diff --git a/src/components/load3d/Load3DScene.test.ts b/src/components/load3d/Load3DScene.test.ts
new file mode 100644
index 0000000000..a45c9d3fe0
--- /dev/null
+++ b/src/components/load3d/Load3DScene.test.ts
@@ -0,0 +1,153 @@
+import { render, screen } from '@testing-library/vue'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import type { Ref } from 'vue'
+import { ref } from 'vue'
+
+import Load3DScene from '@/components/load3d/Load3DScene.vue'
+
+const dragState = vi.hoisted(() => ({
+  isDragging: null as Ref<boolean> | null,
+  dragMessage: null as Ref<string> | null,
+  handleDragOver: vi.fn(),
+  handleDragLeave: vi.fn(),
+  handleDrop: vi.fn(),
+  capturedOptions: null as {
+    onModelDrop?: (file: File) => Promise<void>
+    disabled?: { value?: boolean } | boolean
+  } | null
+}))
+
+vi.mock('@/composables/useLoad3dDrag', () => ({
+  useLoad3dDrag: (options: unknown) => {
+    dragState.capturedOptions = options as typeof dragState.capturedOptions
+    return {
+      isDragging: dragState.isDragging!,
+      dragMessage: dragState.dragMessage!,
+      handleDragOver: dragState.handleDragOver,
+      handleDragLeave: dragState.handleDragLeave,
+      handleDrop: dragState.handleDrop
+    }
+  }
+}))
+
+vi.mock('@/components/common/LoadingOverlay.vue', () => ({
+  default: {
+    name: 'LoadingOverlayStub',
+    props: ['loading', 'loadingMessage'],
+    template: `
+      <div data-testid="loading-overlay">
+        <span v-if="loading">{{ loadingMessage }}</span>
+      </div>
+    `
+  }
+}))
+
+type RenderOpts = {
+  loading?: boolean
+  loadingMessage?: string
+  isPreview?: boolean
+  onModelDrop?: (file: File) => void | Promise<void>
+  initializeLoad3d?: (container: HTMLElement) => Promise<void>
+  cleanup?: () => void
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const initializeLoad3d =
+    opts.initializeLoad3d ?? vi.fn().mockResolvedValue(undefined)
+  const cleanup = opts.cleanup ?? vi.fn()
+
+  const utils = render(Load3DScene, {
+    props: {
+      initializeLoad3d,
+      cleanup,
+      loading: opts.loading ?? false,
+      loadingMessage: opts.loadingMessage ?? '',
+      onModelDrop: opts.onModelDrop,
+      isPreview: opts.isPreview ?? false
+    }
+  })
+
+  return { ...utils, initializeLoad3d, cleanup }
+}
+
+describe('Load3DScene', () => {
+  beforeEach(() => {
+    dragState.isDragging = ref(false)
+    dragState.dragMessage = ref('')
+    dragState.handleDragOver.mockReset()
+    dragState.handleDragLeave.mockReset()
+    dragState.handleDrop.mockReset()
+    dragState.capturedOptions = null
+  })
+
+  it('renders the loading overlay child', () => {
+    renderComponent()
+    expect(screen.getByTestId('loading-overlay')).toBeInTheDocument()
+  })
+
+  it('forwards loading + loadingMessage props to the overlay', () => {
+    renderComponent({ loading: true, loadingMessage: 'Loading model…' })
+
+    expect(screen.getByText('Loading model…')).toBeInTheDocument()
+  })
+
+  it('calls initializeLoad3d with the container element on mount', async () => {
+    const initializeLoad3d = vi.fn().mockResolvedValue(undefined)
+    renderComponent({ initializeLoad3d })
+
+    expect(initializeLoad3d).toHaveBeenCalledOnce()
+    expect(initializeLoad3d.mock.calls[0][0]).toBeInstanceOf(HTMLElement)
+  })
+
+  it('calls cleanup when unmounted', () => {
+    const cleanup = vi.fn()
+    const { unmount } = renderComponent({ cleanup })
+
+    unmount()
+
+    expect(cleanup).toHaveBeenCalledOnce()
+  })
+
+  it('does not render the drag overlay when not dragging', () => {
+    dragState.isDragging!.value = false
+    dragState.dragMessage!.value = 'Drop'
+    renderComponent()
+
+    expect(screen.queryByText('Drop')).not.toBeInTheDocument()
+  })
+
+  it('renders the drag overlay with the drag message while dragging in non-preview mode', () => {
+    dragState.isDragging!.value = true
+    dragState.dragMessage!.value = 'Drop to load model'
+    renderComponent({ isPreview: false })
+
+    expect(screen.getByText('Drop to load model')).toBeInTheDocument()
+  })
+
+  it('hides the drag overlay even while dragging when in preview mode', () => {
+    dragState.isDragging!.value = true
+    dragState.dragMessage!.value = 'Drop to load model'
+    renderComponent({ isPreview: true })
+
+    expect(screen.queryByText('Drop to load model')).not.toBeInTheDocument()
+  })
+
+  it('forwards a dropped file through useLoad3dDrag to the onModelDrop prop', async () => {
+    const onModelDrop = vi.fn()
+    renderComponent({ onModelDrop })
+
+    const file = new File(['m'], 'model.glb')
+    await dragState.capturedOptions!.onModelDrop!(file)
+
+    expect(onModelDrop).toHaveBeenCalledWith(file)
+  })
+
+  it('does not throw when a file is dropped without an onModelDrop handler', async () => {
+    renderComponent({ onModelDrop: undefined })
+
+    const file = new File(['m'], 'model.glb')
+    await expect(
+      dragState.capturedOptions!.onModelDrop!(file)
+    ).resolves.toBeUndefined()
+  })
+})
diff --git a/src/components/load3d/Load3dViewerContent.test.ts b/src/components/load3d/Load3dViewerContent.test.ts
index 9ea2a6402d..b5bf6b5fb9 100644
--- a/src/components/load3d/Load3dViewerContent.test.ts
+++ b/src/components/load3d/Load3dViewerContent.test.ts
@@ -6,6 +6,7 @@ import { createI18n } from 'vue-i18n'
 
 import Load3dViewerContent from '@/components/load3d/Load3dViewerContent.vue'
 import type { LGraphNode } from '@/lib/litegraph/src/LGraphNode'
+import { createMockLGraphNode } from '@/utils/__tests__/litegraphTestUtils'
 
 class NoopMutationObserver {
   observe() {}
@@ -129,7 +130,7 @@ type RenderOptions = {
   dragOverrides?: Partial<ReturnType<typeof buildDragStub>>
 }
 
-const MOCK_NODE = { id: 'node-1', type: 'Load3D' } as unknown as LGraphNode
+const MOCK_NODE = createMockLGraphNode({ id: 'node-1', type: 'Load3D' })
 
 async function renderViewerContent(options: RenderOptions = {}) {
   const viewerStub = buildViewerStub()
diff --git a/src/components/load3d/controls/AnimationControls.test.ts b/src/components/load3d/controls/AnimationControls.test.ts
new file mode 100644
index 0000000000..ae1dbbb9b4
--- /dev/null
+++ b/src/components/load3d/controls/AnimationControls.test.ts
@@ -0,0 +1,205 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import AnimationControls from '@/components/load3d/controls/AnimationControls.vue'
+
+vi.mock('primevue/select', () => ({
+  default: {
+    name: 'Select',
+    props: ['modelValue', 'options', 'optionLabel', 'optionValue'],
+    emits: ['update:modelValue'],
+    template: `
+      <select
+        :value="modelValue"
+        @change="$emit('update:modelValue', isNaN(Number($event.target.value)) ? $event.target.value : Number($event.target.value))"
+      >
+        <option v-for="opt in options" :key="opt[optionValue]" :value="opt[optionValue]">
+          {{ opt[optionLabel] }}
+        </option>
+      </select>
+    `
+  }
+}))
+
+vi.mock('@/components/ui/slider/Slider.vue', () => ({
+  default: {
+    name: 'UiSlider',
+    props: ['modelValue', 'min', 'max', 'step'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="range"
+        role="slider"
+        :value="Array.isArray(modelValue) ? modelValue[0] : modelValue"
+        :min="min"
+        :max="max"
+        :step="step"
+        @input="$emit('update:modelValue', [Number($event.target.value)])"
+      />
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: { en: { g: { playPause: 'Play / pause' } } }
+})
+
+type Animation = { name: string; index: number }
+
+type RenderOpts = {
+  animations?: Animation[]
+  playing?: boolean
+  selectedSpeed?: number
+  selectedAnimation?: number
+  animationProgress?: number
+  animationDuration?: number
+  onSeek?: (progress: number) => void
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const animations = ref<Animation[]>(opts.animations ?? [])
+  const playing = ref<boolean>(opts.playing ?? false)
+  const selectedSpeed = ref<number>(opts.selectedSpeed ?? 1)
+  const selectedAnimation = ref<number>(opts.selectedAnimation ?? 0)
+  const animationProgress = ref<number>(opts.animationProgress ?? 0)
+  const animationDuration = ref<number>(opts.animationDuration ?? 10)
+
+  const utils = render(AnimationControls, {
+    props: {
+      animations: animations.value,
+      'onUpdate:animations': (v: Animation[] | undefined) => {
+        if (v) animations.value = v
+      },
+      playing: playing.value,
+      'onUpdate:playing': (v: boolean | undefined) => {
+        if (v !== undefined) playing.value = v
+      },
+      selectedSpeed: selectedSpeed.value,
+      'onUpdate:selectedSpeed': (v: number | undefined) => {
+        if (v !== undefined) selectedSpeed.value = v
+      },
+      selectedAnimation: selectedAnimation.value,
+      'onUpdate:selectedAnimation': (v: number | undefined) => {
+        if (v !== undefined) selectedAnimation.value = v
+      },
+      animationProgress: animationProgress.value,
+      'onUpdate:animationProgress': (v: number | undefined) => {
+        if (v !== undefined) animationProgress.value = v
+      },
+      animationDuration: animationDuration.value,
+      'onUpdate:animationDuration': (v: number | undefined) => {
+        if (v !== undefined) animationDuration.value = v
+      },
+      onSeek: opts.onSeek
+    },
+    global: { plugins: [i18n] }
+  })
+
+  return {
+    ...utils,
+    animations,
+    playing,
+    selectedSpeed,
+    selectedAnimation,
+    animationProgress,
+    user: userEvent.setup()
+  }
+}
+
+describe('AnimationControls', () => {
+  it('renders nothing when the animation list is empty', () => {
+    renderComponent({ animations: [] })
+
+    expect(
+      screen.queryByRole('button', { name: 'Play / pause' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('renders the play / speed / track / progress widgets when animations are present', () => {
+    renderComponent({
+      animations: [
+        { name: 'idle', index: 0 },
+        { name: 'walk', index: 1 }
+      ]
+    })
+
+    expect(
+      screen.getByRole('button', { name: 'Play / pause' })
+    ).toBeInTheDocument()
+    expect(screen.getAllByRole('combobox')).toHaveLength(2)
+    expect(screen.getByRole('slider')).toBeInTheDocument()
+  })
+
+  it('flips playing to true via v-model when starting from a paused state', async () => {
+    const { user, playing } = renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      playing: false
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Play / pause' }))
+
+    expect(playing.value).toBe(true)
+  })
+
+  it('flips playing to false via v-model when starting from a playing state', async () => {
+    const { user, playing } = renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      playing: true
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Play / pause' }))
+
+    expect(playing.value).toBe(false)
+  })
+
+  it('updates animationProgress and emits seek with the new progress when the slider moves', () => {
+    const onSeek = vi.fn()
+    const { animationProgress } = renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      animationProgress: 0,
+      onSeek
+    })
+
+    const slider = screen.getByRole('slider') as HTMLInputElement
+    slider.value = '37.5'
+    slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+    expect(animationProgress.value).toBe(37.5)
+    expect(onSeek).toHaveBeenCalledWith(37.5)
+  })
+
+  it('formats the time display under one minute as Ns', () => {
+    renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      animationDuration: 30,
+      animationProgress: 50 // half of 30s = 15s
+    })
+
+    expect(screen.getByText('15.0s / 30.0s')).toBeInTheDocument()
+  })
+
+  it('formats the time display over one minute as M:SS.S', () => {
+    renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      animationDuration: 90,
+      animationProgress: 50 // half of 90s = 45s, total 1:30.0
+    })
+
+    expect(screen.getByText('45.0s / 1:30.0')).toBeInTheDocument()
+  })
+
+  it('shows 0s for currentTime when animationDuration is 0', () => {
+    renderComponent({
+      animations: [{ name: 'idle', index: 0 }],
+      animationDuration: 0,
+      animationProgress: 50
+    })
+
+    expect(screen.getByText('0.0s / 0.0s')).toBeInTheDocument()
+  })
+})
diff --git a/src/components/load3d/controls/CameraControls.test.ts b/src/components/load3d/controls/CameraControls.test.ts
new file mode 100644
index 0000000000..964663f6e0
--- /dev/null
+++ b/src/components/load3d/controls/CameraControls.test.ts
@@ -0,0 +1,84 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import CameraControls from '@/components/load3d/controls/CameraControls.vue'
+import type { CameraType } from '@/extensions/core/load3d/interfaces'
+
+vi.mock('@/components/load3d/controls/PopupSlider.vue', () => ({
+  default: {
+    name: 'PopupSlider',
+    props: ['tooltipText', 'modelValue'],
+    template: '<div data-testid="popup-slider">{{ tooltipText }}</div>'
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: { load3d: { switchCamera: 'Switch camera', fov: 'FOV' } }
+  }
+})
+
+function renderComponent(initial: { type?: CameraType; fov?: number } = {}) {
+  const cameraType = ref<CameraType>(initial.type ?? 'perspective')
+  const fov = ref<number>(initial.fov ?? 75)
+
+  const utils = render(CameraControls, {
+    props: {
+      cameraType: cameraType.value,
+      'onUpdate:cameraType': (v: CameraType | undefined) => {
+        if (v) cameraType.value = v
+      },
+      fov: fov.value,
+      'onUpdate:fov': (v: number | undefined) => {
+        if (v !== undefined) fov.value = v
+      }
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return { ...utils, cameraType, fov, user: userEvent.setup() }
+}
+
+describe('CameraControls', () => {
+  it('renders the switch-camera button', () => {
+    renderComponent()
+
+    expect(
+      screen.getByRole('button', { name: 'Switch camera' })
+    ).toBeInTheDocument()
+  })
+
+  it('shows the FOV PopupSlider only for the perspective camera', () => {
+    renderComponent({ type: 'perspective' })
+    expect(screen.getByTestId('popup-slider')).toBeInTheDocument()
+  })
+
+  it('hides the FOV PopupSlider for the orthographic camera', () => {
+    renderComponent({ type: 'orthographic' })
+    expect(screen.queryByTestId('popup-slider')).not.toBeInTheDocument()
+  })
+
+  it('toggles cameraType from perspective to orthographic when the button is clicked', async () => {
+    const { user, cameraType } = renderComponent({ type: 'perspective' })
+
+    await user.click(screen.getByRole('button', { name: 'Switch camera' }))
+
+    expect(cameraType.value).toBe('orthographic')
+  })
+
+  it('toggles cameraType from orthographic to perspective when the button is clicked', async () => {
+    const { user, cameraType } = renderComponent({ type: 'orthographic' })
+
+    await user.click(screen.getByRole('button', { name: 'Switch camera' }))
+
+    expect(cameraType.value).toBe('perspective')
+  })
+})
diff --git a/src/components/load3d/controls/ExportControls.test.ts b/src/components/load3d/controls/ExportControls.test.ts
new file mode 100644
index 0000000000..b1296a09e4
--- /dev/null
+++ b/src/components/load3d/controls/ExportControls.test.ts
@@ -0,0 +1,78 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { createI18n } from 'vue-i18n'
+
+import ExportControls from '@/components/load3d/controls/ExportControls.vue'
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: { load3d: { exportModel: 'Export model' } }
+  }
+})
+
+function renderComponent(onExportModel?: (format: string) => void) {
+  const utils = render(ExportControls, {
+    props: { onExportModel },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+  return { ...utils, user: userEvent.setup() }
+}
+
+describe('ExportControls', () => {
+  afterEach(() => {
+    document.body.innerHTML = ''
+  })
+
+  it('renders the trigger button without exposing the format list initially', () => {
+    renderComponent()
+
+    expect(
+      screen.getByRole('button', { name: 'Export model' })
+    ).toBeInTheDocument()
+    expect(
+      screen.queryByRole('button', { name: 'GLB' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('reveals all three export format buttons when the trigger is clicked', async () => {
+    const { user } = renderComponent()
+
+    await user.click(screen.getByRole('button', { name: 'Export model' }))
+
+    for (const label of ['GLB', 'OBJ', 'STL']) {
+      expect(screen.getByRole('button', { name: label })).toBeVisible()
+    }
+  })
+
+  it('emits exportModel with the chosen format and hides the popup', async () => {
+    const onExportModel = vi.fn()
+    const { user } = renderComponent(onExportModel)
+
+    await user.click(screen.getByRole('button', { name: 'Export model' }))
+    await user.click(screen.getByRole('button', { name: 'OBJ' }))
+
+    expect(onExportModel).toHaveBeenCalledWith('obj')
+    expect(
+      screen.queryByRole('button', { name: 'GLB' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('hides the popup when a click happens outside the trigger', async () => {
+    const { user } = renderComponent()
+
+    await user.click(screen.getByRole('button', { name: 'Export model' }))
+    expect(screen.getByRole('button', { name: 'GLB' })).toBeVisible()
+
+    await user.click(document.body)
+
+    expect(
+      screen.queryByRole('button', { name: 'GLB' })
+    ).not.toBeInTheDocument()
+  })
+})
diff --git a/src/components/load3d/controls/HDRIControls.test.ts b/src/components/load3d/controls/HDRIControls.test.ts
new file mode 100644
index 0000000000..1729b0ceb4
--- /dev/null
+++ b/src/components/load3d/controls/HDRIControls.test.ts
@@ -0,0 +1,197 @@
+/* eslint-disable testing-library/no-container, testing-library/no-node-access -- hidden file input has no role/label, queried by selector */
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import HDRIControls from '@/components/load3d/controls/HDRIControls.vue'
+import type { HDRIConfig } from '@/extensions/core/load3d/interfaces'
+
+const addAlert = vi.fn()
+vi.mock('@/platform/updates/common/toastStore', () => ({
+  useToastStore: () => ({ addAlert })
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        hdri: {
+          label: 'HDRI',
+          uploadFile: 'Upload HDRI',
+          changeFile: 'Change HDRI',
+          showAsBackground: 'Show as background',
+          removeFile: 'Remove HDRI'
+        }
+      },
+      toastMessages: { unsupportedHDRIFormat: 'Unsupported HDRI format' }
+    }
+  }
+})
+
+const defaultConfig: HDRIConfig = {
+  enabled: false,
+  hdriPath: '',
+  showAsBackground: false,
+  intensity: 1
+}
+
+type RenderOpts = {
+  config?: HDRIConfig
+  hasBackgroundImage?: boolean
+  onUpdateHdriFile?: (file: File | null) => void
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const config = ref<HDRIConfig>(opts.config ?? { ...defaultConfig })
+
+  const utils = render(HDRIControls, {
+    props: {
+      hdriConfig: config.value,
+      'onUpdate:hdriConfig': (v: HDRIConfig | undefined) => {
+        if (v) config.value = v
+      },
+      hasBackgroundImage: opts.hasBackgroundImage ?? false,
+      onUpdateHdriFile: opts.onUpdateHdriFile
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return { ...utils, config, user: userEvent.setup() }
+}
+
+describe('HDRIControls', () => {
+  beforeEach(() => {
+    addAlert.mockClear()
+  })
+
+  afterEach(() => {
+    document.body.innerHTML = ''
+  })
+
+  describe('initial render', () => {
+    it('renders the upload button when no HDRI is loaded', () => {
+      renderComponent()
+
+      expect(
+        screen.getByRole('button', { name: 'Upload HDRI' })
+      ).toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: 'HDRI' })
+      ).not.toBeInTheDocument()
+    })
+
+    it('renders the change / toggle / show-as-bg / remove buttons when an HDRI is loaded', () => {
+      renderComponent({
+        config: { ...defaultConfig, hdriPath: '/api/hdri/test.hdr' }
+      })
+
+      expect(
+        screen.getByRole('button', { name: 'Change HDRI' })
+      ).toBeInTheDocument()
+      expect(screen.getByRole('button', { name: 'HDRI' })).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: 'Show as background' })
+      ).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: 'Remove HDRI' })
+      ).toBeInTheDocument()
+    })
+
+    it('hides the entire control when a background image is set and no HDRI is loaded', () => {
+      const { container } = renderComponent({
+        hasBackgroundImage: true,
+        config: { ...defaultConfig, hdriPath: '' }
+      })
+
+      expect(container.querySelector('button')).toBeNull()
+    })
+
+    it('still renders when a background image is set but an HDRI is loaded', () => {
+      renderComponent({
+        hasBackgroundImage: true,
+        config: { ...defaultConfig, hdriPath: '/api/hdri/test.hdr' }
+      })
+
+      expect(
+        screen.getByRole('button', { name: 'Change HDRI' })
+      ).toBeInTheDocument()
+    })
+  })
+
+  describe('toggle buttons', () => {
+    it('flips enabled in the v-model when the HDRI button is clicked', async () => {
+      const { user, config } = renderComponent({
+        config: { ...defaultConfig, hdriPath: '/api/hdri/test.hdr' }
+      })
+
+      await user.click(screen.getByRole('button', { name: 'HDRI' }))
+
+      expect(config.value.enabled).toBe(true)
+    })
+
+    it('flips showAsBackground in the v-model when the show-as-background button is clicked', async () => {
+      const { user, config } = renderComponent({
+        config: { ...defaultConfig, hdriPath: '/api/hdri/test.hdr' }
+      })
+
+      await user.click(
+        screen.getByRole('button', { name: 'Show as background' })
+      )
+
+      expect(config.value.showAsBackground).toBe(true)
+    })
+  })
+
+  describe('file events', () => {
+    it('emits updateHdriFile(null) when the remove button is clicked', async () => {
+      const onUpdateHdriFile = vi.fn()
+      const { user } = renderComponent({
+        config: { ...defaultConfig, hdriPath: '/api/hdri/test.hdr' },
+        onUpdateHdriFile
+      })
+
+      await user.click(screen.getByRole('button', { name: 'Remove HDRI' }))
+
+      expect(onUpdateHdriFile).toHaveBeenCalledWith(null)
+    })
+
+    it('emits updateHdriFile with the picked file when its extension is supported', async () => {
+      const onUpdateHdriFile = vi.fn()
+      const { container } = renderComponent({ onUpdateHdriFile })
+
+      const fileInput = container.querySelector(
+        'input[type="file"]'
+      ) as HTMLInputElement
+      const file = new File(['hdri-data'], 'sky.hdr', {
+        type: 'application/octet-stream'
+      })
+      Object.defineProperty(fileInput, 'files', { value: [file] })
+      fileInput.dispatchEvent(new Event('change'))
+
+      expect(onUpdateHdriFile).toHaveBeenCalledWith(file)
+      expect(addAlert).not.toHaveBeenCalled()
+    })
+
+    it('rejects unsupported file extensions with a toast and no emit', async () => {
+      const onUpdateHdriFile = vi.fn()
+      const { container } = renderComponent({ onUpdateHdriFile })
+
+      const fileInput = container.querySelector(
+        'input[type="file"]'
+      ) as HTMLInputElement
+      const file = new File(['data'], 'photo.jpg', { type: 'image/jpeg' })
+      Object.defineProperty(fileInput, 'files', { value: [file] })
+      fileInput.dispatchEvent(new Event('change'))
+
+      expect(onUpdateHdriFile).not.toHaveBeenCalled()
+      expect(addAlert).toHaveBeenCalledWith('Unsupported HDRI format')
+    })
+  })
+})
diff --git a/src/components/load3d/controls/LightControls.test.ts b/src/components/load3d/controls/LightControls.test.ts
new file mode 100644
index 0000000000..bf1368656b
--- /dev/null
+++ b/src/components/load3d/controls/LightControls.test.ts
@@ -0,0 +1,193 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import LightControls from '@/components/load3d/controls/LightControls.vue'
+import type {
+  HDRIConfig,
+  MaterialMode
+} from '@/extensions/core/load3d/interfaces'
+
+const settingValues: Record<string, unknown> = {
+  'Comfy.Load3D.LightIntensityMaximum': 10,
+  'Comfy.Load3D.LightIntensityMinimum': 1,
+  'Comfy.Load3D.LightAdjustmentIncrement': 0.5
+}
+
+vi.mock('@/platform/settings/settingStore', () => ({
+  useSettingStore: () => ({
+    get: (key: string) => settingValues[key]
+  })
+}))
+
+vi.mock('@/composables/useDismissableOverlay', () => ({
+  useDismissableOverlay: vi.fn()
+}))
+
+vi.mock('@/components/ui/slider/Slider.vue', () => ({
+  default: {
+    name: 'UiSlider',
+    props: ['modelValue', 'min', 'max', 'step'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="range"
+        role="slider"
+        :value="Array.isArray(modelValue) ? modelValue[0] : modelValue"
+        :min="min"
+        :max="max"
+        :step="step"
+        @input="$emit('update:modelValue', [Number($event.target.value)])"
+      />
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: { en: { load3d: { lightIntensity: 'Light intensity' } } }
+})
+
+type RenderOpts = {
+  lightIntensity?: number
+  materialMode?: MaterialMode
+  hdriConfig?: HDRIConfig
+  embedded?: boolean
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const lightIntensity = ref<number>(opts.lightIntensity ?? 5)
+  const materialMode = ref<MaterialMode>(opts.materialMode ?? 'original')
+  const hdriConfig = ref<HDRIConfig | undefined>(opts.hdriConfig)
+
+  const utils = render(LightControls, {
+    props: {
+      lightIntensity: lightIntensity.value,
+      'onUpdate:lightIntensity': (v: number | undefined) => {
+        if (v !== undefined) lightIntensity.value = v
+      },
+      materialMode: materialMode.value,
+      'onUpdate:materialMode': (v: MaterialMode | undefined) => {
+        if (v) materialMode.value = v
+      },
+      hdriConfig: hdriConfig.value,
+      'onUpdate:hdriConfig': (v: HDRIConfig | undefined) => {
+        hdriConfig.value = v
+      },
+      embedded: opts.embedded ?? false
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return {
+    ...utils,
+    lightIntensity,
+    hdriConfig,
+    user: userEvent.setup()
+  }
+}
+
+describe('LightControls', () => {
+  afterEach(() => {
+    document.body.innerHTML = ''
+  })
+
+  describe('material mode gating', () => {
+    it('renders the intensity control when materialMode is original', () => {
+      renderComponent({ materialMode: 'original' })
+
+      expect(
+        screen.getByRole('button', { name: 'Light intensity' })
+      ).toBeInTheDocument()
+    })
+
+    it.each(['normal', 'wireframe'] as const)(
+      'hides the intensity control when materialMode is %s',
+      (mode) => {
+        renderComponent({ materialMode: mode })
+
+        expect(
+          screen.queryByRole('button', { name: 'Light intensity' })
+        ).not.toBeInTheDocument()
+      }
+    )
+  })
+
+  describe('default (non-HDRI) mode', () => {
+    it('feeds the slider with the setting-store min / max / step', async () => {
+      const { user } = renderComponent({ lightIntensity: 5 })
+      await user.click(screen.getByRole('button', { name: 'Light intensity' }))
+
+      const slider = screen.getByRole('slider') as HTMLInputElement
+      expect(slider.min).toBe('1')
+      expect(slider.max).toBe('10')
+      expect(slider.step).toBe('0.5')
+    })
+
+    it('updates lightIntensity v-model when the slider changes', async () => {
+      const { user, lightIntensity } = renderComponent({ lightIntensity: 5 })
+      await user.click(screen.getByRole('button', { name: 'Light intensity' }))
+
+      const slider = screen.getByRole('slider') as HTMLInputElement
+      slider.value = '7.5'
+      slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+      expect(lightIntensity.value).toBe(7.5)
+    })
+  })
+
+  describe('HDRI active mode', () => {
+    const hdriConfig: HDRIConfig = {
+      enabled: true,
+      hdriPath: '/api/hdri/test.hdr',
+      showAsBackground: false,
+      intensity: 2
+    }
+
+    it('reads the slider min / max / step from the HDRI range (0..5 step 0.1)', async () => {
+      const { user } = renderComponent({ hdriConfig })
+      await user.click(screen.getByRole('button', { name: 'Light intensity' }))
+
+      const slider = screen.getByRole('slider') as HTMLInputElement
+      expect(slider.min).toBe('0')
+      expect(slider.max).toBe('5')
+      expect(slider.step).toBe('0.1')
+    })
+
+    it('writes back to hdriConfig.intensity instead of lightIntensity when the slider changes', async () => {
+      const {
+        user,
+        lightIntensity,
+        hdriConfig: cfg
+      } = renderComponent({
+        lightIntensity: 5,
+        hdriConfig
+      })
+      await user.click(screen.getByRole('button', { name: 'Light intensity' }))
+
+      const slider = screen.getByRole('slider') as HTMLInputElement
+      slider.value = '3.5'
+      slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+      expect(cfg.value?.intensity).toBe(3.5)
+      expect(lightIntensity.value).toBe(5) // unchanged
+    })
+  })
+
+  describe('embedded mode', () => {
+    it('renders the slider inline without the trigger button when embedded is true', () => {
+      renderComponent({ embedded: true })
+
+      expect(
+        screen.queryByRole('button', { name: 'Light intensity' })
+      ).not.toBeInTheDocument()
+      expect(screen.getByRole('slider')).toBeInTheDocument()
+    })
+  })
+})
diff --git a/src/components/load3d/controls/ModelControls.test.ts b/src/components/load3d/controls/ModelControls.test.ts
new file mode 100644
index 0000000000..2ee0336fd5
--- /dev/null
+++ b/src/components/load3d/controls/ModelControls.test.ts
@@ -0,0 +1,185 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import ModelControls from '@/components/load3d/controls/ModelControls.vue'
+import type {
+  MaterialMode,
+  UpDirection
+} from '@/extensions/core/load3d/interfaces'
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        upDirection: 'Up direction',
+        materialMode: 'Material mode',
+        showSkeleton: 'Show skeleton',
+        materialModes: {
+          original: 'Original',
+          normal: 'Normal',
+          wireframe: 'Wireframe',
+          pointCloud: 'Point cloud',
+          depth: 'Depth'
+        }
+      }
+    }
+  }
+})
+
+type RenderOpts = {
+  upDirection?: UpDirection
+  materialMode?: MaterialMode
+  showSkeleton?: boolean
+  materialModes?: readonly MaterialMode[]
+  hasSkeleton?: boolean
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const upDirection = ref<UpDirection>(opts.upDirection ?? 'original')
+  const materialMode = ref<MaterialMode>(opts.materialMode ?? 'original')
+  const showSkeleton = ref<boolean>(opts.showSkeleton ?? false)
+
+  const utils = render(ModelControls, {
+    props: {
+      upDirection: upDirection.value,
+      'onUpdate:upDirection': (v: UpDirection | undefined) => {
+        if (v) upDirection.value = v
+      },
+      materialMode: materialMode.value,
+      'onUpdate:materialMode': (v: MaterialMode | undefined) => {
+        if (v) materialMode.value = v
+      },
+      showSkeleton: showSkeleton.value,
+      'onUpdate:showSkeleton': (v: boolean | undefined) => {
+        if (v !== undefined) showSkeleton.value = v
+      },
+      materialModes: opts.materialModes ?? ['original', 'normal', 'wireframe'],
+      hasSkeleton: opts.hasSkeleton ?? false
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return {
+    ...utils,
+    upDirection,
+    materialMode,
+    showSkeleton,
+    user: userEvent.setup()
+  }
+}
+
+describe('ModelControls', () => {
+  afterEach(() => {
+    document.body.innerHTML = ''
+  })
+
+  describe('up direction', () => {
+    it('renders the up-direction trigger and opens the popup with all 7 directions', async () => {
+      const { user } = renderComponent()
+      await user.click(screen.getByRole('button', { name: 'Up direction' }))
+
+      for (const label of ['ORIGINAL', '-X', '+X', '-Y', '+Y', '-Z', '+Z']) {
+        expect(screen.getByRole('button', { name: label })).toBeVisible()
+      }
+    })
+
+    it('updates upDirection v-model when a direction is selected', async () => {
+      const { user, upDirection } = renderComponent()
+      await user.click(screen.getByRole('button', { name: 'Up direction' }))
+      await user.click(screen.getByRole('button', { name: '+X' }))
+
+      expect(upDirection.value).toBe('+x')
+    })
+  })
+
+  describe('material mode', () => {
+    it('renders the material-mode trigger when materialModes is non-empty', () => {
+      renderComponent({ materialModes: ['original', 'normal'] })
+
+      expect(
+        screen.getByRole('button', { name: 'Material mode' })
+      ).toBeInTheDocument()
+    })
+
+    it('hides the material-mode trigger when materialModes is empty', () => {
+      renderComponent({ materialModes: [] })
+
+      expect(
+        screen.queryByRole('button', { name: 'Material mode' })
+      ).not.toBeInTheDocument()
+    })
+
+    it('renders one popup option per entry in materialModes', async () => {
+      const { user } = renderComponent({
+        materialModes: ['original', 'pointCloud', 'normal', 'wireframe']
+      })
+      await user.click(screen.getByRole('button', { name: 'Material mode' }))
+
+      expect(screen.getByRole('button', { name: 'Original' })).toBeVisible()
+      expect(screen.getByRole('button', { name: 'Point cloud' })).toBeVisible()
+      expect(screen.getByRole('button', { name: 'Normal' })).toBeVisible()
+      expect(screen.getByRole('button', { name: 'Wireframe' })).toBeVisible()
+    })
+
+    it('updates materialMode v-model when a mode is selected', async () => {
+      const { user, materialMode } = renderComponent({
+        materialModes: ['original', 'normal']
+      })
+      await user.click(screen.getByRole('button', { name: 'Material mode' }))
+      await user.click(screen.getByRole('button', { name: 'Normal' }))
+
+      expect(materialMode.value).toBe('normal')
+    })
+  })
+
+  describe('skeleton', () => {
+    it('hides the skeleton button when hasSkeleton is false', () => {
+      renderComponent({ hasSkeleton: false })
+
+      expect(
+        screen.queryByRole('button', { name: 'Show skeleton' })
+      ).not.toBeInTheDocument()
+    })
+
+    it('renders the skeleton button when hasSkeleton is true', () => {
+      renderComponent({ hasSkeleton: true })
+
+      expect(
+        screen.getByRole('button', { name: 'Show skeleton' })
+      ).toBeInTheDocument()
+    })
+
+    it('flips showSkeleton v-model when the skeleton button is clicked', async () => {
+      const { user, showSkeleton } = renderComponent({
+        hasSkeleton: true,
+        showSkeleton: false
+      })
+      await user.click(screen.getByRole('button', { name: 'Show skeleton' }))
+
+      expect(showSkeleton.value).toBe(true)
+    })
+  })
+
+  describe('popup mutual exclusion', () => {
+    it('closes the up-direction popup when the material-mode trigger is clicked', async () => {
+      const { user } = renderComponent()
+
+      await user.click(screen.getByRole('button', { name: 'Up direction' }))
+      expect(screen.getByRole('button', { name: 'ORIGINAL' })).toBeVisible()
+
+      await user.click(screen.getByRole('button', { name: 'Material mode' }))
+
+      expect(
+        screen.queryByRole('button', { name: 'ORIGINAL' })
+      ).not.toBeInTheDocument()
+    })
+  })
+})
diff --git a/src/components/load3d/controls/PopupSlider.test.ts b/src/components/load3d/controls/PopupSlider.test.ts
new file mode 100644
index 0000000000..560895d33a
--- /dev/null
+++ b/src/components/load3d/controls/PopupSlider.test.ts
@@ -0,0 +1,126 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+
+import PopupSlider from '@/components/load3d/controls/PopupSlider.vue'
+
+vi.mock('primevue/slider', () => ({
+  default: {
+    name: 'Slider',
+    props: ['modelValue', 'min', 'max', 'step'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="range"
+        role="slider"
+        :value="modelValue"
+        :min="min"
+        :max="max"
+        :step="step"
+        @input="$emit('update:modelValue', Number($event.target.value))"
+      />
+    `
+  }
+}))
+
+function renderComponent(
+  props: {
+    tooltipText?: string
+    icon?: string
+    min?: number
+    max?: number
+    step?: number
+    initial?: number
+  } = {}
+) {
+  const value = ref<number>(props.initial ?? 50)
+  const utils = render(PopupSlider, {
+    props: {
+      tooltipText: props.tooltipText ?? 'FOV',
+      icon: props.icon,
+      min: props.min,
+      max: props.max,
+      step: props.step,
+      modelValue: value.value,
+      'onUpdate:modelValue': (v: number | undefined) => {
+        if (v !== undefined) value.value = v
+      }
+    },
+    global: {
+      directives: { tooltip: () => {} }
+    }
+  })
+  return { ...utils, value, user: userEvent.setup() }
+}
+
+describe('PopupSlider', () => {
+  afterEach(() => {
+    document.body.innerHTML = ''
+  })
+
+  it('keeps the slider hidden from the accessibility tree until the trigger is clicked', () => {
+    renderComponent({ tooltipText: 'FOV' })
+
+    expect(screen.queryByRole('slider')).not.toBeInTheDocument()
+  })
+
+  it('reveals the slider when the trigger is clicked and hides it again on a second click', async () => {
+    const { user } = renderComponent({ tooltipText: 'FOV' })
+
+    await user.click(screen.getByRole('button', { name: 'FOV' }))
+    expect(screen.getByRole('slider')).toBeVisible()
+
+    await user.click(screen.getByRole('button', { name: 'FOV' }))
+    expect(screen.queryByRole('slider')).not.toBeInTheDocument()
+  })
+
+  it('hides the slider when the user clicks outside the popup', async () => {
+    const { user } = renderComponent({ tooltipText: 'FOV' })
+
+    await user.click(screen.getByRole('button', { name: 'FOV' }))
+    expect(screen.getByRole('slider')).toBeVisible()
+
+    await user.click(document.body)
+    expect(screen.queryByRole('slider')).not.toBeInTheDocument()
+  })
+
+  it('forwards default min / max / step (10 / 150 / 1) when none are provided', async () => {
+    const { user } = renderComponent({ tooltipText: 'FOV' })
+    await user.click(screen.getByRole('button', { name: 'FOV' }))
+    const slider = screen.getByRole('slider') as HTMLInputElement
+
+    expect(slider.min).toBe('10')
+    expect(slider.max).toBe('150')
+    expect(slider.step).toBe('1')
+  })
+
+  it('uses caller-provided min / max / step over the defaults', async () => {
+    const { user } = renderComponent({
+      tooltipText: 'Light',
+      min: 0,
+      max: 5,
+      step: 0.25
+    })
+    await user.click(screen.getByRole('button', { name: 'Light' }))
+    const slider = screen.getByRole('slider') as HTMLInputElement
+
+    expect(slider.min).toBe('0')
+    expect(slider.max).toBe('5')
+    expect(slider.step).toBe('0.25')
+  })
+
+  it('updates the v-model when the slider value changes', async () => {
+    const { user, value } = renderComponent({
+      tooltipText: 'FOV',
+      initial: 50
+    })
+    await user.click(screen.getByRole('button', { name: 'FOV' }))
+    const slider = screen.getByRole('slider') as HTMLInputElement
+
+    slider.value = '120'
+    slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+    expect(value.value).toBe(120)
+  })
+})
diff --git a/src/components/load3d/controls/RecordingControls.test.ts b/src/components/load3d/controls/RecordingControls.test.ts
new file mode 100644
index 0000000000..4d93ac1ccc
--- /dev/null
+++ b/src/components/load3d/controls/RecordingControls.test.ts
@@ -0,0 +1,205 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import RecordingControls from '@/components/load3d/controls/RecordingControls.vue'
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        startRecording: 'Start recording',
+        stopRecording: 'Stop recording',
+        exportRecording: 'Export recording',
+        clearRecording: 'Clear recording'
+      }
+    }
+  }
+})
+
+type RenderOpts = {
+  hasRecording?: boolean
+  isRecording?: boolean
+  recordingDuration?: number
+  onStartRecording?: () => void
+  onStopRecording?: () => void
+  onExportRecording?: () => void
+  onClearRecording?: () => void
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const hasRecording = ref<boolean>(opts.hasRecording ?? false)
+  const isRecording = ref<boolean>(opts.isRecording ?? false)
+  const recordingDuration = ref<number>(opts.recordingDuration ?? 0)
+
+  const utils = render(RecordingControls, {
+    props: {
+      hasRecording: hasRecording.value,
+      'onUpdate:hasRecording': (v: boolean | undefined) => {
+        if (v !== undefined) hasRecording.value = v
+      },
+      isRecording: isRecording.value,
+      'onUpdate:isRecording': (v: boolean | undefined) => {
+        if (v !== undefined) isRecording.value = v
+      },
+      recordingDuration: recordingDuration.value,
+      'onUpdate:recordingDuration': (v: number | undefined) => {
+        if (v !== undefined) recordingDuration.value = v
+      },
+      onStartRecording: opts.onStartRecording,
+      onStopRecording: opts.onStopRecording,
+      onExportRecording: opts.onExportRecording,
+      onClearRecording: opts.onClearRecording
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return { ...utils, user: userEvent.setup() }
+}
+
+describe('RecordingControls', () => {
+  it('shows the start-recording button initially', () => {
+    renderComponent()
+
+    expect(
+      screen.getByRole('button', { name: 'Start recording' })
+    ).toBeInTheDocument()
+    expect(
+      screen.queryByRole('button', { name: 'Stop recording' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('shows the stop-recording button while recording is in progress', () => {
+    renderComponent({ isRecording: true })
+
+    expect(
+      screen.getByRole('button', { name: 'Stop recording' })
+    ).toBeInTheDocument()
+    expect(
+      screen.queryByRole('button', { name: 'Start recording' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('emits startRecording when the button is clicked from a stopped state', async () => {
+    const onStartRecording = vi.fn()
+    const onStopRecording = vi.fn()
+    const { user } = renderComponent({
+      isRecording: false,
+      onStartRecording,
+      onStopRecording
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Start recording' }))
+
+    expect(onStartRecording).toHaveBeenCalledOnce()
+    expect(onStopRecording).not.toHaveBeenCalled()
+  })
+
+  it('emits stopRecording when the button is clicked from a recording state', async () => {
+    const onStartRecording = vi.fn()
+    const onStopRecording = vi.fn()
+    const { user } = renderComponent({
+      isRecording: true,
+      onStartRecording,
+      onStopRecording
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Stop recording' }))
+
+    expect(onStopRecording).toHaveBeenCalledOnce()
+    expect(onStartRecording).not.toHaveBeenCalled()
+  })
+
+  it('hides the export and clear buttons when there is no recording', () => {
+    renderComponent({ hasRecording: false, isRecording: false })
+
+    expect(
+      screen.queryByRole('button', { name: 'Export recording' })
+    ).not.toBeInTheDocument()
+    expect(
+      screen.queryByRole('button', { name: 'Clear recording' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('shows the export and clear buttons once a recording exists', () => {
+    renderComponent({ hasRecording: true, isRecording: false })
+
+    expect(
+      screen.getByRole('button', { name: 'Export recording' })
+    ).toBeInTheDocument()
+    expect(
+      screen.getByRole('button', { name: 'Clear recording' })
+    ).toBeInTheDocument()
+  })
+
+  it('hides the export and clear buttons during a new recording even if a previous one exists', () => {
+    renderComponent({ hasRecording: true, isRecording: true })
+
+    expect(
+      screen.queryByRole('button', { name: 'Export recording' })
+    ).not.toBeInTheDocument()
+    expect(
+      screen.queryByRole('button', { name: 'Clear recording' })
+    ).not.toBeInTheDocument()
+  })
+
+  it('emits exportRecording and clearRecording from their respective buttons', async () => {
+    const onExportRecording = vi.fn()
+    const onClearRecording = vi.fn()
+    const { user } = renderComponent({
+      hasRecording: true,
+      isRecording: false,
+      onExportRecording,
+      onClearRecording
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Export recording' }))
+    await user.click(screen.getByRole('button', { name: 'Clear recording' }))
+
+    expect(onExportRecording).toHaveBeenCalledOnce()
+    expect(onClearRecording).toHaveBeenCalledOnce()
+  })
+
+  it('renders the formatted duration as MM:SS once a recording exists', () => {
+    renderComponent({
+      hasRecording: true,
+      isRecording: false,
+      recordingDuration: 75
+    })
+
+    expect(screen.getByTestId('load3d-recording-duration')).toHaveTextContent(
+      '01:15'
+    )
+  })
+
+  it('hides the duration display while a recording is in progress', () => {
+    renderComponent({
+      hasRecording: true,
+      isRecording: true,
+      recordingDuration: 30
+    })
+
+    expect(
+      screen.queryByTestId('load3d-recording-duration')
+    ).not.toBeInTheDocument()
+  })
+
+  it('hides the duration display when recordingDuration is zero', () => {
+    renderComponent({
+      hasRecording: true,
+      isRecording: false,
+      recordingDuration: 0
+    })
+
+    expect(
+      screen.queryByTestId('load3d-recording-duration')
+    ).not.toBeInTheDocument()
+  })
+})
diff --git a/src/components/load3d/controls/SceneControls.test.ts b/src/components/load3d/controls/SceneControls.test.ts
new file mode 100644
index 0000000000..7de6f008f9
--- /dev/null
+++ b/src/components/load3d/controls/SceneControls.test.ts
@@ -0,0 +1,231 @@
+/* eslint-disable testing-library/no-container, testing-library/no-node-access -- hidden color/file inputs have no role/label, queried by selector */
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import SceneControls from '@/components/load3d/controls/SceneControls.vue'
+
+vi.mock('@/components/load3d/controls/PopupSlider.vue', () => ({
+  default: {
+    name: 'PopupSliderStub',
+    props: ['tooltipText', 'modelValue'],
+    template: '<div data-testid="fov-popup-slider">{{ tooltipText }}</div>'
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        showGrid: 'Show grid',
+        backgroundColor: 'Background color',
+        uploadBackgroundImage: 'Upload background image',
+        panoramaMode: 'Panorama mode',
+        removeBackgroundImage: 'Remove background image',
+        fov: 'FOV'
+      }
+    }
+  }
+})
+
+type RenderOpts = {
+  showGrid?: boolean
+  backgroundColor?: string
+  backgroundImage?: string
+  backgroundRenderMode?: 'tiled' | 'panorama'
+  fov?: number
+  hdriActive?: boolean
+  onUpdateBackgroundImage?: (file: File | null) => void
+}
+
+function renderComponent(opts: RenderOpts = {}) {
+  const showGrid = ref<boolean>(opts.showGrid ?? true)
+  const backgroundColor = ref<string>(opts.backgroundColor ?? '#000000')
+  const backgroundImage = ref<string>(opts.backgroundImage ?? '')
+  const backgroundRenderMode = ref<'tiled' | 'panorama'>(
+    opts.backgroundRenderMode ?? 'tiled'
+  )
+  const fov = ref<number>(opts.fov ?? 75)
+
+  const utils = render(SceneControls, {
+    props: {
+      showGrid: showGrid.value,
+      'onUpdate:showGrid': (v: boolean | undefined) => {
+        if (v !== undefined) showGrid.value = v
+      },
+      backgroundColor: backgroundColor.value,
+      'onUpdate:backgroundColor': (v: string | undefined) => {
+        if (v !== undefined) backgroundColor.value = v
+      },
+      backgroundImage: backgroundImage.value,
+      'onUpdate:backgroundImage': (v: string | undefined) => {
+        if (v !== undefined) backgroundImage.value = v
+      },
+      backgroundRenderMode: backgroundRenderMode.value,
+      'onUpdate:backgroundRenderMode': (
+        v: 'tiled' | 'panorama' | undefined
+      ) => {
+        if (v) backgroundRenderMode.value = v
+      },
+      fov: fov.value,
+      'onUpdate:fov': (v: number | undefined) => {
+        if (v !== undefined) fov.value = v
+      },
+      hdriActive: opts.hdriActive ?? false,
+      onUpdateBackgroundImage: opts.onUpdateBackgroundImage
+    },
+    global: {
+      plugins: [i18n],
+      directives: { tooltip: () => {} }
+    }
+  })
+
+  return {
+    ...utils,
+    showGrid,
+    backgroundColor,
+    backgroundRenderMode,
+    user: userEvent.setup()
+  }
+}
+
+describe('SceneControls', () => {
+  describe('grid', () => {
+    it('flips showGrid via v-model when the grid button is clicked', async () => {
+      const { user, showGrid } = renderComponent({ showGrid: false })
+
+      await user.click(screen.getByRole('button', { name: 'Show grid' }))
+
+      expect(showGrid.value).toBe(true)
+    })
+  })
+
+  describe('hdriActive=true', () => {
+    it('hides the background-color and upload buttons when HDRI is active', () => {
+      renderComponent({ hdriActive: true, backgroundImage: '' })
+
+      expect(
+        screen.queryByRole('button', { name: 'Background color' })
+      ).not.toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: 'Upload background image' })
+      ).not.toBeInTheDocument()
+    })
+  })
+
+  describe('without a background image', () => {
+    it('renders the background-color and upload buttons', () => {
+      renderComponent({ backgroundImage: '' })
+
+      expect(
+        screen.getByRole('button', { name: 'Background color' })
+      ).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: 'Upload background image' })
+      ).toBeInTheDocument()
+    })
+
+    it('does not render the panorama / remove / FOV controls', () => {
+      renderComponent({ backgroundImage: '' })
+
+      expect(
+        screen.queryByRole('button', { name: 'Panorama mode' })
+      ).not.toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: 'Remove background image' })
+      ).not.toBeInTheDocument()
+      expect(screen.queryByTestId('fov-popup-slider')).not.toBeInTheDocument()
+    })
+
+    it('updates backgroundColor v-model from the hidden color picker', async () => {
+      const { backgroundColor, container } = renderComponent({
+        backgroundImage: '',
+        backgroundColor: '#000000'
+      })
+
+      const colorInput = container.querySelector(
+        'input[type="color"]'
+      ) as HTMLInputElement
+      colorInput.value = '#ff0000'
+      colorInput.dispatchEvent(new Event('input', { bubbles: true }))
+
+      expect(backgroundColor.value).toBe('#ff0000')
+    })
+
+    it('emits updateBackgroundImage with the picked file', async () => {
+      const onUpdateBackgroundImage = vi.fn()
+      const { container } = renderComponent({
+        backgroundImage: '',
+        onUpdateBackgroundImage
+      })
+
+      const fileInput = container.querySelector(
+        'input[type="file"]'
+      ) as HTMLInputElement
+      const file = new File(['data'], 'bg.png', { type: 'image/png' })
+      Object.defineProperty(fileInput, 'files', { value: [file] })
+      fileInput.dispatchEvent(new Event('change'))
+
+      expect(onUpdateBackgroundImage).toHaveBeenCalledWith(file)
+    })
+  })
+
+  describe('with a background image', () => {
+    it('renders the panorama and remove buttons', () => {
+      renderComponent({ backgroundImage: 'bg.png' })
+
+      expect(
+        screen.getByRole('button', { name: 'Panorama mode' })
+      ).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: 'Remove background image' })
+      ).toBeInTheDocument()
+    })
+
+    it('toggles backgroundRenderMode between tiled and panorama on the panorama button', async () => {
+      const { user, backgroundRenderMode } = renderComponent({
+        backgroundImage: 'bg.png',
+        backgroundRenderMode: 'tiled'
+      })
+
+      await user.click(screen.getByRole('button', { name: 'Panorama mode' }))
+      expect(backgroundRenderMode.value).toBe('panorama')
+    })
+
+    it('hides the FOV PopupSlider in tiled mode', () => {
+      renderComponent({
+        backgroundImage: 'bg.png',
+        backgroundRenderMode: 'tiled'
+      })
+
+      expect(screen.queryByTestId('fov-popup-slider')).not.toBeInTheDocument()
+    })
+
+    it('shows the FOV PopupSlider in panorama mode', () => {
+      renderComponent({
+        backgroundImage: 'bg.png',
+        backgroundRenderMode: 'panorama'
+      })
+
+      expect(screen.getByTestId('fov-popup-slider')).toBeInTheDocument()
+    })
+
+    it('emits updateBackgroundImage(null) when the remove button is clicked', async () => {
+      const onUpdateBackgroundImage = vi.fn()
+      const { user } = renderComponent({
+        backgroundImage: 'bg.png',
+        onUpdateBackgroundImage
+      })
+
+      await user.click(
+        screen.getByRole('button', { name: 'Remove background image' })
+      )
+
+      expect(onUpdateBackgroundImage).toHaveBeenCalledWith(null)
+    })
+  })
+})
diff --git a/src/components/load3d/controls/ViewerControls.test.ts b/src/components/load3d/controls/ViewerControls.test.ts
new file mode 100644
index 0000000000..2656a14b45
--- /dev/null
+++ b/src/components/load3d/controls/ViewerControls.test.ts
@@ -0,0 +1,99 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { createI18n } from 'vue-i18n'
+
+import ViewerControls from '@/components/load3d/controls/ViewerControls.vue'
+import { createMockLGraphNode } from '@/utils/__tests__/litegraphTestUtils'
+
+const showDialog = vi.fn()
+const handleViewerClose = vi.fn()
+
+vi.mock('@/stores/dialogStore', () => ({
+  useDialogStore: () => ({ showDialog })
+}))
+
+vi.mock('@/services/load3dService', () => ({
+  useLoad3dService: () => ({ handleViewerClose })
+}))
+
+vi.mock('@/components/load3d/Load3dViewerContent.vue', () => ({
+  default: { name: 'Load3DViewerContentStub', template: '<div />' }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        openIn3DViewer: 'Open in 3D viewer',
+        viewer: { title: '3D viewer' }
+      }
+    }
+  }
+})
+
+const mockNode = createMockLGraphNode({ id: 'node-1' })
+
+describe('ViewerControls', () => {
+  beforeEach(() => {
+    showDialog.mockClear()
+    handleViewerClose.mockClear()
+  })
+
+  it('renders the open-in-viewer button labeled by the localized aria-label', () => {
+    render(ViewerControls, {
+      props: { node: mockNode },
+      global: {
+        plugins: [i18n],
+        directives: { tooltip: () => {} }
+      }
+    })
+
+    expect(
+      screen.getByRole('button', { name: 'Open in 3D viewer' })
+    ).toBeInTheDocument()
+  })
+
+  it('opens the dialog with the provided node and viewer component when clicked', async () => {
+    const user = userEvent.setup()
+    render(ViewerControls, {
+      props: { node: mockNode },
+      global: {
+        plugins: [i18n],
+        directives: { tooltip: () => {} }
+      }
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Open in 3D viewer' }))
+
+    expect(showDialog).toHaveBeenCalledOnce()
+    const callArgs = showDialog.mock.calls[0][0]
+    expect(callArgs.key).toBe('global-load3d-viewer')
+    expect(callArgs.title).toBe('3D viewer')
+    expect(callArgs.component).toMatchObject({
+      name: 'Load3DViewerContentStub'
+    })
+    expect(callArgs.props).toEqual({ node: mockNode })
+    expect(callArgs.dialogComponentProps.maximizable).toBe(true)
+  })
+
+  it('routes the dialog onClose handler through useLoad3dService.handleViewerClose with the node', async () => {
+    const user = userEvent.setup()
+    render(ViewerControls, {
+      props: { node: mockNode },
+      global: {
+        plugins: [i18n],
+        directives: { tooltip: () => {} }
+      }
+    })
+
+    await user.click(screen.getByRole('button', { name: 'Open in 3D viewer' }))
+
+    const onClose = showDialog.mock.calls[0][0].dialogComponentProps.onClose
+    await onClose()
+
+    expect(handleViewerClose).toHaveBeenCalledWith(mockNode)
+  })
+})
diff --git a/src/components/load3d/controls/viewer/ViewerCameraControls.test.ts b/src/components/load3d/controls/viewer/ViewerCameraControls.test.ts
new file mode 100644
index 0000000000..fe668a91b2
--- /dev/null
+++ b/src/components/load3d/controls/viewer/ViewerCameraControls.test.ts
@@ -0,0 +1,132 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import ViewerCameraControls from '@/components/load3d/controls/viewer/ViewerCameraControls.vue'
+import type { CameraType } from '@/extensions/core/load3d/interfaces'
+
+vi.mock('primevue/select', () => ({
+  default: {
+    name: 'Select',
+    props: ['modelValue', 'options', 'optionLabel', 'optionValue'],
+    emits: ['update:modelValue'],
+    template: `
+      <select
+        :value="modelValue"
+        @change="$emit('update:modelValue', $event.target.value)"
+      >
+        <option v-for="opt in options" :key="opt[optionValue]" :value="opt[optionValue]">
+          {{ opt[optionLabel] }}
+        </option>
+      </select>
+    `
+  }
+}))
+
+vi.mock('primevue/slider', () => ({
+  default: {
+    name: 'Slider',
+    props: ['modelValue', 'min', 'max', 'step', 'ariaLabel'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="range"
+        :value="modelValue"
+        :min="min"
+        :max="max"
+        :step="step"
+        :aria-label="ariaLabel"
+        @input="$emit('update:modelValue', Number($event.target.value))"
+      />
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        fov: 'FOV',
+        viewer: { cameraType: 'Camera type' },
+        cameraType: {
+          perspective: 'Perspective',
+          orthographic: 'Orthographic'
+        }
+      }
+    }
+  }
+})
+
+function renderComponent(initial: { type?: CameraType; fov?: number } = {}) {
+  const cameraType = ref<CameraType>(initial.type ?? 'perspective')
+  const fov = ref<number>(initial.fov ?? 75)
+
+  const utils = render(ViewerCameraControls, {
+    props: {
+      cameraType: cameraType.value,
+      'onUpdate:cameraType': (v: CameraType | undefined) => {
+        if (v) cameraType.value = v
+      },
+      fov: fov.value,
+      'onUpdate:fov': (v: number | undefined) => {
+        if (v !== undefined) fov.value = v
+      }
+    },
+    global: { plugins: [i18n] }
+  })
+
+  return { ...utils, cameraType, fov, user: userEvent.setup() }
+}
+
+describe('ViewerCameraControls', () => {
+  it('exposes both camera types in the dropdown', () => {
+    renderComponent()
+    const select = screen.getByRole('combobox') as HTMLSelectElement
+    const options = Array.from(select.options).map((o) => o.value)
+
+    expect(options).toEqual(['perspective', 'orthographic'])
+  })
+
+  it('shows the FOV slider when the camera is perspective', () => {
+    renderComponent({ type: 'perspective' })
+
+    expect(screen.getByLabelText('FOV')).toBeInTheDocument()
+  })
+
+  it('hides the FOV slider when the camera is orthographic', () => {
+    renderComponent({ type: 'orthographic' })
+
+    expect(screen.queryByLabelText('FOV')).not.toBeInTheDocument()
+  })
+
+  it('reveals the FOV slider when the camera type prop changes back to perspective', async () => {
+    const { rerender } = renderComponent({ type: 'orthographic' })
+    expect(screen.queryByLabelText('FOV')).not.toBeInTheDocument()
+
+    await rerender({ cameraType: 'perspective' })
+
+    expect(screen.getByLabelText('FOV')).toBeInTheDocument()
+  })
+
+  it('updates fov via v-model when the slider changes', () => {
+    const { fov } = renderComponent({ type: 'perspective', fov: 60 })
+    const slider = screen.getByLabelText('FOV') as HTMLInputElement
+
+    slider.value = '90'
+    slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+    expect(fov.value).toBe(90)
+  })
+
+  it('updates cameraType via v-model when the dropdown changes', async () => {
+    const { user, cameraType } = renderComponent({ type: 'perspective' })
+
+    await user.selectOptions(screen.getByRole('combobox'), 'orthographic')
+
+    expect(cameraType.value).toBe('orthographic')
+  })
+})
diff --git a/src/components/load3d/controls/viewer/ViewerExportControls.test.ts b/src/components/load3d/controls/viewer/ViewerExportControls.test.ts
new file mode 100644
index 0000000000..800fd3d70b
--- /dev/null
+++ b/src/components/load3d/controls/viewer/ViewerExportControls.test.ts
@@ -0,0 +1,74 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { createI18n } from 'vue-i18n'
+
+import ViewerExportControls from '@/components/load3d/controls/viewer/ViewerExportControls.vue'
+
+vi.mock('primevue/select', () => ({
+  default: {
+    name: 'Select',
+    props: ['modelValue', 'options', 'optionLabel', 'optionValue'],
+    emits: ['update:modelValue'],
+    template: `
+      <select
+        :value="modelValue"
+        @change="$emit('update:modelValue', $event.target.value)"
+      >
+        <option v-for="opt in options" :key="opt[optionValue]" :value="opt[optionValue]">
+          {{ opt[optionLabel] }}
+        </option>
+      </select>
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: { en: { load3d: { export: 'Export' } } }
+})
+
+function renderComponent(onExportModel?: (format: string) => void) {
+  const utils = render(ViewerExportControls, {
+    props: { onExportModel },
+    global: { plugins: [i18n] }
+  })
+  return { ...utils, user: userEvent.setup() }
+}
+
+describe('ViewerExportControls', () => {
+  it('renders all three export format options', () => {
+    renderComponent()
+    const select = screen.getByRole('combobox') as HTMLSelectElement
+    const optionValues = Array.from(select.options).map((o) => o.value)
+
+    expect(optionValues).toEqual(['glb', 'obj', 'stl'])
+  })
+
+  it('defaults the export format to obj', () => {
+    renderComponent()
+    expect((screen.getByRole('combobox') as HTMLSelectElement).value).toBe(
+      'obj'
+    )
+  })
+
+  it('emits exportModel with the currently selected format when the button is clicked', async () => {
+    const onExportModel = vi.fn()
+    const { user } = renderComponent(onExportModel)
+
+    await user.click(screen.getByRole('button', { name: 'Export' }))
+
+    expect(onExportModel).toHaveBeenCalledWith('obj')
+  })
+
+  it('emits the newly chosen format after the user changes the dropdown', async () => {
+    const onExportModel = vi.fn()
+    const { user } = renderComponent(onExportModel)
+
+    await user.selectOptions(screen.getByRole('combobox'), 'glb')
+    await user.click(screen.getByRole('button', { name: 'Export' }))
+
+    expect(onExportModel).toHaveBeenCalledWith('glb')
+  })
+})
diff --git a/src/components/load3d/controls/viewer/ViewerLightControls.test.ts b/src/components/load3d/controls/viewer/ViewerLightControls.test.ts
new file mode 100644
index 0000000000..4f48f19c68
--- /dev/null
+++ b/src/components/load3d/controls/viewer/ViewerLightControls.test.ts
@@ -0,0 +1,87 @@
+import { render, screen } from '@testing-library/vue'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import ViewerLightControls from '@/components/load3d/controls/viewer/ViewerLightControls.vue'
+
+const settingValues: Record<string, unknown> = {
+  'Comfy.Load3D.LightIntensityMaximum': 10,
+  'Comfy.Load3D.LightIntensityMinimum': 1,
+  'Comfy.Load3D.LightAdjustmentIncrement': 0.5
+}
+
+vi.mock('@/platform/settings/settingStore', () => ({
+  useSettingStore: () => ({
+    get: (key: string) => settingValues[key]
+  })
+}))
+
+vi.mock('primevue/slider', () => ({
+  default: {
+    name: 'Slider',
+    props: ['modelValue', 'min', 'max', 'step'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="range"
+        :value="modelValue"
+        :min="min"
+        :max="max"
+        :step="step"
+        @input="$emit('update:modelValue', Number($event.target.value))"
+      />
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: { load3d: { lightIntensity: 'Light intensity' } }
+  }
+})
+
+function renderComponent(initial = 5) {
+  const intensity = ref<number>(initial)
+  const utils = render(ViewerLightControls, {
+    props: {
+      lightIntensity: intensity.value,
+      'onUpdate:lightIntensity': (v: number | undefined) => {
+        if (v !== undefined) intensity.value = v
+      }
+    },
+    global: { plugins: [i18n] }
+  })
+  return { ...utils, intensity }
+}
+
+describe('ViewerLightControls', () => {
+  it('renders the localized label and a slider bound to lightIntensity', () => {
+    renderComponent(7)
+
+    expect(screen.getByText('Light intensity')).toBeInTheDocument()
+    const slider = screen.getByRole('slider') as HTMLInputElement
+    expect(slider.value).toBe('7')
+  })
+
+  it('forwards the min / max / step settings from the setting store onto the slider', () => {
+    renderComponent()
+    const slider = screen.getByRole('slider') as HTMLInputElement
+
+    expect(slider.min).toBe('1')
+    expect(slider.max).toBe('10')
+    expect(slider.step).toBe('0.5')
+  })
+
+  it('updates the v-model when the slider value changes', async () => {
+    const { intensity } = renderComponent(5)
+    const slider = screen.getByRole('slider') as HTMLInputElement
+
+    slider.value = '8'
+    slider.dispatchEvent(new Event('input', { bubbles: true }))
+
+    expect(intensity.value).toBe(8)
+  })
+})
diff --git a/src/components/load3d/controls/viewer/ViewerSceneControls.test.ts b/src/components/load3d/controls/viewer/ViewerSceneControls.test.ts
new file mode 100644
index 0000000000..cb106fe475
--- /dev/null
+++ b/src/components/load3d/controls/viewer/ViewerSceneControls.test.ts
@@ -0,0 +1,205 @@
+import { render, screen } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import { createI18n } from 'vue-i18n'
+
+import ViewerSceneControls from '@/components/load3d/controls/viewer/ViewerSceneControls.vue'
+
+vi.mock('primevue/checkbox', () => ({
+  default: {
+    name: 'Checkbox',
+    props: ['modelValue', 'inputId', 'binary', 'name'],
+    emits: ['update:modelValue'],
+    template: `
+      <input
+        type="checkbox"
+        :id="inputId"
+        :name="name"
+        :checked="modelValue"
+        @change="$emit('update:modelValue', $event.target.checked)"
+      />
+    `
+  }
+}))
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      load3d: {
+        backgroundColor: 'Background color',
+        showGrid: 'Show grid',
+        uploadBackgroundImage: 'Upload background image',
+        tiledMode: 'Tiled',
+        panoramaMode: 'Panorama',
+        removeBackgroundImage: 'Remove background image'
+      }
+    }
+  }
+})
+
+type RenderProps = {
+  backgroundColor?: string
+  showGrid?: boolean
+  backgroundRenderMode?: 'tiled' | 'panorama'
+  hasBackgroundImage?: boolean
+  disableBackgroundUpload?: boolean
+  onUpdateBackgroundImage?: (file: File | null) => void
+}
+
+function renderComponent(overrides: RenderProps = {}) {
+  const backgroundColor = ref<string>(overrides.backgroundColor ?? '#282828')
+  const showGrid = ref<boolean>(overrides.showGrid ?? true)
+  const backgroundRenderMode = ref<'tiled' | 'panorama'>(
+    overrides.backgroundRenderMode ?? 'tiled'
+  )
+
+  const utils = render(ViewerSceneControls, {
+    props: {
+      backgroundColor: backgroundColor.value,
+      'onUpdate:backgroundColor': (v: string | undefined) => {
+        if (v !== undefined) backgroundColor.value = v
+      },
+      showGrid: showGrid.value,
+      'onUpdate:showGrid': (v: boolean | undefined) => {
+        if (v !== undefined) showGrid.value = v
+      },
+      backgroundRenderMode: backgroundRenderMode.value,
+      'onUpdate:backgroundRenderMode': (
+        v: 'tiled' | 'panorama' | undefined
+      ) => {
+        if (v) backgroundRenderMode.value = v
+      },
+      hasBackgroundImage: overrides.hasBackgroundImage ?? false,
+      disableBackgroundUpload: overrides.disableBackgroundUpload ?? false,
+      onUpdateBackgroundImage: overrides.onUpdateBackgroundImage
+    },
+    global: { plugins: [i18n] }
+  })
+
+  return {
+    ...utils,
+    backgroundColor,
+    showGrid,
+    backgroundRenderMode,
+    user: userEvent.setup()
+  }
+}
+
+describe('ViewerSceneControls', () => {
+  describe('without a background image', () => {
+    it('renders the color picker', () => {
+      renderComponent({ hasBackgroundImage: false })
+
+      expect(screen.getByText('Background color')).toBeInTheDocument()
+    })
+
+    it('renders the upload button when uploads are not disabled', () => {
+      renderComponent({
+        hasBackgroundImage: false,
+        disableBackgroundUpload: false
+      })
+
+      expect(
+        screen.getByRole('button', { name: /upload background image/i })
+      ).toBeInTheDocument()
+    })
+
+    it('hides the upload button when uploads are disabled', () => {
+      renderComponent({
+        hasBackgroundImage: false,
+        disableBackgroundUpload: true
+      })
+
+      expect(
+        screen.queryByRole('button', { name: /upload background image/i })
+      ).not.toBeInTheDocument()
+    })
+
+    it('does not render the tiled / panorama / remove buttons', () => {
+      renderComponent({ hasBackgroundImage: false })
+
+      expect(
+        screen.queryByRole('button', { name: 'Tiled' })
+      ).not.toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: 'Panorama' })
+      ).not.toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: /remove background image/i })
+      ).not.toBeInTheDocument()
+    })
+  })
+
+  describe('with a background image', () => {
+    it('hides the color picker and upload button', () => {
+      renderComponent({ hasBackgroundImage: true })
+
+      expect(screen.queryByText('Background color')).not.toBeInTheDocument()
+      expect(
+        screen.queryByRole('button', { name: /upload background image/i })
+      ).not.toBeInTheDocument()
+    })
+
+    it('renders the tiled / panorama / remove buttons', () => {
+      renderComponent({ hasBackgroundImage: true })
+
+      expect(screen.getByRole('button', { name: 'Tiled' })).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: 'Panorama' })
+      ).toBeInTheDocument()
+      expect(
+        screen.getByRole('button', { name: /remove background image/i })
+      ).toBeInTheDocument()
+    })
+
+    it('updates backgroundRenderMode v-model to tiled when the tiled button is clicked', async () => {
+      const { user, backgroundRenderMode } = renderComponent({
+        hasBackgroundImage: true,
+        backgroundRenderMode: 'panorama'
+      })
+
+      await user.click(screen.getByRole('button', { name: 'Tiled' }))
+
+      expect(backgroundRenderMode.value).toBe('tiled')
+    })
+
+    it('updates backgroundRenderMode v-model to panorama when the panorama button is clicked', async () => {
+      const { user, backgroundRenderMode } = renderComponent({
+        hasBackgroundImage: true,
+        backgroundRenderMode: 'tiled'
+      })
+
+      await user.click(screen.getByRole('button', { name: 'Panorama' }))
+
+      expect(backgroundRenderMode.value).toBe('panorama')
+    })
+
+    it('emits updateBackgroundImage(null) when the remove button is clicked', async () => {
+      const onUpdateBackgroundImage = vi.fn()
+      const { user } = renderComponent({
+        hasBackgroundImage: true,
+        onUpdateBackgroundImage
+      })
+
+      await user.click(
+        screen.getByRole('button', { name: /remove background image/i })
+      )
+
+      expect(onUpdateBackgroundImage).toHaveBeenCalledWith(null)
+    })
+  })
+
+  describe('show grid', () => {
+    it('emits the toggled value via v-model', async () => {
+      const { user, showGrid } = renderComponent({ showGrid: true })
+      const checkbox = screen.getByRole('checkbox')
+
+      await user.click(checkbox)
+
+      expect(showGrid.value).toBe(false)
+    })
+  })
+})
diff --git a/src/renderer/extensions/linearMode/Preview3d.test.ts b/src/renderer/extensions/linearMode/Preview3d.test.ts
index 6629942be6..21d484dca8 100644
--- a/src/renderer/extensions/linearMode/Preview3d.test.ts
+++ b/src/renderer/extensions/linearMode/Preview3d.test.ts
@@ -1,11 +1,13 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { nextTick } from 'vue'
 
-import { render } from '@testing-library/vue'
+import { render, screen } from '@testing-library/vue'
 
 const initializeStandaloneViewer = vi.fn()
 const cleanup = vi.fn()
 
+const viewerOverrides: Record<string, unknown> = {}
+
 vi.mock('@/composables/useLoad3dViewer', () => ({
   useLoad3dViewer: () => ({
     initializeStandaloneViewer,
@@ -16,20 +18,45 @@ vi.mock('@/composables/useLoad3dViewer', () => ({
     handleBackgroundImageUpdate: vi.fn(),
     exportModel: vi.fn(),
     handleSeek: vi.fn(),
-    isSplatModel: false,
-    isPlyModel: false,
+    canUseGizmo: true,
+    canUseLighting: true,
+    canExport: true,
+    materialModes: ['original', 'normal', 'wireframe'],
     hasSkeleton: false,
     animations: [],
     playing: false,
     selectedSpeed: 1,
     selectedAnimation: 0,
     animationProgress: 0,
-    animationDuration: 0
+    animationDuration: 0,
+    ...viewerOverrides
   })
 }))
 
 vi.mock('@/components/load3d/Load3DControls.vue', () => ({
-  default: { template: '<div />' }
+  default: {
+    name: 'Load3DControlsStub',
+    props: [
+      'sceneConfig',
+      'modelConfig',
+      'cameraConfig',
+      'lightConfig',
+      'canUseGizmo',
+      'canUseLighting',
+      'canExport',
+      'materialModes',
+      'hasSkeleton'
+    ],
+    template: `
+      <div data-testid="load3d-controls"
+           :data-can-use-gizmo="canUseGizmo"
+           :data-can-use-lighting="canUseLighting"
+           :data-can-export="canExport"
+           :data-has-skeleton="hasSkeleton"
+           :data-material-modes="JSON.stringify(materialModes)"
+      />
+    `
+  }
 }))
 
 vi.mock('@/components/load3d/controls/AnimationControls.vue', () => ({
@@ -39,6 +66,7 @@ vi.mock('@/components/load3d/controls/AnimationControls.vue', () => ({
 describe('Preview3d', () => {
   beforeEach(() => {
     vi.clearAllMocks()
+    for (const k of Object.keys(viewerOverrides)) delete viewerOverrides[k]
   })
 
   afterEach(() => {
@@ -102,6 +130,27 @@ describe('Preview3d', () => {
     expect(cleanup).toHaveBeenCalledOnce()
   })
 
+  it('forwards the viewer capability flags to Load3DControls', async () => {
+    Object.assign(viewerOverrides, {
+      canUseGizmo: false,
+      canUseLighting: false,
+      canExport: false,
+      materialModes: [],
+      hasSkeleton: true
+    })
+
+    const { unmount } = await renderPreview3d()
+
+    const controls = await screen.findByTestId('load3d-controls')
+    expect(controls.getAttribute('data-can-use-gizmo')).toBe('false')
+    expect(controls.getAttribute('data-can-use-lighting')).toBe('false')
+    expect(controls.getAttribute('data-can-export')).toBe('false')
+    expect(controls.getAttribute('data-has-skeleton')).toBe('true')
+    expect(controls.getAttribute('data-material-modes')).toBe('[]')
+
+    unmount()
+  })
+
   it('reinitializes when modelUrl changes on existing instance', async () => {
     const result = await renderPreview3d(
       'http://localhost/view?filename=model-a.glb'