diff --git a/packages/shared-frontend-utils/package.json b/packages/shared-frontend-utils/package.json
index aa18c7a940..b7f44969d4 100644
--- a/packages/shared-frontend-utils/package.json
+++ b/packages/shared-frontend-utils/package.json
@@ -7,6 +7,7 @@
   "type": "module",
   "exports": {
     "./formatUtil": "./src/formatUtil.ts",
+    "./mediaExtensions": "./src/mediaExtensions.ts",
     "./networkUtil": "./src/networkUtil.ts"
   },
   "scripts": {
diff --git a/packages/shared-frontend-utils/src/formatUtil.test.ts b/packages/shared-frontend-utils/src/formatUtil.test.ts
index cf64b26ec8..86231c8a8a 100644
--- a/packages/shared-frontend-utils/src/formatUtil.test.ts
+++ b/packages/shared-frontend-utils/src/formatUtil.test.ts
@@ -12,7 +12,6 @@ import {
   highlightQuery,
   isCivitaiModelUrl,
   isCivitaiUrl,
-  isPreviewableMediaType,
   joinFilePath,
   truncateFilename
 } from './formatUtil'
@@ -111,6 +110,11 @@ describe('formatUtil', () => {
         expect(getMediaTypeFromFilename('scene.fbx')).toBe('3D')
         expect(getMediaTypeFromFilename('asset.gltf')).toBe('3D')
         expect(getMediaTypeFromFilename('binary.glb')).toBe('3D')
+        expect(getMediaTypeFromFilename('scan.ply')).toBe('3D')
+        expect(getMediaTypeFromFilename('mesh.stl')).toBe('3D')
+        expect(getMediaTypeFromFilename('pointcloud.spz')).toBe('3D')
+        expect(getMediaTypeFromFilename('scene.splat')).toBe('3D')
+        expect(getMediaTypeFromFilename('scene.ksplat')).toBe('3D')
         expect(getMediaTypeFromFilename('apple.usdz')).toBe('3D')
       })
     })
@@ -410,20 +414,6 @@ describe('formatUtil', () => {
     })
   })
 
-  describe('isPreviewableMediaType', () => {
-    it('returns true for image/video/audio/3D', () => {
-      expect(isPreviewableMediaType('image')).toBe(true)
-      expect(isPreviewableMediaType('video')).toBe(true)
-      expect(isPreviewableMediaType('audio')).toBe(true)
-      expect(isPreviewableMediaType('3D')).toBe(true)
-    })
-
-    it('returns false for text/other', () => {
-      expect(isPreviewableMediaType('text')).toBe(false)
-      expect(isPreviewableMediaType('other')).toBe(false)
-    })
-  })
-
   describe('isCivitaiUrl', () => {
     it.for([
       { url: 'https://civitai.com/models/123', expected: true },
diff --git a/packages/shared-frontend-utils/src/formatUtil.ts b/packages/shared-frontend-utils/src/formatUtil.ts
index 99b6bc79f5..e18afab0d9 100644
--- a/packages/shared-frontend-utils/src/formatUtil.ts
+++ b/packages/shared-frontend-utils/src/formatUtil.ts
@@ -1,5 +1,6 @@
 import { default as DOMPurify } from 'dompurify'
 import type { operations } from '@comfyorg/registry-types'
+import { isThreeDMediaExtension } from '@comfyorg/shared-frontend-utils/mediaExtensions'
 
 export function formatCamelCase(str: string): string {
   // Check if the string is camel case
@@ -591,7 +592,6 @@ const IMAGE_EXTENSIONS = [
 ] as const
 const VIDEO_EXTENSIONS = ['mp4', 'm4v', 'webm', 'mov', 'avi', 'mkv'] as const
 const AUDIO_EXTENSIONS = ['mp3', 'wav', 'ogg', 'flac'] as const
-const THREE_D_EXTENSIONS = ['obj', 'fbx', 'gltf', 'glb', 'usdz'] as const
 const TEXT_EXTENSIONS = [
   'txt',
   'md',
@@ -611,7 +611,6 @@ export type MediaType = (typeof MEDIA_TYPES)[number]
 type ImageExtension = (typeof IMAGE_EXTENSIONS)[number]
 type VideoExtension = (typeof VIDEO_EXTENSIONS)[number]
 type AudioExtension = (typeof AUDIO_EXTENSIONS)[number]
-type ThreeDExtension = (typeof THREE_D_EXTENSIONS)[number]
 type TextExtension = (typeof TEXT_EXTENSIONS)[number]
 
 /**
@@ -655,26 +654,22 @@ export function getMediaTypeFromFilename(
   filename: string | null | undefined
 ): MediaType {
   if (!filename) return 'other'
-  const ext = filename.split('.').pop()?.toLowerCase()
+  const ext = getFileExtension(filename)
   if (!ext) return 'other'
 
   // Type-safe array includes check using type assertion
   if (IMAGE_EXTENSIONS.includes(ext as ImageExtension)) return 'image'
   if (VIDEO_EXTENSIONS.includes(ext as VideoExtension)) return 'video'
   if (AUDIO_EXTENSIONS.includes(ext as AudioExtension)) return 'audio'
-  if (THREE_D_EXTENSIONS.includes(ext as ThreeDExtension)) return '3D'
+  if (isThreeDMediaExtension(ext)) return '3D'
   if (TEXT_EXTENSIONS.includes(ext as TextExtension)) return 'text'
 
   return 'other'
 }
 
-export function isPreviewableMediaType(mediaType: MediaType): boolean {
-  return (
-    mediaType === 'image' ||
-    mediaType === 'video' ||
-    mediaType === 'audio' ||
-    mediaType === '3D'
-  )
+function getFileExtension(filename: string | null | undefined): string | null {
+  if (!filename) return null
+  return filename.split('.').pop()?.toLowerCase() ?? null
 }
 
 export function formatTime(seconds: number): string {
diff --git a/packages/shared-frontend-utils/src/mediaExtensions.ts b/packages/shared-frontend-utils/src/mediaExtensions.ts
new file mode 100644
index 0000000000..c958a4e066
--- /dev/null
+++ b/packages/shared-frontend-utils/src/mediaExtensions.ts
@@ -0,0 +1,44 @@
+export const THREE_D_LOADABLE_EXTENSIONS = [
+  'gltf',
+  'glb',
+  'obj',
+  'fbx',
+  'stl',
+  'spz',
+  'splat',
+  'ply',
+  'ksplat'
+] as const
+
+const THREE_D_NON_LOADABLE_MEDIA_EXTENSIONS = ['usdz'] as const
+
+// Classification is broader than viewer support: some valid 3D assets, such
+// as USDZ, can be listed/downloaded but cannot be loaded by the in-app viewer.
+export const THREE_D_MEDIA_EXTENSIONS = [
+  ...THREE_D_LOADABLE_EXTENSIONS,
+  ...THREE_D_NON_LOADABLE_MEDIA_EXTENSIONS
+] as const
+
+export type ThreeDLoadableExtension =
+  (typeof THREE_D_LOADABLE_EXTENSIONS)[number]
+export type ThreeDMediaExtension = (typeof THREE_D_MEDIA_EXTENSIONS)[number]
+
+export function isThreeDLoadableExtension(
+  extension: string | null | undefined
+): boolean {
+  const normalized = extension?.toLowerCase()
+  return (
+    typeof normalized === 'string' &&
+    THREE_D_LOADABLE_EXTENSIONS.includes(normalized as ThreeDLoadableExtension)
+  )
+}
+
+export function isThreeDMediaExtension(
+  extension: string | null | undefined
+): boolean {
+  const normalized = extension?.toLowerCase()
+  return (
+    typeof normalized === 'string' &&
+    THREE_D_MEDIA_EXTENSIONS.includes(normalized as ThreeDMediaExtension)
+  )
+}
diff --git a/src/components/queue/QueueProgressOverlay.test.ts b/src/components/queue/QueueProgressOverlay.test.ts
index 067c8084d9..d866be7c08 100644
--- a/src/components/queue/QueueProgressOverlay.test.ts
+++ b/src/components/queue/QueueProgressOverlay.test.ts
@@ -6,8 +6,15 @@ import { defineComponent } from 'vue'
 
 import QueueProgressOverlay from '@/components/queue/QueueProgressOverlay.vue'
 import { i18n } from '@/i18n'
+import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
 import type { JobStatus } from '@/platform/remote/comfyui/jobs/jobTypes'
-import { TaskItemImpl, useQueueStore } from '@/stores/queueStore'
+import { useAssetsStore } from '@/stores/assetsStore'
+import { useDialogStore } from '@/stores/dialogStore'
+import {
+  ResultItemImpl,
+  TaskItemImpl,
+  useQueueStore
+} from '@/stores/queueStore'
 import { useSidebarTabStore } from '@/stores/workspace/sidebarTabStore'
 
 vi.mock('@/platform/distribution/types', () => ({
@@ -20,28 +27,58 @@ const QueueOverlayExpandedStub = defineComponent({
     headerTitle: {
       type: String,
       required: true
+    },
+    displayedJobGroups: {
+      type: Array,
+      required: true
     }
   },
   template: `
     <div>
       <div data-testid="expanded-title">{{ headerTitle }}</div>
       <button data-testid="show-assets-button" @click="$emit('show-assets')" />
+      <button
+        v-if="displayedJobGroups[0]?.items[0]"
+        data-testid="view-first-job"
+        @click="$emit('view-item', displayedJobGroups[0].items[0])"
+      />
     </div>
   `
 })
 
-function createTask(id: string, status: JobStatus): TaskItemImpl {
-  return new TaskItemImpl({
-    id,
-    status,
-    create_time: 0,
-    priority: 0
+function createTask(
+  id: string,
+  status: JobStatus,
+  outputs: ResultItemImpl[] = []
+): TaskItemImpl {
+  return new TaskItemImpl(
+    {
+      id,
+      status,
+      create_time: 0,
+      execution_start_time: 0,
+      execution_end_time: 1000,
+      priority: 0
+    },
+    {},
+    outputs
+  )
+}
+
+function createOutput(filename: string): ResultItemImpl {
+  return new ResultItemImpl({
+    filename,
+    subfolder: '',
+    type: 'output',
+    nodeId: 'node-1',
+    mediaType: '3D'
   })
 }
 
 function renderComponent(
   runningTasks: TaskItemImpl[],
-  pendingTasks: TaskItemImpl[]
+  pendingTasks: TaskItemImpl[],
+  historyTasks: TaskItemImpl[] = []
 ) {
   const pinia = createTestingPinia({
     createSpy: vi.fn,
@@ -49,8 +86,11 @@ function renderComponent(
   })
   const queueStore = useQueueStore(pinia)
   const sidebarTabStore = useSidebarTabStore(pinia)
+  const assetsStore = useAssetsStore(pinia)
+  const dialogStore = useDialogStore(pinia)
   queueStore.runningTasks = runningTasks
   queueStore.pendingTasks = pendingTasks
+  queueStore.historyTasks = historyTasks
 
   const user = userEvent.setup()
 
@@ -71,7 +111,7 @@ function renderComponent(
     }
   })
 
-  return { sidebarTabStore, user }
+  return { assetsStore, dialogStore, sidebarTabStore, user }
 }
 
 describe('QueueProgressOverlay', () => {
@@ -116,4 +156,22 @@ describe('QueueProgressOverlay', () => {
     await user.click(screen.getByTestId('show-assets-button'))
     expect(sidebarTabStore.activeSidebarTabId).toBe(null)
   })
+
+  it('opens loadable 3D outputs in the 3D viewer dialog', async () => {
+    const task = createTask('completed-3d', 'completed', [
+      createOutput('model.ply')
+    ])
+    const { assetsStore, dialogStore, user } = renderComponent([], [], [task])
+    vi.spyOn(assetsStore, 'updateHistory').mockResolvedValue()
+    assetsStore.historyAssets = [{ id: 'completed-3d' } as AssetItem]
+
+    await user.click(screen.getByTestId('view-first-job'))
+
+    expect(dialogStore.dialogStack[0]).toMatchObject({
+      key: 'asset-3d-viewer',
+      contentProps: {
+        modelUrl: expect.stringContaining('model.ply')
+      }
+    })
+  })
 })
diff --git a/src/components/queue/QueueProgressOverlay.vue b/src/components/queue/QueueProgressOverlay.vue
index 9ba1dea9f9..0f254fbb8c 100644
--- a/src/components/queue/QueueProgressOverlay.vue
+++ b/src/components/queue/QueueProgressOverlay.vue
@@ -64,15 +64,18 @@ import { useQueueClearHistoryDialog } from '@/composables/queue/useQueueClearHis
 import { useQueueProgress } from '@/composables/queue/useQueueProgress'
 import { useResultGallery } from '@/composables/queue/useResultGallery'
 import { useErrorHandling } from '@/composables/useErrorHandling'
+import { useLoad3dViewerDialog } from '@/composables/useLoad3dViewerDialog'
 import { useAssetSelectionStore } from '@/platform/assets/composables/useAssetSelectionStore'
 import { isCloud } from '@/platform/distribution/types'
 import { useSurveyFeatureTracking } from '@/platform/surveys/useSurveyFeatureTracking'
 import { api } from '@/scripts/api'
+import { getInspectionTargetsForTask } from '@/services/jobOutputCache'
 import { useAssetsStore } from '@/stores/assetsStore'
 import { useCommandStore } from '@/stores/commandStore'
 import { useExecutionStore } from '@/stores/executionStore'
 import { useQueueStore } from '@/stores/queueStore'
 import { useSidebarTabStore } from '@/stores/workspace/sidebarTabStore'
+import { getPreferredInspectionTarget } from '@/utils/inspectionTarget'
 
 type OverlayState = 'hidden' | 'active' | 'expanded'
 
@@ -92,6 +95,7 @@ const executionStore = useExecutionStore()
 const sidebarTabStore = useSidebarTabStore()
 const assetsStore = useAssetsStore()
 const assetSelectionStore = useAssetSelectionStore()
+const { openLoad3dViewer } = useLoad3dViewerDialog()
 const { showQueueClearHistoryDialog } = useQueueClearHistoryDialog()
 const { wrapWithErrorHandlingAsync } = useErrorHandling()
 const { trackFeatureUsed } = useSurveyFeatureTracking('queue-progress-overlay')
@@ -244,8 +248,7 @@ const openAssetsSidebar = () => {
 const focusAssetInSidebar = async (item: JobListItem) => {
   const task = item.taskRef
   const jobId = task?.jobId
-  const preview = task?.previewOutput
-  if (!jobId || !preview) return
+  if (!jobId) return
 
   const assetId = String(jobId)
   openAssetsSidebar()
@@ -264,7 +267,24 @@ const focusAssetInSidebar = async (item: JobListItem) => {
 const inspectJobAsset = wrapWithErrorHandlingAsync(
   async (item: JobListItem) => {
     trackFeatureUsed()
-    await openResultGallery(item)
+    const task = item.taskRef
+    if (!task) return
+
+    const targets = await getInspectionTargetsForTask(task)
+    if (targets === null) return
+
+    const target = getPreferredInspectionTarget(targets)
+    if (!target) return
+
+    if (target.kind === 'load3d') {
+      openLoad3dViewer({
+        title: item.title,
+        modelUrl: target.output.url
+      })
+    } else {
+      await openResultGallery(item)
+    }
+
     await focusAssetInSidebar(item)
   }
 )
diff --git a/src/components/queue/job/JobAssetsList.test.ts b/src/components/queue/job/JobAssetsList.test.ts
index 6ddff89c02..f3a91eb86c 100644
--- a/src/components/queue/job/JobAssetsList.test.ts
+++ b/src/components/queue/job/JobAssetsList.test.ts
@@ -151,15 +151,21 @@ vi.mock('vue-i18n', () => {
 })
 
 type TestPreviewOutput = {
+  filename: string
+  type: string
   url: string
   previewUrl: string
   isImage: boolean
   isVideo: boolean
+  isAudio: boolean
+  is3D: boolean
 }
 
 type TestTaskRef = {
   workflowId?: string
   previewOutput?: TestPreviewOutput
+  flatOutputs: TestPreviewOutput[]
+  outputsCount?: number
 }
 
 type TestJobListItem = Omit<JobListItem, 'taskRef'> & {
@@ -176,16 +182,42 @@ const createPreviewOutput = (
 ): TestPreviewOutput => {
   const url = `/api/view/${filename}`
   return {
+    filename,
+    type: 'output',
     url,
     previewUrl: mediaType === 'images' ? `${url}?res=512` : url,
     isImage: mediaType === 'images',
-    isVideo: mediaType === 'video'
+    isVideo: mediaType === 'video',
+    isAudio: mediaType === 'audio',
+    is3D: [
+      'glb',
+      'gltf',
+      'obj',
+      'fbx',
+      'stl',
+      'spz',
+      'splat',
+      'ply',
+      'ksplat',
+      'usdz'
+    ].some((extension) => filename.endsWith(`.${extension}`))
   }
 }
 
-const createTaskRef = (preview?: TestPreviewOutput): TestTaskRef => ({
+const createTaskRef = (
+  preview?: TestPreviewOutput,
+  inspectionOutput: TestPreviewOutput | null = preview ?? null
+): TestTaskRef => ({
   workflowId: 'workflow-1',
-  ...(preview && { previewOutput: preview })
+  ...(preview && { previewOutput: preview }),
+  flatOutputs:
+    inspectionOutput && inspectionOutput !== preview
+      ? [preview, inspectionOutput].filter(
+          (output): output is TestPreviewOutput => !!output
+        )
+      : preview
+        ? [preview]
+        : []
 })
 
 const buildJob = (
@@ -368,10 +400,28 @@ describe('JobAssetsList', () => {
     expect(onViewItem).not.toHaveBeenCalled()
   })
 
-  it('emits viewItem from the View button for completed jobs without preview output', async () => {
+  it('does not emit viewItem for completed jobs without an inspection target', async () => {
     const job = buildJob({
       iconImageUrl: undefined,
-      taskRef: createTaskRef()
+      taskRef: createTaskRef(createPreviewOutput('job-1.usdz', 'model'), null)
+    })
+    const onViewItem = vi.fn()
+    const { container } = renderJobAssetsList({ jobs: [job], onViewItem })
+
+    const jobRow = container.querySelector(`[data-job-id="${job.id}"]`)!
+    await fireEvent.mouseEnter(jobRow)
+
+    expect(screen.queryByText('menuLabels.View')).not.toBeInTheDocument()
+    await nextTick()
+
+    expect(onViewItem).not.toHaveBeenCalled()
+  })
+
+  it('emits viewItem from the View button for completed jobs with an inspection target', async () => {
+    const inspectionTarget = createPreviewOutput('job-1.ply', 'model')
+    const job = buildJob({
+      iconImageUrl: undefined,
+      taskRef: createTaskRef(undefined, inspectionTarget)
     })
     const onViewItem = vi.fn()
     const { container } = renderJobAssetsList({ jobs: [job], onViewItem })
diff --git a/src/components/queue/job/JobAssetsList.vue b/src/components/queue/job/JobAssetsList.vue
index 552b38084c..5bea8dd295 100644
--- a/src/components/queue/job/JobAssetsList.vue
+++ b/src/components/queue/job/JobAssetsList.vue
@@ -67,7 +67,7 @@
                   <i class="icon-[lucide--trash-2] size-4" />
                 </Button>
                 <Button
-                  v-else-if="row.job.state === 'completed'"
+                  v-else-if="canInspectCompletedAsset(row.job)"
                   variant="textonly"
                   size="sm"
                   @click.stop="emitCompletedViewItem(row.job)"
@@ -115,6 +115,7 @@ import AssetsListItem from '@/platform/assets/components/AssetsListItem.vue'
 import { cn } from '@comfyorg/tailwind-utils'
 import { iconForJobState } from '@/utils/queueDisplay'
 import { isActiveJobState } from '@/utils/queueUtil'
+import { canAttemptTaskInspection } from '@/utils/inspectionTarget'
 
 import { buildVirtualJobRows } from './buildVirtualJobRows'
 import type { VirtualJobRow } from './buildVirtualJobRows'
@@ -346,12 +347,16 @@ function isVideoPreviewJob(job: JobListItem) {
   return job.state === 'completed' && !!getPreviewOutput(job)?.isVideo
 }
 
-function isPreviewableCompletedJob(job: JobListItem) {
-  return job.state === 'completed' && !!getPreviewOutput(job)
+function canInspectCompletedAsset(job: JobListItem) {
+  return (
+    job.state === 'completed' &&
+    !!job.taskRef &&
+    canAttemptTaskInspection(job.taskRef)
+  )
 }
 
 function emitViewItem(job: JobListItem) {
-  if (isPreviewableCompletedJob(job)) {
+  if (canInspectCompletedAsset(job)) {
     resetActiveDetails()
     emit('viewItem', job)
   }
diff --git a/src/components/sidebar/tabs/AssetsSidebarTab.vue b/src/components/sidebar/tabs/AssetsSidebarTab.vue
index ce661eef00..a0d99e3ddd 100644
--- a/src/components/sidebar/tabs/AssetsSidebarTab.vue
+++ b/src/components/sidebar/tabs/AssetsSidebarTab.vue
@@ -189,7 +189,6 @@
     ref="contextMenuRef"
     :asset="contextMenuAsset"
     :asset-type="contextMenuAssetType"
-    :file-kind="contextMenuFileKind"
     :show-delete-button="shouldShowDeleteButton"
     :selected-assets="selectedAssets"
     :is-bulk-mode="isBulkMode"
@@ -214,15 +213,7 @@ import {
   useTimeoutFn
 } from '@vueuse/core'
 import { useToast } from 'primevue/usetoast'
-import {
-  computed,
-  defineAsyncComponent,
-  nextTick,
-  onMounted,
-  onUnmounted,
-  ref,
-  watch
-} from 'vue'
+import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 
 import NoResultsPlaceholder from '@/components/common/NoResultsPlaceholder.vue'
@@ -242,27 +233,21 @@ import { useAssetSelection } from '@/platform/assets/composables/useAssetSelecti
 import { useMediaAssetActions } from '@/platform/assets/composables/useMediaAssetActions'
 import { useMediaAssetFiltering } from '@/platform/assets/composables/useMediaAssetFiltering'
 import { useOutputStacks } from '@/platform/assets/composables/useOutputStacks'
+import { useLoad3dViewerDialog } from '@/composables/useLoad3dViewerDialog'
 import type { OutputAssetMetadata } from '@/platform/assets/schemas/assetMetadataSchema'
 import { getOutputAssetMetadata } from '@/platform/assets/schemas/assetMetadataSchema'
 import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
 import { getAssetDisplayName } from '@/platform/assets/utils/assetMetadataUtils'
-import type { MediaKind } from '@/platform/assets/schemas/mediaAssetSchema'
+import { getAssetUrl } from '@/platform/assets/utils/assetUrlUtil'
 import { resolveOutputAssetItems } from '@/platform/assets/utils/outputAssetUtil'
 import { isCloud } from '@/platform/distribution/types'
-import { useDialogStore } from '@/stores/dialogStore'
 import { ResultItemImpl } from '@/stores/queueStore'
-import {
-  formatDuration,
-  getMediaTypeFromFilename,
-  isPreviewableMediaType
-} from '@/utils/formatUtil'
+import { formatDuration, getMediaTypeFromFilename } from '@/utils/formatUtil'
+import { getInspectionKindForFilename } from '@/utils/inspectionTarget'
 import { cn } from '@comfyorg/tailwind-utils'
 
-const Load3dViewerContent = defineAsyncComponent(
-  () => import('@/components/load3d/Load3dViewerContent.vue')
-)
-
 const { t } = useI18n()
+const { openLoad3dViewer } = useLoad3dViewerDialog()
 
 const emit = defineEmits<{ assetSelected: [asset: AssetItem] }>()
 
@@ -291,10 +276,6 @@ const contextMenuAssetType = computed(() =>
   contextMenuAsset.value ? getAssetType(contextMenuAsset.value.tags) : 'input'
 )
 
-const contextMenuFileKind = computed<MediaKind>(() =>
-  getMediaTypeFromFilename(contextMenuAsset.value?.name ?? '')
-)
-
 const shouldShowOutputCount = (item: AssetItem): boolean => {
   if (activeTab.value !== 'output' || isInFolderView.value) {
     return false
@@ -420,9 +401,9 @@ const visibleAssets = computed(() => {
   return listViewSelectableAssets.value
 })
 
-const previewableVisibleAssets = computed(() =>
-  visibleAssets.value.filter((asset) =>
-    isPreviewableMediaType(getMediaTypeFromFilename(asset.name))
+const lightboxVisibleAssets = computed(() =>
+  visibleAssets.value.filter(
+    (asset) => getInspectionKindForFilename(asset.name) === 'lightbox'
   )
 )
 
@@ -451,7 +432,7 @@ watch(visibleAssets, (newAssets) => {
   // so selection stays consistent with what this view can act on.
   reconcileSelection(newAssets)
   if (currentGalleryAssetId.value && galleryActiveIndex.value !== -1) {
-    const newIndex = previewableVisibleAssets.value.findIndex(
+    const newIndex = lightboxVisibleAssets.value.findIndex(
       (asset) => asset.id === currentGalleryAssetId.value
     )
     galleryActiveIndex.value = newIndex
@@ -465,7 +446,7 @@ watch(galleryActiveIndex, (index) => {
 })
 
 const galleryItems = computed(() => {
-  return previewableVisibleAssets.value.map((asset) => {
+  return lightboxVisibleAssets.value.map((asset) => {
     const mediaType = getMediaTypeFromFilename(asset.name)
     const resultItem = new ResultItemImpl({
       filename: asset.name,
@@ -570,32 +551,20 @@ const handleDeleteSelected = async () => {
 }
 
 const handleZoomClick = (asset: AssetItem) => {
-  const mediaType = getMediaTypeFromFilename(asset.name)
-  if (!isPreviewableMediaType(mediaType)) {
-    return
-  }
+  const inspectionKind = getInspectionKindForFilename(asset.name)
 
-  if (mediaType === '3D') {
-    const dialogStore = useDialogStore()
-    dialogStore.showDialog({
-      key: 'asset-3d-viewer',
+  if (inspectionKind === 'load3d') {
+    openLoad3dViewer({
       title: getAssetDisplayName(asset),
-      component: Load3dViewerContent,
-      props: {
-        modelUrl: asset.preview_url || ''
-      },
-      dialogComponentProps: {
-        style: 'width: 80vw; height: 80vh;',
-        maximizable: true
-      }
+      modelUrl: asset.preview_url || getAssetUrl(asset)
     })
     return
   }
 
+  if (inspectionKind !== 'lightbox') return
+
   currentGalleryAssetId.value = asset.id
-  const index = previewableVisibleAssets.value.findIndex(
-    (a) => a.id === asset.id
-  )
+  const index = lightboxVisibleAssets.value.findIndex((a) => a.id === asset.id)
   if (index !== -1) {
     galleryActiveIndex.value = index
   }
diff --git a/src/components/sidebar/tabs/JobHistorySidebarTab.vue b/src/components/sidebar/tabs/JobHistorySidebarTab.vue
index b36b9ed428..3c774c5d6a 100644
--- a/src/components/sidebar/tabs/JobHistorySidebarTab.vue
+++ b/src/components/sidebar/tabs/JobHistorySidebarTab.vue
@@ -71,7 +71,7 @@
 </template>
 
 <script setup lang="ts">
-import { computed, defineAsyncComponent, ref } from 'vue'
+import { computed, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 
 import JobFilterActions from '@/components/queue/job/JobFilterActions.vue'
@@ -86,24 +86,22 @@ import type { JobListItem, JobTab } from '@/composables/queue/useJobList'
 import { useQueueClearHistoryDialog } from '@/composables/queue/useQueueClearHistoryDialog'
 import { useResultGallery } from '@/composables/queue/useResultGallery'
 import { useErrorHandling } from '@/composables/useErrorHandling'
+import { useLoad3dViewerDialog } from '@/composables/useLoad3dViewerDialog'
 import SidebarTabTemplate from '@/components/sidebar/tabs/SidebarTabTemplate.vue'
 import MediaLightbox from '@/components/sidebar/tabs/queue/MediaLightbox.vue'
 import Button from '@/components/ui/button/Button.vue'
 import { useSurveyFeatureTracking } from '@/platform/surveys/useSurveyFeatureTracking'
+import { getInspectionTargetsForTask } from '@/services/jobOutputCache'
 import { useCommandStore } from '@/stores/commandStore'
-import { useDialogStore } from '@/stores/dialogStore'
 import { useExecutionStore } from '@/stores/executionStore'
 import { useQueueStore } from '@/stores/queueStore'
-
-const Load3dViewerContent = defineAsyncComponent(
-  () => import('@/components/load3d/Load3dViewerContent.vue')
-)
+import { getPreferredInspectionTarget } from '@/utils/inspectionTarget'
 
 const { t, n } = useI18n()
 const commandStore = useCommandStore()
-const dialogStore = useDialogStore()
 const executionStore = useExecutionStore()
 const queueStore = useQueueStore()
+const { openLoad3dViewer } = useLoad3dViewerDialog()
 const { showQueueClearHistoryDialog } = useQueueClearHistoryDialog()
 const { wrapWithErrorHandlingAsync } = useErrorHandling()
 const { trackFeatureUsed } = useSurveyFeatureTracking('queue-progress-overlay')
@@ -175,20 +173,19 @@ const {
 
 const onViewItem = wrapWithErrorHandlingAsync(async (item: JobListItem) => {
   trackFeatureUsed()
-  const previewOutput = item.taskRef?.previewOutput
+  const task = item.taskRef
+  if (!task) return
 
-  if (previewOutput?.is3D) {
-    dialogStore.showDialog({
-      key: 'asset-3d-viewer',
+  const targets = await getInspectionTargetsForTask(task)
+  if (targets === null) return
+
+  const target = getPreferredInspectionTarget(targets)
+  if (!target) return
+
+  if (target.kind === 'load3d') {
+    openLoad3dViewer({
       title: item.title,
-      component: Load3dViewerContent,
-      props: {
-        modelUrl: previewOutput.url || ''
-      },
-      dialogComponentProps: {
-        style: 'width: 80vw; height: 80vh;',
-        maximizable: true
-      }
+      modelUrl: target.output.url
     })
     return
   }
diff --git a/src/composables/queue/useJobMenu.test.ts b/src/composables/queue/useJobMenu.test.ts
index ccd67f96d2..2c91178ead 100644
--- a/src/composables/queue/useJobMenu.test.ts
+++ b/src/composables/queue/useJobMenu.test.ts
@@ -144,6 +144,11 @@ vi.mock('@/utils/formatUtil', () => ({
     appendJsonExtMock(...args)
 }))
 
+const canAttemptTaskInspectionMock = vi.hoisted(() => vi.fn(() => false))
+vi.mock('@/utils/inspectionTarget', () => ({
+  canAttemptTaskInspection: canAttemptTaskInspectionMock
+}))
+
 import { useJobMenu } from '@/composables/queue/useJobMenu'
 import type { ComfyNodeDefImpl } from '@/stores/nodeDefStore'
 import type { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
@@ -210,6 +215,7 @@ describe('useJobMenu', () => {
     }
     // Default: no workflow available via lazy loading
     getJobWorkflowMock.mockResolvedValue(undefined)
+    canAttemptTaskInspectionMock.mockReturnValue(false)
   })
 
   const setCurrentItem = (item: JobListItem | null) => {
@@ -739,6 +745,7 @@ describe('useJobMenu', () => {
 
   it('provides completed menu structure with delete option', async () => {
     const inspectSpy = vi.fn()
+    canAttemptTaskInspectionMock.mockReturnValue(true)
     const { jobMenuEntries } = mountJobMenu(inspectSpy)
     setCurrentItem(
       createJobItem({
@@ -776,6 +783,29 @@ describe('useJobMenu', () => {
     expect(inspectSpy).toHaveBeenCalledWith(currentItem.value)
   })
 
+  it('disables inspect when completed asset has no inspection target', async () => {
+    const inspectSpy = vi.fn()
+    const { jobMenuEntries } = mountJobMenu(inspectSpy)
+    setCurrentItem(
+      createJobItem({
+        state: 'completed',
+        taskRef: { previewOutput: {} }
+      })
+    )
+
+    await nextTick()
+
+    expect(
+      findActionEntry(jobMenuEntries.value, 'inspect-asset')?.disabled
+    ).toBe(true)
+    expect(
+      findActionEntry(jobMenuEntries.value, 'add-to-current')?.disabled
+    ).toBe(false)
+    expect(findActionEntry(jobMenuEntries.value, 'download')?.disabled).toBe(
+      false
+    )
+  })
+
   it('omits inspect handler when callback missing', async () => {
     const { jobMenuEntries } = mountJobMenu()
     setCurrentItem(
diff --git a/src/composables/queue/useJobMenu.ts b/src/composables/queue/useJobMenu.ts
index 34bfb2b4cc..5818b40b05 100644
--- a/src/composables/queue/useJobMenu.ts
+++ b/src/composables/queue/useJobMenu.ts
@@ -22,6 +22,7 @@ import { useQueueStore } from '@/stores/queueStore'
 import type { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
 import { createAnnotatedPath } from '@/utils/createAnnotatedPath'
 import { appendJsonExt } from '@/utils/formatUtil'
+import { canAttemptTaskInspection } from '@/utils/inspectionTarget'
 
 export type MenuEntry =
   | {
@@ -249,13 +250,16 @@ export function useJobMenu(
     const state = item?.state
     if (!state) return []
     const hasPreviewAsset = !!item?.taskRef?.previewOutput
+    const canInspectAsset = item?.taskRef
+      ? canAttemptTaskInspection(item.taskRef)
+      : false
     if (state === 'completed') {
       return [
         {
           key: 'inspect-asset',
           label: st('queue.jobMenu.inspectAsset', 'Inspect asset'),
           icon: 'icon-[lucide--zoom-in]',
-          disabled: !hasPreviewAsset || !onInspectAsset,
+          disabled: !canInspectAsset || !onInspectAsset,
           onClick: onInspectAsset
             ? () => {
                 const item = currentMenuItem()
diff --git a/src/composables/queue/useResultGallery.test.ts b/src/composables/queue/useResultGallery.test.ts
index 8b8522a79d..129be61371 100644
--- a/src/composables/queue/useResultGallery.test.ts
+++ b/src/composables/queue/useResultGallery.test.ts
@@ -7,19 +7,18 @@ import type { JobListItem } from '@/platform/remote/comfyui/jobs/jobTypes'
 import { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
 
 const createResultItem = (
-  url: string,
-  supportsPreview = true
+  filename: string,
+  mediaType: string = 'images'
 ): ResultItemImpl => {
   const item = new ResultItemImpl({
-    filename: url,
+    filename,
     subfolder: '',
     type: 'output',
     nodeId: 'node-1',
-    mediaType: supportsPreview ? 'images' : 'unknown'
+    mediaType
   })
   // Override url getter for test matching
-  Object.defineProperty(item, 'url', { get: () => url })
-  Object.defineProperty(item, 'supportsPreview', { get: () => supportsPreview })
+  Object.defineProperty(item, 'url', { get: () => filename })
   return item
 }
 
@@ -63,13 +62,16 @@ describe('useResultGallery', () => {
     setActivePinia(createPinia())
   })
 
-  it('collects only previewable outputs and preserves their order', async () => {
-    const previewable = [createResultItem('p-1'), createResultItem('p-2')]
-    const nonPreviewable = createResultItem('skip-me', false)
+  it('falls back to all lightbox outputs and preserves their order', async () => {
+    const lightboxOutputs = [
+      createResultItem('p-1.png'),
+      createResultItem('p-2.png')
+    ]
+    const nonLightbox = createResultItem('skip-me.bin', 'unknown')
     const tasks = [
-      createTask(previewable[0]),
-      createTask(nonPreviewable),
-      createTask(previewable[1]),
+      createTask(lightboxOutputs[0]),
+      createTask(nonLightbox),
+      createTask(lightboxOutputs[1]),
       createTask()
     ]
 
@@ -77,13 +79,13 @@ describe('useResultGallery', () => {
       () => tasks
     )
 
-    await onViewItem(createJobViewItem('job-1', tasks[0]))
+    await onViewItem(createJobViewItem('job-1'))
 
-    expect(galleryItems.value).toEqual([previewable[0]])
+    expect(galleryItems.value).toEqual(lightboxOutputs)
     expect(galleryActiveIndex.value).toBe(0)
   })
 
-  it('does not change state when there are no previewable tasks', async () => {
+  it('does not change state when there are no lightbox tasks', async () => {
     const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
       () => []
     )
@@ -94,13 +96,13 @@ describe('useResultGallery', () => {
     expect(galleryActiveIndex.value).toBe(-1)
   })
 
-  it('activates the index that matches the viewed preview URL', async () => {
-    const previewable = [
-      createResultItem('p-1'),
-      createResultItem('p-2'),
-      createResultItem('p-3')
+  it('activates the inspected task output in the lightbox', async () => {
+    const lightboxOutputs = [
+      createResultItem('p-1.png'),
+      createResultItem('p-2.png'),
+      createResultItem('p-3.png')
     ]
-    const tasks = previewable.map((preview) => createTask(preview))
+    const tasks = lightboxOutputs.map((output) => createTask(output))
 
     const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
       () => tasks
@@ -108,13 +110,16 @@ describe('useResultGallery', () => {
 
     await onViewItem(createJobViewItem('job-2', tasks[1]))
 
-    expect(galleryItems.value).toEqual([previewable[1]])
+    expect(galleryItems.value).toEqual([lightboxOutputs[1]])
     expect(galleryActiveIndex.value).toBe(0)
   })
 
-  it('defaults to the first entry when the clicked job lacks a preview', async () => {
-    const previewable = [createResultItem('p-1'), createResultItem('p-2')]
-    const tasks = previewable.map((preview) => createTask(preview))
+  it('defaults to the first entry when the clicked job lacks a task ref', async () => {
+    const lightboxOutputs = [
+      createResultItem('p-1.png'),
+      createResultItem('p-2.png')
+    ]
+    const tasks = lightboxOutputs.map((output) => createTask(output))
 
     const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
       () => tasks
@@ -122,33 +127,92 @@ describe('useResultGallery', () => {
 
     await onViewItem(createJobViewItem('job-no-preview'))
 
-    expect(galleryItems.value).toEqual(previewable)
+    expect(galleryItems.value).toEqual(lightboxOutputs)
     expect(galleryActiveIndex.value).toBe(0)
   })
 
-  it('defaults to the first entry when no gallery item matches the preview URL', async () => {
-    const previewable = [createResultItem('p-1'), createResultItem('p-2')]
-    const tasks = previewable.map((preview) => createTask(preview))
+  it('defaults to the first entry when no gallery item matches the lightbox URL', async () => {
+    const lightboxOutputs = [
+      createResultItem('p-1.png'),
+      createResultItem('p-2.png')
+    ]
+    const tasks = lightboxOutputs.map((output) => createTask(output))
 
     const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
       () => tasks
     )
 
-    const taskWithMismatchedPreview = createTask(createResultItem('missing'))
+    const taskWithMismatchedOutput = createTask(createResultItem('missing.png'))
     await onViewItem(
-      createJobViewItem('job-mismatch', taskWithMismatchedPreview)
+      createJobViewItem('job-mismatch', taskWithMismatchedOutput)
     )
 
-    expect(galleryItems.value).toEqual([createResultItem('missing')])
+    expect(galleryItems.value).toEqual([createResultItem('missing.png')])
     expect(galleryActiveIndex.value).toBe(0)
   })
 
+  it('does not open for surfaced outputs that are not inspection targets', async () => {
+    const nonLoadable3D = new ResultItemImpl({
+      filename: 'asset.usdz',
+      subfolder: '',
+      type: 'output',
+      nodeId: 'node-1',
+      mediaType: '3D'
+    })
+    const task = createTask(nonLoadable3D)
+
+    const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
+      () => [task]
+    )
+
+    await onViewItem(createJobViewItem('job-usdz', task))
+
+    expect(galleryItems.value).toEqual([])
+    expect(galleryActiveIndex.value).toBe(-1)
+  })
+
+  it('does not open lightbox for load3d targets', async () => {
+    const load3d = new ResultItemImpl({
+      filename: 'model.ply',
+      subfolder: '',
+      type: 'output',
+      nodeId: 'node-1',
+      mediaType: '3D'
+    })
+    const task = createTask(load3d)
+
+    const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
+      () => [task]
+    )
+
+    await onViewItem(createJobViewItem('job-ply', task))
+
+    expect(galleryItems.value).toEqual([])
+    expect(galleryActiveIndex.value).toBe(-1)
+  })
+
+  it('does not fall back to unrelated outputs when target task has no lightbox target', async () => {
+    const lightboxOutput = createResultItem('lightbox.png')
+    const nonLightbox = createResultItem('not-lightbox.bin', 'unknown')
+    const lightboxTask = createTask(lightboxOutput)
+    const nonLightboxTask = createTask(nonLightbox)
+
+    const { galleryItems, galleryActiveIndex, onViewItem } = useResultGallery(
+      () => [lightboxTask, nonLightboxTask]
+    )
+
+    await onViewItem(createJobViewItem('job-not-lightbox', nonLightboxTask))
+
+    expect(galleryItems.value).toEqual([])
+    expect(galleryActiveIndex.value).toBe(-1)
+  })
+
   it('loads full outputs when task has only preview outputs', async () => {
-    const previewOutput = createResultItem('preview-1')
+    const previewOutput = createResultItem('preview-1.png')
     const fullOutputs = [
-      createResultItem('full-1'),
-      createResultItem('full-2'),
-      createResultItem('full-3')
+      createResultItem('full-1.png'),
+      createResultItem('full-2.png'),
+      createResultItem('full-3.png')
     ]
 
     // Create a task with outputsCount > 1 to trigger lazy loading
@@ -166,6 +230,6 @@ describe('useResultGallery', () => {
     await onViewItem(createJobViewItem('job-1', task))
 
     expect(galleryItems.value).toEqual(fullOutputs)
-    expect(galleryActiveIndex.value).toBe(0)
+    expect(galleryActiveIndex.value).toBe(2)
   })
 })
diff --git a/src/composables/queue/useResultGallery.ts b/src/composables/queue/useResultGallery.ts
index 44c6a607dd..f90caec124 100644
--- a/src/composables/queue/useResultGallery.ts
+++ b/src/composables/queue/useResultGallery.ts
@@ -1,8 +1,16 @@
 import { ref, shallowRef } from 'vue'
 
 import type { JobListItem } from '@/composables/queue/useJobList'
-import { findActiveIndex, getOutputsForTask } from '@/services/jobOutputCache'
+import {
+  findActiveIndex,
+  getInspectionTargetsForTask
+} from '@/services/jobOutputCache'
 import type { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
+import {
+  getInspectionTarget,
+  getLightboxOutputs,
+  getPreferredInspectionTarget
+} from '@/utils/inspectionTarget'
 
 /**
  * Manages result gallery state and activation for queue items.
@@ -16,19 +24,35 @@ export function useResultGallery(getFilteredTasks: () => TaskItemImpl[]) {
     if (!tasks.length) return
 
     const targetTask = item.taskRef
-    const targetOutputs = targetTask
-      ? await getOutputsForTask(targetTask)
+    const targets = targetTask
+      ? await getInspectionTargetsForTask(targetTask)
       : null
 
-    // Request was superseded by a newer one
-    if (targetOutputs === null && targetTask) return
+    if (targetTask) {
+      // Request was superseded by a newer one
+      if (targets === null) return
 
-    // Use target's outputs if available, otherwise fall back to all previews
-    const items = targetOutputs?.length
-      ? targetOutputs
-      : tasks
-          .map((t) => t.previewOutput)
-          .filter((o): o is ResultItemImpl => !!o)
+      const targetOutputs = getLightboxOutputs(targets)
+      if (!targetOutputs.length) return
+
+      galleryItems.value = targetOutputs
+      const preferredTarget = getPreferredInspectionTarget(
+        targets.filter((target) => target.kind === 'lightbox')
+      )
+      galleryActiveIndex.value = findActiveIndex(
+        targetOutputs,
+        preferredTarget?.output.url
+      )
+      return
+    }
+
+    const items = tasks.flatMap((task) => {
+      const preview = task.previewOutput
+      if (!preview) return []
+
+      const target = getInspectionTarget(preview)
+      return target?.kind === 'lightbox' ? [target.output] : []
+    })
 
     if (!items.length) return
 
diff --git a/src/composables/useLoad3dViewerDialog.ts b/src/composables/useLoad3dViewerDialog.ts
new file mode 100644
index 0000000000..f064ebfd80
--- /dev/null
+++ b/src/composables/useLoad3dViewerDialog.ts
@@ -0,0 +1,34 @@
+import { defineAsyncComponent } from 'vue'
+
+import { useDialogStore } from '@/stores/dialogStore'
+
+const Load3dViewerContent = defineAsyncComponent(
+  () => import('@/components/load3d/Load3dViewerContent.vue')
+)
+
+export function useLoad3dViewerDialog() {
+  const dialogStore = useDialogStore()
+
+  function openLoad3dViewer({
+    title,
+    modelUrl
+  }: {
+    title: string
+    modelUrl: string
+  }) {
+    dialogStore.showDialog({
+      key: 'asset-3d-viewer',
+      title,
+      component: Load3dViewerContent,
+      props: {
+        modelUrl
+      },
+      dialogComponentProps: {
+        style: 'width: 80vw; height: 80vh;',
+        maximizable: true
+      }
+    })
+  }
+
+  return { openLoad3dViewer }
+}
diff --git a/src/extensions/core/load3d/constants.ts b/src/extensions/core/load3d/constants.ts
index 08898e1860..f664faf7be 100644
--- a/src/extensions/core/load3d/constants.ts
+++ b/src/extensions/core/load3d/constants.ts
@@ -3,17 +3,11 @@
  * This file can be imported without pulling in the entire THREE.js bundle
  */
 
-export const SUPPORTED_EXTENSIONS = new Set([
-  '.gltf',
-  '.glb',
-  '.obj',
-  '.fbx',
-  '.stl',
-  '.spz',
-  '.splat',
-  '.ply',
-  '.ksplat'
-])
+import { THREE_D_LOADABLE_EXTENSIONS } from '@comfyorg/shared-frontend-utils/mediaExtensions'
+
+export const SUPPORTED_EXTENSIONS = new Set(
+  THREE_D_LOADABLE_EXTENSIONS.map((extension) => `.${extension}`)
+)
 
 export const SUPPORTED_EXTENSIONS_ACCEPT = [...SUPPORTED_EXTENSIONS].join(',')
 
diff --git a/src/platform/assets/components/MediaAssetCard.vue b/src/platform/assets/components/MediaAssetCard.vue
index f9bedbebea..a98111c249 100644
--- a/src/platform/assets/components/MediaAssetCard.vue
+++ b/src/platform/assets/components/MediaAssetCard.vue
@@ -150,9 +150,9 @@ import {
   formatDuration,
   formatSize,
   getFilenameDetails,
-  getMediaTypeFromFilename,
-  isPreviewableMediaType
+  getMediaTypeFromFilename
 } from '@/utils/formatUtil'
+import { getInspectionKindForFilename } from '@/utils/inspectionTarget'
 
 import { getAssetType } from '../composables/media/assetMappers'
 import { getAssetUrl } from '../utils/assetUrlUtil'
@@ -228,7 +228,7 @@ const previewKind = computed((): PreviewKind => {
   return getMediaTypeFromFilename(asset?.name || '')
 })
 
-const canInspect = computed(() => isPreviewableMediaType(fileKind.value))
+const canInspect = computed(() => !!getInspectionKindForFilename(asset?.name))
 
 // Get filename without extension
 const fileName = computed(() => {
diff --git a/src/platform/assets/components/MediaAssetContextMenu.test.ts b/src/platform/assets/components/MediaAssetContextMenu.test.ts
index 7784366537..20f8486f8c 100644
--- a/src/platform/assets/components/MediaAssetContextMenu.test.ts
+++ b/src/platform/assets/components/MediaAssetContextMenu.test.ts
@@ -21,8 +21,12 @@ vi.mock('@/platform/workflow/utils/workflowExtractionUtil', () => ({
   supportsWorkflowMetadata: () => true
 }))
 
-vi.mock('@/utils/formatUtil', () => ({
-  isPreviewableMediaType: () => true
+const getInspectionKindForFilenameMock = vi.hoisted(() =>
+  vi.fn<() => 'lightbox' | 'load3d' | null>(() => 'lightbox')
+)
+
+vi.mock('@/utils/inspectionTarget', () => ({
+  getInspectionKindForFilename: getInspectionKindForFilenameMock
 }))
 
 vi.mock('@/utils/loaderNodeUtil', () => ({
@@ -118,7 +122,7 @@ function mountComponent() {
         return { menuRef, asset, onHide }
       },
       template:
-        '<MediaAssetContextMenu ref="menuRef" :asset="asset" asset-type="output" file-kind="image" @hide="onHide" />'
+        '<MediaAssetContextMenu ref="menuRef" :asset="asset" asset-type="output" @hide="onHide" />'
     }),
     {
       global: {
@@ -198,4 +202,18 @@ describe('MediaAssetContextMenu', () => {
 
     unmount()
   })
+
+  it('hides Inspect when the filename has no inspection target', async () => {
+    getInspectionKindForFilenameMock.mockReturnValueOnce(null)
+    const { container, unmount } = mountComponent()
+    await showMenu(container)
+
+    expect(
+      capturedMenu.model.some(
+        (item) => item.label === 'mediaAsset.actions.inspect'
+      )
+    ).toBe(false)
+
+    unmount()
+  })
 })
diff --git a/src/platform/assets/components/MediaAssetContextMenu.vue b/src/platform/assets/components/MediaAssetContextMenu.vue
index 89a45b302b..ea3d437f30 100644
--- a/src/platform/assets/components/MediaAssetContextMenu.vue
+++ b/src/platform/assets/components/MediaAssetContextMenu.vue
@@ -39,29 +39,22 @@ import Button from '@/components/ui/button/Button.vue'
 import { useDismissableOverlay } from '@/composables/useDismissableOverlay'
 import { isCloud } from '@/platform/distribution/types'
 import { supportsWorkflowMetadata } from '@/platform/workflow/utils/workflowExtractionUtil'
-import { isPreviewableMediaType } from '@/utils/formatUtil'
+import { getInspectionKindForFilename } from '@/utils/inspectionTarget'
 import { detectNodeTypeFromFilename } from '@/utils/loaderNodeUtil'
 import { cn } from '@comfyorg/tailwind-utils'
 
 import { useMediaAssetActions } from '../composables/useMediaAssetActions'
 import type { AssetItem } from '../schemas/assetSchema'
-import type { AssetContext, MediaKind } from '../schemas/mediaAssetSchema'
+import type { AssetContext } from '../schemas/mediaAssetSchema'
 
-const {
-  asset,
-  assetType,
-  fileKind,
-  showDeleteButton,
-  selectedAssets,
-  isBulkMode
-} = defineProps<{
-  asset: AssetItem
-  assetType: AssetContext['type']
-  fileKind: MediaKind
-  showDeleteButton?: boolean
-  selectedAssets?: AssetItem[]
-  isBulkMode?: boolean
-}>()
+const { asset, assetType, showDeleteButton, selectedAssets, isBulkMode } =
+  defineProps<{
+    asset: AssetItem
+    assetType: AssetContext['type']
+    showDeleteButton?: boolean
+    selectedAssets?: AssetItem[]
+    isBulkMode?: boolean
+  }>()
 
 const emit = defineEmits<{
   zoom: []
@@ -196,7 +189,7 @@ const contextMenuItems = computed<MenuItem[]>(() => {
   // Individual mode: Show all menu options
 
   // Inspect
-  if (isPreviewableMediaType(fileKind)) {
+  if (getInspectionKindForFilename(asset.name)) {
     items.push({
       label: t('mediaAsset.actions.inspect'),
       icon: 'icon-[lucide--zoom-in]',
diff --git a/src/services/jobOutputCache.test.ts b/src/services/jobOutputCache.test.ts
index 292e96e07b..6ab9897ca9 100644
--- a/src/services/jobOutputCache.test.ts
+++ b/src/services/jobOutputCache.test.ts
@@ -9,9 +9,9 @@ import type {
 import type { ComfyWorkflowJSON } from '@/platform/workflow/validation/schemas/workflowSchema'
 import {
   findActiveIndex,
+  getInspectionTargetsForTask,
   getJobDetail,
-  getJobWorkflow,
-  getOutputsForTask
+  getJobWorkflow
 } from '@/services/jobOutputCache'
 import { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
 
@@ -29,16 +29,18 @@ vi.mock('@/scripts/api', () => ({
   }
 }))
 
-function createResultItem(url: string, supportsPreview = true): ResultItemImpl {
+function createResultItem(
+  filename: string,
+  mediaType: string = 'images'
+): ResultItemImpl {
   const item = new ResultItemImpl({
-    filename: url,
+    filename,
     subfolder: '',
     type: 'output',
     nodeId: 'node-1',
-    mediaType: supportsPreview ? 'images' : 'unknown'
+    mediaType
   })
-  Object.defineProperty(item, 'url', { get: () => url })
-  Object.defineProperty(item, 'supportsPreview', { get: () => supportsPreview })
+  Object.defineProperty(item, 'url', { get: () => filename })
   return item
 }
 
@@ -101,21 +103,46 @@ describe('jobOutputCache', () => {
     })
   })
 
-  describe('getOutputsForTask', () => {
-    it('returns previewable outputs directly when no lazy load needed', async () => {
-      const outputs = [createResultItem('p-1'), createResultItem('p-2')]
+  describe('getInspectionTargetsForTask', () => {
+    it('returns inspection targets directly when no lazy load needed', async () => {
+      const outputs = [createResultItem('p-1.png'), createResultItem('p-2.png')]
       const task = createTask(undefined, outputs, 1)
 
-      const result = await getOutputsForTask(task)
+      const result = await getInspectionTargetsForTask(task)
 
-      expect(result).toEqual(outputs)
+      expect(result).toEqual([
+        { kind: 'lightbox', output: outputs[0] },
+        { kind: 'lightbox', output: outputs[1] }
+      ])
+    })
+
+    it('routes loadable 3D outputs without treating all 3D as inspection targets', async () => {
+      const loadable3D = new ResultItemImpl({
+        filename: 'scan.ply',
+        subfolder: '',
+        type: 'output',
+        nodeId: 'node-1',
+        mediaType: '3D'
+      })
+      const nonLoadable3D = new ResultItemImpl({
+        filename: 'asset.usdz',
+        subfolder: '',
+        type: 'output',
+        nodeId: 'node-1',
+        mediaType: 'images'
+      })
+      const task = createTask(undefined, [loadable3D, nonLoadable3D], 1)
+
+      const result = await getInspectionTargetsForTask(task)
+
+      expect(result).toEqual([{ kind: 'load3d', output: loadable3D }])
     })
 
     it('lazy loads when outputsCount > 1', async () => {
-      const previewOutput = createResultItem('preview')
+      const previewOutput = createResultItem('preview.png')
       const fullOutputs = [
-        createResultItem('full-1'),
-        createResultItem('full-2')
+        createResultItem('full-1.png'),
+        createResultItem('full-2.png')
       ]
 
       const job = createMockJob(uniqueId('task'), 3)
@@ -123,31 +150,31 @@ describe('jobOutputCache', () => {
       const loadedTask = new TaskItemImpl(job, {}, fullOutputs)
       task.loadFullOutputs = vi.fn().mockResolvedValue(loadedTask)
 
-      const result = await getOutputsForTask(task)
+      const result = await getInspectionTargetsForTask(task)
 
-      expect(result).toEqual(fullOutputs)
+      expect(result?.map((target) => target.output)).toEqual(fullOutputs)
       expect(task.loadFullOutputs).toHaveBeenCalled()
     })
 
     it('caches loaded tasks', async () => {
-      const fullOutputs = [createResultItem('full-1')]
+      const fullOutputs = [createResultItem('full-1.png')]
 
       const job = createMockJob(uniqueId('task'), 3)
-      const task = new TaskItemImpl(job, {}, [createResultItem('preview')])
+      const task = new TaskItemImpl(job, {}, [createResultItem('preview.png')])
       const loadedTask = new TaskItemImpl(job, {}, fullOutputs)
       task.loadFullOutputs = vi.fn().mockResolvedValue(loadedTask)
 
       // First call should load
-      await getOutputsForTask(task)
+      await getInspectionTargetsForTask(task)
       expect(task.loadFullOutputs).toHaveBeenCalledTimes(1)
 
       // Second call should use cache
-      await getOutputsForTask(task)
+      await getInspectionTargetsForTask(task)
       expect(task.loadFullOutputs).toHaveBeenCalledTimes(1)
     })
 
-    it('falls back to preview outputs on load error', async () => {
-      const previewOutput = createResultItem('preview')
+    it('falls back to current outputs on load error', async () => {
+      const previewOutput = createResultItem('preview.png')
 
       const job = createMockJob(uniqueId('task'), 3)
       const task = new TaskItemImpl(job, {}, [previewOutput])
@@ -155,23 +182,27 @@ describe('jobOutputCache', () => {
         .fn()
         .mockRejectedValue(new Error('Network error'))
 
-      const result = await getOutputsForTask(task)
+      const result = await getInspectionTargetsForTask(task)
 
-      expect(result).toEqual([previewOutput])
+      expect(result?.map((target) => target.output)).toEqual([previewOutput])
     })
 
     it('returns null when request is superseded', async () => {
       const job1 = createMockJob(uniqueId('task'), 3)
       const job2 = createMockJob(uniqueId('task'), 3)
 
-      const task1 = new TaskItemImpl(job1, {}, [createResultItem('preview-1')])
-      const task2 = new TaskItemImpl(job2, {}, [createResultItem('preview-2')])
+      const task1 = new TaskItemImpl(job1, {}, [
+        createResultItem('preview-1.png')
+      ])
+      const task2 = new TaskItemImpl(job2, {}, [
+        createResultItem('preview-2.png')
+      ])
 
       const loadedTask1 = new TaskItemImpl(job1, {}, [
-        createResultItem('full-1')
+        createResultItem('full-1.png')
       ])
       const loadedTask2 = new TaskItemImpl(job2, {}, [
-        createResultItem('full-2')
+        createResultItem('full-2.png')
       ])
 
       // Task1 loads slowly, task2 loads quickly
@@ -184,14 +215,16 @@ describe('jobOutputCache', () => {
       task2.loadFullOutputs = vi.fn().mockResolvedValue(loadedTask2)
 
       // Start task1, then immediately start task2
-      const promise1 = getOutputsForTask(task1)
-      const promise2 = getOutputsForTask(task2)
+      const promise1 = getInspectionTargetsForTask(task1)
+      const promise2 = getInspectionTargetsForTask(task2)
 
       const [result1, result2] = await Promise.all([promise1, promise2])
 
       // Task2 should succeed, task1 should return null (superseded)
       expect(result1).toBeNull()
-      expect(result2).toEqual([createResultItem('full-2')])
+      expect(result2?.map((target) => target.output.filename)).toEqual([
+        'full-2.png'
+      ])
     })
   })
 
diff --git a/src/services/jobOutputCache.ts b/src/services/jobOutputCache.ts
index cd8386d550..2485b6e20a 100644
--- a/src/services/jobOutputCache.ts
+++ b/src/services/jobOutputCache.ts
@@ -3,7 +3,7 @@
  * @module services/jobOutputCache
  *
  * Centralizes job output and detail caching with LRU eviction.
- * Provides helpers for working with previewable outputs and workflows.
+ * Provides helpers for working with output inspection targets and workflows.
  */
 
 import QuickLRU from '@alloc/quick-lru'
@@ -16,6 +16,8 @@ import { api } from '@/scripts/api'
 import { ResultItemImpl } from '@/stores/queueStore'
 import type { TaskItemImpl } from '@/stores/queueStore'
 import { parseTaskOutput } from '@/stores/resultItemParsing'
+import { getInspectionTargets } from '@/utils/inspectionTarget'
+import type { InspectionTarget } from '@/utils/inspectionTarget'
 
 const MAX_TASK_CACHE_SIZE = 50
 const MAX_JOB_DETAIL_CACHE_SIZE = 50
@@ -39,13 +41,9 @@ export function findActiveIndex(
   return ResultItemImpl.findByUrl(items, url)
 }
 
-/**
- * Gets previewable outputs for a task, with lazy loading, caching, and request deduping.
- * Returns null if a newer request superseded this one while loading.
- */
-export async function getOutputsForTask(
+async function getTaskWithFullOutputs(
   task: TaskItemImpl
-): Promise<ResultItemImpl[] | null> {
+): Promise<TaskItemImpl | null> {
   const requestId = String(task.jobId)
   latestTaskRequestId = requestId
 
@@ -53,12 +51,12 @@ export async function getOutputsForTask(
   const needsLazyLoad = outputsCount > 1
 
   if (!needsLazyLoad) {
-    return [...task.previewableOutputs]
+    return task
   }
 
   const cached = taskCache.get(requestId)
   if (cached) {
-    return [...cached.previewableOutputs]
+    return cached
   }
 
   try {
@@ -70,13 +68,24 @@ export async function getOutputsForTask(
     }
 
     taskCache.set(requestId, loadedTask)
-    return [...loadedTask.previewableOutputs]
+    return loadedTask
   } catch (error) {
-    console.warn('Failed to load full outputs, using preview:', error)
-    return [...task.previewableOutputs]
+    console.warn('Failed to load full outputs, using current outputs:', error)
+    return task
   }
 }
 
+/**
+ * Gets inspection targets for a task, with lazy loading, caching, and request
+ * deduping. Returns null if a newer request superseded this one while loading.
+ */
+export async function getInspectionTargetsForTask(
+  task: TaskItemImpl
+): Promise<InspectionTarget[] | null> {
+  const sourceTask = await getTaskWithFullOutputs(task)
+  return sourceTask ? getInspectionTargets(sourceTask.flatOutputs) : null
+}
+
 function getPreviewableOutputs(outputs?: TaskOutput): ResultItemImpl[] {
   if (!outputs) return []
   return ResultItemImpl.filterPreviewable(parseTaskOutput(outputs))
diff --git a/src/stores/queueStore.test.ts b/src/stores/queueStore.test.ts
index 2f5a72611a..fa3d69f954 100644
--- a/src/stores/queueStore.test.ts
+++ b/src/stores/queueStore.test.ts
@@ -190,6 +190,48 @@ describe('TaskItemImpl', () => {
     })
   })
 
+  describe('3D media classification', () => {
+    it('surfaces loadable 3D outputs for display', () => {
+      const taskItem = new TaskItemImpl(createHistoryJob(0, 'job-id'), {
+        'node-1': {
+          '3D': [
+            {
+              filename: 'scan.ply',
+              type: 'output',
+              subfolder: ''
+            }
+          ]
+        }
+      })
+
+      const output = taskItem.flatOutputs[0]
+
+      expect(output.is3D).toBe(true)
+      expect(output.supportsPreview).toBe(true)
+      expect(taskItem.previewOutput).toBe(output)
+    })
+
+    it('surfaces non-loadable 3D outputs for display', () => {
+      const taskItem = new TaskItemImpl(createHistoryJob(0, 'job-id'), {
+        'node-1': {
+          images: [
+            {
+              filename: 'asset.usdz',
+              type: 'output',
+              subfolder: ''
+            }
+          ]
+        }
+      })
+
+      const output = taskItem.flatOutputs[0]
+
+      expect(output.is3D).toBe(true)
+      expect(output.supportsPreview).toBe(true)
+      expect(taskItem.previewOutput).toBe(output)
+    })
+  })
+
   it.skip('should parse text outputs', () => {
     const job: JobListItem = {
       ...createHistoryJob(0, 'text-job'),
diff --git a/src/stores/queueStore.ts b/src/stores/queueStore.ts
index d1a909fe09..4091ceb101 100644
--- a/src/stores/queueStore.ts
+++ b/src/stores/queueStore.ts
@@ -278,7 +278,7 @@ export class TaskItemImpl {
     return parseTaskOutput(this.outputs)
   }
 
-  /** All outputs that support preview (images, videos, audio, 3D, text) */
+  /** All surfaced outputs (images, videos, audio, 3D, text) */
   get previewableOutputs(): readonly ResultItemImpl[] {
     return ResultItemImpl.filterPreviewable(this.flatOutputs)
   }
diff --git a/src/utils/inspectionTarget.test.ts b/src/utils/inspectionTarget.test.ts
new file mode 100644
index 0000000000..96e5c91d6a
--- /dev/null
+++ b/src/utils/inspectionTarget.test.ts
@@ -0,0 +1,140 @@
+import { describe, expect, it } from 'vitest'
+
+import type { JobListItem } from '@/platform/remote/comfyui/jobs/jobTypes'
+import type { ResultItemType } from '@/schemas/apiSchema'
+import { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
+import {
+  canAttemptTaskInspection,
+  getInspectionKindForFilename,
+  getInspectionTarget,
+  getInspectionTargets,
+  getLightboxOutputs,
+  getPreferredInspectionTarget
+} from '@/utils/inspectionTarget'
+
+function createResultItem({
+  filename,
+  mediaType = 'images',
+  type = 'output',
+  format
+}: {
+  filename: string
+  mediaType?: string
+  type?: ResultItemType
+  format?: string
+}): ResultItemImpl {
+  return new ResultItemImpl({
+    filename,
+    subfolder: '',
+    type,
+    nodeId: 'node-1',
+    mediaType,
+    format
+  })
+}
+
+function createTask(
+  flatOutputs: ResultItemImpl[],
+  outputsCount = flatOutputs.length
+): TaskItemImpl {
+  const job: JobListItem = {
+    id: 'job-1',
+    status: 'completed',
+    create_time: 0,
+    priority: 0,
+    preview_output: null,
+    outputs_count: outputsCount
+  }
+  return new TaskItemImpl(job, {}, flatOutputs)
+}
+
+describe('inspectionTarget', () => {
+  it('routes image, video, and audio outputs to the lightbox', () => {
+    const image = createResultItem({ filename: 'image.png' })
+    const video = createResultItem({
+      filename: 'clip.webm',
+      mediaType: 'video'
+    })
+    const audio = createResultItem({
+      filename: 'recording',
+      mediaType: 'audio',
+      format: 'audio/wav'
+    })
+
+    expect(getInspectionTarget(image)).toEqual({
+      kind: 'lightbox',
+      output: image
+    })
+    expect(getInspectionTarget(video)).toEqual({
+      kind: 'lightbox',
+      output: video
+    })
+    expect(getInspectionTarget(audio)).toEqual({
+      kind: 'lightbox',
+      output: audio
+    })
+  })
+
+  it('routes loadable 3D outputs to load3d', () => {
+    const output = createResultItem({
+      filename: 'scan.ply',
+      mediaType: '3D'
+    })
+
+    expect(getInspectionTarget(output)).toEqual({
+      kind: 'load3d',
+      output
+    })
+  })
+
+  it('rejects non-loadable 3D outputs even when backend mediaType is stale', () => {
+    const output = createResultItem({
+      filename: 'asset.usdz',
+      mediaType: 'images'
+    })
+
+    expect(output.is3D).toBe(true)
+    expect(getInspectionTarget(output)).toBeNull()
+  })
+
+  it('filters inspection targets and lightbox outputs independently', () => {
+    const image = createResultItem({ filename: 'image.png' })
+    const model = createResultItem({ filename: 'model.ply', mediaType: '3D' })
+    const text = createResultItem({ filename: 'note.txt', mediaType: 'text' })
+
+    const targets = getInspectionTargets([image, model, text])
+
+    expect(targets).toEqual([
+      { kind: 'lightbox', output: image },
+      { kind: 'load3d', output: model }
+    ])
+    expect(getLightboxOutputs(targets)).toEqual([image])
+  })
+
+  it('prefers the last saved output target over temp targets', () => {
+    const temp = createResultItem({ filename: 'temp.png', type: 'temp' })
+    const firstOutput = createResultItem({ filename: 'first.png' })
+    const lastOutput = createResultItem({ filename: 'last.png' })
+
+    expect(
+      getPreferredInspectionTarget(
+        getInspectionTargets([temp, firstOutput, lastOutput])
+      )?.output
+    ).toBe(lastOutput)
+  })
+
+  it('exposes filename-level inspection kind for asset callers', () => {
+    expect(getInspectionKindForFilename('image.png')).toBe('lightbox')
+    expect(getInspectionKindForFilename('clip.mp4')).toBe('lightbox')
+    expect(getInspectionKindForFilename('recording.wav')).toBe('lightbox')
+    expect(getInspectionKindForFilename('scan.ply')).toBe('load3d')
+    expect(getInspectionKindForFilename('asset.usdz')).toBeNull()
+    expect(getInspectionKindForFilename('metadata.json')).toBeNull()
+  })
+
+  it('allows multi-output tasks to attempt inspection before full outputs load', () => {
+    const task = createTask([], 2)
+
+    expect(canAttemptTaskInspection(task)).toBe(true)
+  })
+})
diff --git a/src/utils/inspectionTarget.ts b/src/utils/inspectionTarget.ts
new file mode 100644
index 0000000000..5b9d204084
--- /dev/null
+++ b/src/utils/inspectionTarget.ts
@@ -0,0 +1,82 @@
+import { isThreeDLoadableExtension } from '@comfyorg/shared-frontend-utils/mediaExtensions'
+
+import type { ResultItemImpl, TaskItemImpl } from '@/stores/queueStore'
+import { getMediaTypeFromFilename } from '@/utils/formatUtil'
+
+type InspectionKind = 'lightbox' | 'load3d'
+
+export type InspectionTarget =
+  | { kind: 'lightbox'; output: ResultItemImpl }
+  | { kind: 'load3d'; output: ResultItemImpl }
+
+export function getInspectionTarget(
+  output: ResultItemImpl
+): InspectionTarget | null {
+  if (output.is3D) {
+    return getInspectionKindForFilename(output.filename) === 'load3d'
+      ? { kind: 'load3d', output }
+      : null
+  }
+
+  if (output.isImage || output.isVideo || output.isAudio) {
+    return { kind: 'lightbox', output }
+  }
+
+  return null
+}
+
+export function getInspectionTargets(
+  outputs: readonly ResultItemImpl[]
+): InspectionTarget[] {
+  return outputs.flatMap((output) => {
+    const target = getInspectionTarget(output)
+    return target ? [target] : []
+  })
+}
+
+export function getPreferredInspectionTarget(
+  targets: readonly InspectionTarget[]
+): InspectionTarget | undefined {
+  return (
+    targets.findLast((target) => target.output.type === 'output') ??
+    targets.at(-1)
+  )
+}
+
+export function getLightboxOutputs(
+  targets: readonly InspectionTarget[]
+): ResultItemImpl[] {
+  return targets.flatMap((target) =>
+    target.kind === 'lightbox' ? [target.output] : []
+  )
+}
+
+export function canAttemptTaskInspection(task: TaskItemImpl): boolean {
+  return (
+    getInspectionTargets(task.flatOutputs).length > 0 ||
+    (task.outputsCount ?? 0) > 1
+  )
+}
+
+export function getInspectionKindForFilename(
+  filename: string | null | undefined
+): InspectionKind | null {
+  const mediaType = getMediaTypeFromFilename(filename)
+  switch (mediaType) {
+    case 'image':
+    case 'video':
+    case 'audio':
+      return 'lightbox'
+    case '3D':
+      return isThreeDLoadableExtension(getFileExtension(filename))
+        ? 'load3d'
+        : null
+    default:
+      return null
+  }
+}
+
+function getFileExtension(filename: string | null | undefined): string | null {
+  if (!filename) return null
+  return filename.split('.').pop()?.toLowerCase() ?? null
+}