diff --git a/src/extensions/core/load3d/Load3dUtils.ts b/src/extensions/core/load3d/Load3dUtils.ts
index 6720838ce..dd5c15fba 100644
--- a/src/extensions/core/load3d/Load3dUtils.ts
+++ b/src/extensions/core/load3d/Load3dUtils.ts
@@ -42,7 +42,9 @@ class Load3dUtils {
     )
 
     if (!result.success || !result.response) {
-      const err = `Error uploading temp file: ${result.error}`
+      const err = t('toastMessages.tempUploadFailed', {
+        error: result.error || ''
+      })
       useToastStore().addAlert(err)
       throw new Error(err)
     }
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index 17f4b8268..938f7d6d7 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -1806,6 +1806,8 @@
     "pleaseSelectNodesToGroup": "Please select the nodes (or other groups) to create a group for",
     "emptyCanvas": "Empty canvas",
     "fileUploadFailed": "File upload failed",
+    "uploadFailed": "Upload failed",
+    "tempUploadFailed": "Error uploading temp file: {error}",
     "fileTooLarge": "File too large ({size} MB). Maximum supported size is {maxSize} MB",
     "unableToGetModelFilePath": "Unable to get model file path",
     "couldNotDetermineFileType": "Could not determine file type",
diff --git a/src/platform/assets/services/uploadService.test.ts b/src/platform/assets/services/uploadService.test.ts
index 83f708398..b3e523d25 100644
--- a/src/platform/assets/services/uploadService.test.ts
+++ b/src/platform/assets/services/uploadService.test.ts
@@ -26,7 +26,9 @@ describe('uploadService', () => {
         })
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       const result = await uploadMedia({ source: mockFile })
 
@@ -46,7 +48,9 @@ describe('uploadService', () => {
         })
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       const result = await uploadMedia({ source: mockBlob })
 
@@ -68,7 +72,9 @@ describe('uploadService', () => {
         })
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       try {
         const result = await uploadMedia({ source: dataURL })
@@ -94,7 +100,9 @@ describe('uploadService', () => {
         json: vi.fn().mockResolvedValue({ name: 'test.png' })
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       await uploadMedia(
         { source: mockFile },
@@ -131,7 +139,9 @@ describe('uploadService', () => {
         statusText: 'Internal Server Error'
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       const result = await uploadMedia({ source: mockFile })
 
@@ -157,7 +167,9 @@ describe('uploadService', () => {
         json: vi.fn().mockResolvedValue({ name: 'mask.png' })
       }
 
-      vi.mocked(api.fetchApi).mockResolvedValue(mockResponse as any)
+      vi.mocked(api.fetchApi).mockResolvedValue(
+        mockResponse as Partial<Response> as Response
+      )
 
       const originalRef = {
         filename: 'original.png',
@@ -194,8 +206,8 @@ describe('uploadService', () => {
       }
 
       vi.mocked(api.fetchApi)
-        .mockResolvedValueOnce(mockResponse1 as any)
-        .mockResolvedValueOnce(mockResponse2 as any)
+        .mockResolvedValueOnce(mockResponse1 as Partial<Response> as Response)
+        .mockResolvedValueOnce(mockResponse2 as Partial<Response> as Response)
 
       const results = await uploadMediaBatch(
         mockFiles.map((source) => ({ source }))
diff --git a/src/platform/assets/services/uploadService.ts b/src/platform/assets/services/uploadService.ts
index 72f638969..7b020c7db 100644
--- a/src/platform/assets/services/uploadService.ts
+++ b/src/platform/assets/services/uploadService.ts
@@ -51,7 +51,7 @@ async function convertToFile(
 
   // dataURL string
   if (!isDataURL(source)) {
-    throw new Error(`Invalid data URL: ${source.substring(0, 50)}...`)
+    throw new Error('Invalid data URL')
   }
 
   try {
diff --git a/src/renderer/extensions/vueNodes/widgets/components/WidgetSelectDropdown.vue b/src/renderer/extensions/vueNodes/widgets/components/WidgetSelectDropdown.vue
index 267464635..3b20990f2 100644
--- a/src/renderer/extensions/vueNodes/widgets/components/WidgetSelectDropdown.vue
+++ b/src/renderer/extensions/vueNodes/widgets/components/WidgetSelectDropdown.vue
@@ -4,7 +4,7 @@ import { computed, provide, ref, toRef, watch } from 'vue'
 
 import { useTransformCompatOverlayProps } from '@/composables/useTransformCompatOverlayProps'
 import { t } from '@/i18n'
-import { uploadMedia } from '@/platform/assets/services/uploadService'
+import { uploadMediaBatch } from '@/platform/assets/services/uploadService'
 import { useToastStore } from '@/platform/updates/common/toastStore'
 import FormDropdown from '@/renderer/extensions/vueNodes/widgets/components/form/dropdown/FormDropdown.vue'
 import { AssetKindKey } from '@/renderer/extensions/vueNodes/widgets/components/form/dropdown/types'
@@ -307,29 +307,30 @@ function updateSelectedItems(selectedItems: Set<SelectedKey>) {
   modelValue.value = name
 }
 
-// Handle multiple file uploads using shared uploadMedia service
+// Handle multiple file uploads using shared uploadMediaBatch service
 const uploadFiles = async (files: File[]): Promise<string[]> => {
   const folder = props.uploadFolder ?? 'input'
   const assetsStore = useAssetsStore()
 
-  const uploadPromises = files.map(async (file) => {
-    const result = await uploadMedia({ source: file }, { type: folder })
+  const results = await uploadMediaBatch(
+    files.map((file) => ({ source: file })),
+    { type: folder }
+  )
 
-    if (!result.success) {
-      toastStore.addAlert(result.error || 'Upload failed')
-      return null
-    }
+  // Report failed uploads
+  const failedUploads = results.filter((r) => !r.success)
+  for (const failed of failedUploads) {
+    toastStore.addAlert(failed.error || t('toastMessages.uploadFailed'))
+  }
 
-    // Update AssetsStore when uploading to input folder
-    if (folder === 'input') {
-      await assetsStore.updateInputs()
-    }
+  // Update AssetsStore once after all uploads complete (not per-file)
+  const successfulPaths = results.filter((r) => r.success).map((r) => r.path)
 
-    return result.path
-  })
+  if (folder === 'input' && successfulPaths.length > 0) {
+    await assetsStore.updateInputs()
+  }
 
-  const results = await Promise.all(uploadPromises)
-  return results.filter((path): path is string => path !== null)
+  return successfulPaths
 }
 
 async function handleFilesUpdate(files: File[]) {
@@ -340,7 +341,7 @@ async function handleFilesUpdate(files: File[]) {
     const uploadedPaths = await uploadFiles(files)
 
     if (uploadedPaths.length === 0) {
-      toastStore.addAlert('File upload failed')
+      toastStore.addAlert(t('toastMessages.uploadFailed'))
       return
     }