diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/index.ts b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/index.ts
index abd21345589..cee9841d8e6 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/index.ts
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/index.ts
@@ -18,3 +18,4 @@ export { useWorkflowOperations } from './use-workflow-operations'
 export { useWorkflowSelection } from './use-workflow-selection'
 export { useWorkspaceLogoUpload } from './use-workspace-logo-upload'
 export { useWorkspaceManagement } from './use-workspace-management'
+export { WORKSPACE_LOGO_ACCEPT_ATTRIBUTE } from './workspace-logo-file'
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/use-workspace-logo-upload.ts b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/use-workspace-logo-upload.ts
index a902e2f18bb..2cc1e3c0ead 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/use-workspace-logo-upload.ts
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/use-workspace-logo-upload.ts
@@ -2,10 +2,9 @@ import { useCallback, useEffect, useRef, useState } from 'react'
 import { createLogger } from '@sim/logger'
 import { getErrorMessage } from '@sim/utils/errors'
 import { uploadInternalFileSession } from '@/lib/uploads/client/session-upload'
+import { validateWorkspaceLogoFile } from '@/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file'
 
 const logger = createLogger('WorkspaceLogoUpload')
-const MAX_FILE_SIZE = 5 * 1024 * 1024 // 5MB
-const ACCEPTED_IMAGE_TYPES = ['image/png', 'image/jpeg', 'image/jpg', 'image/svg+xml', 'image/webp']
 
 interface UseWorkspaceLogoUploadProps {
   workspaceId?: string
@@ -51,16 +50,6 @@ export function useWorkspaceLogoUpload({
     setPreviewUrl(currentLogoUrl || null)
   }, [currentLogoUrl])
 
-  const validateFile = useCallback((file: File): string | null => {
-    if (file.size > MAX_FILE_SIZE) {
-      return `File "${file.name}" is too large. Maximum size is 5MB.`
-    }
-    if (!ACCEPTED_IMAGE_TYPES.includes(file.type)) {
-      return `File "${file.name}" is not a supported image format. Please use PNG, JPEG, SVG, or WebP.`
-    }
-    return null
-  }, [])
-
   const uploadFileToServer = useCallback(async (file: File): Promise<string> => {
     const targetWorkspaceId = workspaceIdRef.current
     if (!targetWorkspaceId) {
@@ -78,7 +67,7 @@ export function useWorkspaceLogoUpload({
 
   const processFile = useCallback(
     async (file: File) => {
-      const validationError = validateFile(file)
+      const validationError = validateWorkspaceLogoFile(file)
       if (validationError) {
         onErrorRef.current?.(validationError)
         return
@@ -106,7 +95,7 @@ export function useWorkspaceLogoUpload({
         setIsUploading(false)
       }
     },
-    [uploadFileToServer, validateFile]
+    [uploadFileToServer]
   )
 
   const handleFileChange = useCallback(
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.test.ts b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.test.ts
new file mode 100644
index 00000000000..888fe0b2bac
--- /dev/null
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.test.ts
@@ -0,0 +1,33 @@
+import { describe, expect, it } from 'vitest'
+import {
+  validateWorkspaceLogoFile,
+  WORKSPACE_LOGO_ACCEPT_ATTRIBUTE,
+} from '@/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file'
+
+function file(overrides: Partial<Pick<File, 'name' | 'size' | 'type'>> = {}) {
+  return {
+    name: 'logo.png',
+    size: 1024,
+    type: 'image/png',
+    ...overrides,
+  }
+}
+
+describe('workspace logo files', () => {
+  it('advertises and accepts GIF images', () => {
+    expect(WORKSPACE_LOGO_ACCEPT_ATTRIBUTE.split(',')).toContain('image/gif')
+    expect(validateWorkspaceLogoFile(file({ name: 'animated.gif', type: 'image/gif' }))).toBeNull()
+  })
+
+  it('rejects files larger than 5MB', () => {
+    expect(validateWorkspaceLogoFile(file({ size: 5 * 1024 * 1024 + 1 }))).toBe(
+      'File "logo.png" is too large. Maximum size is 5MB.'
+    )
+  })
+
+  it('lists GIF among the supported formats in validation errors', () => {
+    expect(validateWorkspaceLogoFile(file({ name: 'logo.bmp', type: 'image/bmp' }))).toBe(
+      'File "logo.bmp" is not a supported image format. Please use PNG, JPEG, GIF, SVG, or WebP.'
+    )
+  })
+})
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.ts b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.ts
new file mode 100644
index 00000000000..30169ed911c
--- /dev/null
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/workspace-logo-file.ts
@@ -0,0 +1,26 @@
+const MAX_WORKSPACE_LOGO_SIZE = 5 * 1024 * 1024
+
+const WORKSPACE_LOGO_IMAGE_TYPES = [
+  'image/png',
+  'image/jpeg',
+  'image/jpg',
+  'image/gif',
+  'image/svg+xml',
+  'image/webp',
+] as const
+
+const WORKSPACE_LOGO_IMAGE_TYPE_SET = new Set<string>(WORKSPACE_LOGO_IMAGE_TYPES)
+
+export const WORKSPACE_LOGO_ACCEPT_ATTRIBUTE = WORKSPACE_LOGO_IMAGE_TYPES.join(',')
+
+export function validateWorkspaceLogoFile(
+  file: Pick<File, 'name' | 'size' | 'type'>
+): string | null {
+  if (file.size > MAX_WORKSPACE_LOGO_SIZE) {
+    return `File "${file.name}" is too large. Maximum size is 5MB.`
+  }
+  if (!WORKSPACE_LOGO_IMAGE_TYPE_SET.has(file.type)) {
+    return `File "${file.name}" is not a supported image format. Please use PNG, JPEG, GIF, SVG, or WebP.`
+  }
+  return null
+}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
index d8c707f0e81..efe8b0c769e 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
@@ -93,6 +93,7 @@ import {
   useWorkflowOperations,
   useWorkspaceLogoUpload,
   useWorkspaceManagement,
+  WORKSPACE_LOGO_ACCEPT_ATTRIBUTE,
 } from '@/app/workspace/[workspaceId]/w/components/sidebar/hooks'
 import {
   compareByOrder,
@@ -1330,7 +1331,7 @@ export const Sidebar = memo(function Sidebar({
       <input
         ref={logoFileInputRef}
         type='file'
-        accept='image/png,image/jpeg,image/jpg,image/svg+xml,image/webp'
+        accept={WORKSPACE_LOGO_ACCEPT_ATTRIBUTE}
         className='hidden'
         onChange={handleLogoFileChange}
       />