diff --git a/packages/mobile/src/Lib/MobileDevice.ts b/packages/mobile/src/Lib/MobileDevice.ts
index 29d9c75a23f..988201f7cd5 100644
--- a/packages/mobile/src/Lib/MobileDevice.ts
+++ b/packages/mobile/src/Lib/MobileDevice.ts
@@ -1,4 +1,5 @@
 import SNReactNative from '@standardnotes/react-native-utils'
+import { sanitizeFileNameForNativeWrite } from './Utils'
 import {
   AppleIAPProductId,
   AppleIAPReceipt,
@@ -502,7 +503,8 @@ export class MobileDevice implements MobileDeviceInterface {
       directory = saveInTempLocation ? CachesDirectoryPath : DownloadDirectoryPath
     }
 
-    return `${directory}/${filename}`
+    const safeFilename = sanitizeFileNameForNativeWrite(filename)
+    return `${directory}/${safeFilename}`
   }
 
   async downloadBase64AsFile(
diff --git a/packages/mobile/src/Lib/Utils.ts b/packages/mobile/src/Lib/Utils.ts
index 193913d9711..6eda635c133 100644
--- a/packages/mobile/src/Lib/Utils.ts
+++ b/packages/mobile/src/Lib/Utils.ts
@@ -38,3 +38,24 @@ export function isSameDay(dateA: Date, dateB: Date) {
     dateA.getDate() === dateB.getDate()
   )
 }
+
+function parseFileName(fileName: string): {
+  name: string
+  ext: string
+} {
+  const pattern = /(?:\.([^.]+))$/
+  const extMatches = pattern.exec(fileName)
+  const ext = extMatches?.[1] || ''
+  const name = fileName.includes('.') ? fileName.substring(0, fileName.lastIndexOf('.')) : fileName
+
+  return { name, ext }
+}
+
+function sanitizeFileName(name: string): string {
+  return name.trim().replace(/[.\\/:"?*|<>]/g, '_')
+}
+
+export function sanitizeFileNameForNativeWrite(filename: string): string {
+  const { name, ext } = parseFileName(filename)
+  return `${sanitizeFileName(name)}.${ext}`
+}
diff --git a/packages/web/src/javascripts/Components/FilePreview/PreviewComponent.tsx b/packages/web/src/javascripts/Components/FilePreview/PreviewComponent.tsx
index 622678c0160..1417ed29f70 100644
--- a/packages/web/src/javascripts/Components/FilePreview/PreviewComponent.tsx
+++ b/packages/web/src/javascripts/Components/FilePreview/PreviewComponent.tsx
@@ -9,7 +9,6 @@ import ImagePreview from './ImagePreview'
 import { OptionalSuperEmbeddedImageProps } from './OptionalSuperEmbeddedImageProps'
 import { PreviewableTextFileTypes, RequiresNativeFilePreview } from './isFilePreviewable'
 import TextPreview from './TextPreview'
-import { parseFileName, sanitizeFileName } from '@standardnotes/utils'
 import VideoPreview from './VideoPreview'
 
 type Props = {
@@ -60,11 +59,7 @@ const PreviewComponent: FunctionComponent<Props> = ({
       }),
     )
 
-    const { name, ext } = parseFileName(file.name)
-    const sanitizedName = sanitizeFileName(name)
-    const filename = `${sanitizedName}.${ext}`
-
-    void application.mobileDevice.previewFile(fileBase64, filename)
+    void application.mobileDevice.previewFile(fileBase64, file.name)
   }, [application, bytes, file.mimeType, file.name, isNativeMobileWeb])
 
   if (isNativeMobileWeb && requiresNativePreview) {