Fix PDF Attachments Not Opening or Downloading in Gmail on Android
Question details
The user is unable to open or download PDF attachments within the Gmail app on an Android device, although the same files open correctly on the web version of Gmail.

- Product
- Gmail Android App, PDF Reader
- Device & OS
- Android
- Scenario
- Attempting to view or download a PDF attachment received via email directly through the mobile Gmail application.
- Observed behavior
- The PDF attachment fails to download or open within the app, while it works perfectly fine on a desktop or the web version of Gmail.
Ensure your Android device has a stable internet connection and verify that you have a default, up-to-date PDF reader app installed on your phone.
Download the PDF File First and Open Locally
Bypassing the in-app preview by downloading the file directly to your device storage often resolves rendering and opening errors.
Sometimes the built-in previewer in the Gmail app struggles with specific PDF encodings. Downloading the file locally forces the device to use a dedicated PDF reader application.
Open the email in the Gmail app and tap the download icon (downward arrow) on the attachment thumbnail instead of tapping the file name.
Wait for the 'Download complete' notification to appear in your Android notification shade.
Open your device's File Manager or the built-in Downloads app, and locate the newly downloaded PDF.
Tap the downloaded PDF file to open it using your installed PDF reader.

Clear the Gmail App Cache
Clearing corrupted temporary data in the Gmail app can fix problems preventing attachments from downloading properly.
Update or Reassign Your Default PDF Reader
The attachment might fail to open if your default PDF reader is outdated, corrupted, or missing.
Seamlessly Open and Edit PDFs with WPS Office for Android
If your default viewer is causing attachment errors, WPS Office provides a robust, lightweight, and free solution for opening, reading, and annotating PDF files downloaded from your Gmail app.
- 1. Install WPS Office: Download and install the WPS Office app from the Google Play Store.
- 2. Download the Attachment: Open Gmail and tap the download icon on your PDF attachment.
- 3. Locate the File: Tap the downloaded file notification or locate it in your Android file manager.
- 4. Open with WPS: Select WPS Office from the 'Open with' prompt to seamlessly view and manage your file.

Frequently Asked Questions
Why do PDFs open in Gmail web but not on the Android app?
This usually happens due to a corrupted app cache, a weak mobile data connection timing out the download, or an outdated PDF viewer on your Android device that fails to process the in-app preview properly.
What should I do if the download icon in Gmail doesn't work?
If the attachment won't download when tapping the arrow, try switching between Wi-Fi and mobile data. If the problem persists, you can temporarily log into Gmail via your mobile browser (like Chrome) to download the attachment directly.
How do I change the default app for opening PDFs on my Android phone?
Go to Settings > Apps > App Management. Find the app currently opening your PDFs, tap on it, and select 'Clear defaults'. The next time you open a PDF, Android will ask you to choose a new app, such as WPS Office.
Can I preview a PDF in Gmail without downloading it locally?
Yes, Gmail has a built-in previewer. If you tap the attachment directly (instead of the download arrow), it will attempt to open a preview. If the preview fails or shows a blank screen, downloading the file locally is the most reliable workaround.




