Fix Google Drive PDF Comments Not Showing in Adobe Acrobat Reader
Question details
Users are unable to view comments and annotations added to a PDF via the Google Drive viewer when opening the same file in the Adobe Acrobat Reader mobile app.

- Product
- Adobe Acrobat Reader, Google Drive
- Device & OS
- Mobile
- Scenario
- Collaborating on and reviewing PDF documents using Google Drive and attempting to view the updated comments on a mobile PDF reader.
- Observed behavior
- Comments added through the Google Drive PDF viewer fail to appear or render when the document is subsequently opened in the Adobe Acrobat Reader mobile application.
Ensure your mobile device has a stable internet connection so that Google Drive can fully synchronize any recent file changes and annotations before you attempt to open the document.
Force Sync and Download the Latest PDF File
Downloading a fresh local copy ensures that you are opening the most up-to-date version of the file with all synchronization processes completed.
Often, the Google Drive app caches an older version of the PDF, or the comments have not finished writing to the file's metadata. Downloading the file directly to your device forces the latest data to be fetched.
Completely close the PDF file in both the Google Drive app and the Adobe Acrobat Reader app.
Open the Google Drive app and swipe down on the screen to force a synchronization of your recent files.
Tap the three-dot menu icon next to the PDF file in Google Drive and select 'Download' or 'Save to Device'.
Open Adobe Acrobat Reader, navigate to your device's local file storage (Files app), and open the newly downloaded PDF.

Use a Native PDF Editor for Adding Comments
Prevent compatibility issues by instructing collaborators to use dedicated PDF software rather than a browser-based previewer.
Update the Mobile PDF App
Updating your application ensures you have the latest compatibility patches for reading new annotation types.
View and Manage PDF Comments Easily with WPS Office
Avoid syncing and compatibility issues between cloud storage previewers and standalone apps. WPS Office features a robust, built-in PDF editor that allows you to read, add, and synchronize PDF comments smoothly across all your devices without formatting loss.
- 1. Install WPS Office: Download and install the free WPS Office app on your mobile device or computer.
- 2. Open your PDF: Launch WPS Office and open the PDF file directly from your local storage or connected cloud drive.
- 3. Access the Annotation Tools: Navigate to the 'Comment' tab or toolbar at the bottom of the screen to view all existing notes.
- 4. Add and Save Comments: Use the toolset to add your own replies or highlights, then tap 'Save' to ensure absolute compatibility.

Frequently Asked Questions
Why do some PDF annotations show up blank on my mobile device?
Mobile PDF viewers may not fully support advanced or non-standard annotation types created in web browsers or third-party web previewers. Downloading the file locally and keeping your PDF app updated to the latest version usually resolves this.
Does Google Drive alter standard PDF comments?
Google Drive's built-in previewer uses its own rendering system, which can sometimes format comments differently or fail to write them immediately into the standard PDF metadata layer recognized by dedicated readers like Adobe Acrobat.
How can I recover comments that didn't sync properly?
Reopen the file in the original web viewer (Google Drive) on a computer. If the comments are visible there, choose the 'Print' option and select 'Save as PDF' to create a flattened copy, or simply download a fresh standard copy to your device.




