Fix PDF Comments Disappearing When Uploading to Google Drive from iPad
Question details
Users experience disappearing comments or annotations when uploading a PDF from Adobe Acrobat on an iPad to Google Drive, often accompanied by sharing option changes after app updates.

- Product
- Adobe Acrobat & Google Drive
- Device & OS
- iPadOS (Apple iPad)
- Scenario
- Uploading or sharing an annotated PDF file from an iPad to Google Drive.
- Observed behavior
- Annotations and comments are stripped or disappear upon uploading the PDF, occasionally showing an 'unknown error' when attempting to open the file via Google Drive.
Ensure both your Adobe Acrobat and Google Drive applications on the iPad are updated to the latest versions. It is also highly recommended to save a local copy of your annotated PDF to your iPad's internal storage before attempting to upload or sync.
Verify and Adjust Your PDF Sharing Workflow
The method you use to open or share the file determines whether comments are saved correctly. Changing your workflow can ensure annotations are preserved.
PDF comments are often stored as an interactive overlay. When sharing directly between third-party apps, this layer can sometimes be stripped. Adjusting how the file is passed to Google Drive bypasses this integration error.
In Acrobat, instead of uploading directly to Google Drive, use the 'Share' feature to 'Send a Copy' and save the document locally to your 'On My iPad' folder.
Open the Google Drive app on your iPad, tap the '+' (Plus) icon, select 'Upload', and choose the annotated PDF you just saved locally.
If you are opening an existing PDF from Google Drive to annotate, open it in the Google Drive app, tap the three-dot menu (...), and select 'Open In > Copy to Acrobat' to ensure a stable working copy is generated.

Reconnect Google Drive in Adobe Acrobat
Refreshing the integration between Adobe Acrobat and Google Drive can resolve sync errors and missing data issues.
Annotate and Save PDFs Safely Using WPS Office
Avoid integration glitches and missing comments by using WPS Office. WPS provides a robust built-in PDF editor for iPad that reliably saves your highlights, text boxes, and annotations, preventing data loss when uploading to cloud services.
- 1. Install WPS Office on your iPad: Download and install WPS Office for free from the Apple App Store.
- 2. Open your PDF document: Launch the WPS Office app, tap on the 'Open' folder icon, and select your target PDF file from your device or cloud.
- 3. Add your annotations: Switch to the 'Annotation' or 'Edit' tab to add comments, highlights, stamps, or text boxes directly onto the document pages.
- 4. Save and upload safely: Tap the 'Save' icon. WPS Office seamlessly embeds the comments into the standard PDF format layer, allowing you to upload it safely to Google Drive without losing your work.

Frequently Asked Questions
Why do PDF comments disappear when uploaded to cloud storage like Google Drive?
Comments often disappear because they are stored as separate interactive annotation layers rather than being flattened into the document image. If the cloud viewer or the specific upload protocol doesn't support these layers, the annotations will temporarily or permanently vanish.
How can I permanently embed comments in a PDF on an iPad?
You can 'flatten' the PDF to merge the annotations into the base document layer. This can be done by using the 'Print' function and choosing 'Save as PDF' or by using a dedicated 'Flatten Document' option in advanced PDF editors.
Does the Google Drive previewer support viewing all PDF annotations?
Google Drive's built-in previewer has limited support for advanced PDF annotations. Even if the comments are safely uploaded, they might not be visible in the Drive app preview. Always download the file and open it in a dedicated PDF reader like WPS Office to check if the comments are intact.




