How to Recover Missing PDF Highlights and Comments in Acrobat on Mac
Question details
The user lost highlights and comments in a PDF textbook after saving the file using Adobe Acrobat Reader on a Mac.
- Product
- Adobe Acrobat Reader
- Device & OS
- macOS
- Scenario
- Reviewing and adding highlights and notes to a PDF textbook.
- Observed behavior
- Highlights and comments disappeared from the PDF document after saving it with Command+S and reopening the file.
Verify that you have not accidentally opened a duplicate, unedited copy of the textbook. Check your recent files list to ensure you are opening the exact file you recently saved.
Verify the File Location and Check the Comments Panel
Annotations are sometimes merely hidden from view or the system has opened an older, local version instead of your synced cloud file. Checking the Comments panel is the quickest way to confirm if the data still exists.
Confirm whether you originally saved the file locally, to a network folder, or to a cloud service (like iCloud or Dropbox). Ensure you are opening the exact file from that specific location.
Launch Adobe Acrobat Reader, open your PDF, and click the 'Comments' icon in the right-hand tool pane to display the list of all annotations.
If the highlights and notes appear in the Comments pane but not on the document pages, click the 'Options' menu (three dots) inside the Comments pane and ensure 'Show All Comments' is selected.
Recover an Earlier Version via Mac Time Machine or Cloud History
If the file was accidentally overwritten without the comments, you can restore a previous version using macOS built-in backups or your cloud storage version history.
Use 'Save As' to Prevent Future Annotation Loss
To avoid losing PDF highlights and notes during future review sessions, adjust your saving workflow to create a safe working copy before annotating.
Use WPS Office to Reliably Annotate and Save PDFs on Mac
WPS Office features a robust, built-in PDF editor that allows you to seamlessly highlight text, add comments, and save your annotations without the risk of data loss on your Mac.
- 1. Open your PDF in WPS Office: Launch WPS Office on your Mac and drag and drop your PDF textbook directly into the workspace.
- 2. Add Highlights and Comments: Navigate to the 'Comment' tab located on the top toolbar to access reliable highlight, text box, and sticky note tools.
- 3. Save Your Progress securely: Click 'File' > 'Save' or press Command+S. WPS Office safely embeds standard PDF annotations into your document.
Frequently Asked Questions
Why do my PDF highlights disappear after saving on Mac?
This typically happens due to saving over a read-only file, syncing conflicts with cloud storage folders (like iCloud), or inadvertently viewing the PDF in a default app that doesn't properly render standard Acrobat annotations.
Does Mac Preview delete Adobe Acrobat comments?
Yes, Apple's default Preview app can sometimes flatten or strip interactive Acrobat comments and form fields when you save the document. It is highly recommended to stick to dedicated PDF editors like Adobe Acrobat or WPS PDF when modifying annotated files.
Can I recover unsaved PDF notes if Acrobat crashed on my Mac?
If Acrobat crashed before you pressed Command+S, you can often recover your work by reopening the application immediately. Acrobat's AutoSave feature will usually detect the crash and prompt you to recover the last auto-saved version of your PDF.
