Annotate PDF
Place text notes, highlights and rectangles on PDF pages.
Drop your PDF files here
Or choose them from your device to get started.
50 MB total · No uploads
Preview your pages, choose a mark and click to place it. Use Undo to remove the last mark. Marks do not erase existing content.
Download the two-page practice PDF. Add Review this checklist on page 2 of the practice file. Confirm page 1 is unchanged. Marks do not redact the text beneath them.
How to use Annotate PDF
Choose a page and mark type
Enter note text or choose a shape, then click its intended location. Use Undo to correct placement.
Save annotated PDF
Keep the source, run the task and inspect the result before accepting it.
Review the saved mark
Compare the saved copy with the practice result described above before using your own document.
Mark up a working copy for review
Add visible PDF annotations in your browser. Review page placement and save a copy without uploading the document.
A practical example
Add a short note or highlight to a relevant passage, then inspect placement in the downloaded file before sharing.
What to check in the result
Covering content with an annotation does not securely redact it. Keep the original and check marks on pages with unusual orientation.
Supported files and limits
Use valid, unencrypted PDF files, within 50 MB total input. Complex files may exceed device memory.
Local document processing · File privacy and website requests.
Help with this task
Questions & answers
Can I use an annotation to redact private information?
No. Covering text with a shape can leave underlying content recoverable. Use a dedicated redaction workflow and verify the result.