Annotate PDF
Review PDF pages with highlights, text notes, rectangles, and freehand marks. Keep annotations editable in compatible PDF readers.
How to annotate pdf
- Choose a PDF and select a page.
- Add notes, highlights, or drawing.
- Download the annotated file or flatten it later for sharing.
When to use this tool
Mark passages during review, point out a correction, or add a note alongside a diagram. Annotations are additions and do not remove underlying content.
Frequently asked questions
Yes. Standard PDF annotations remain editable in compatible readers.
Use Flatten PDF to bake annotations into page content.
Related PDF tools
Your selected files stay on your device. Reset the workspace or close this tab to release the application’s references to them.