# Annotate a PDF — highlight, note & stamp, no upload

> Add highlights, sticky notes, stamps, and freehand strokes to a PDF, then flatten them for sharing. Runs in your browser with no upload.

Mark up a PDF with highlights, sticky notes, stamps, and freehand drawing, then flatten the markup into the page before sharing. Everything is done on your device, so the file isn't uploaded.

Annotating is how you give feedback on a document — highlighting the important lines, sticking a note beside a paragraph, stamping approval. This tool provides those marks and lets you flatten them so the shared file shows exactly what you intended.

It's visual markup rather than full Acrobat annotation objects. If you need to permanently hide content rather than comment on it, use Redact.

## How to

1. **Open the PDF.** Drop the PDF you want to mark up.
2. **Add markup.** Highlight text, drop notes and stamps, or draw freehand.
3. **Flatten & save.** Bake the overlays into the page and download.

## FAQ

### Can I highlight and add comments?

Yes — highlight passages, add sticky notes, place stamps, and draw freehand strokes over the page.

### Will annotations be editable after I share?

Flatten them before saving and they become part of the page, so recipients see the markup without being able to move or delete it.

### Is my PDF uploaded to annotate it?

No. Markup is drawn and flattened in the browser, so the document remains on your device.


## Related tools

- [Redact](https://www.safepaper.app/docs/redact)
- [Sign](https://www.safepaper.app/docs/sign-pdf)
- [Compare](https://www.safepaper.app/docs/compare)
- [Watermark](https://www.safepaper.app/docs/watermark)

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Canonical HTML: https://www.safepaper.app/docs/annotate
Markdown: https://www.safepaper.app/docs/annotate.md

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