Highlight and annotate a PDF
Highlight passages, draw freehand, and add rectangles, circles, lines and arrows.
- Files never leave your device
- Free, no signup, no watermark
- Works on any browser
- Edit existing text
- Sign
- Fill forms
- Comment & mark up
- Stamps & symbols
- True redaction
- 20+ fonts, any language
How to highlight and annotate a PDF
- 1Open your PDF
- 2Pick highlight, draw or shapes
- 3Download the annotated PDF
About Annotate PDF
Highlight any area, draw freehand, and add rectangles, ellipses, lines and arrows in the colors you choose. Hold Shift for perfect squares, circles and 45° lines. Every mark becomes part of the PDF, so it looks the same in any reader.
Useful for
- Mark up a draft for a colleague
- Point out an error on a plan
- Study notes on lecture slides
- Circle the parts of a form to fill in
Frequently asked questions
Can I change the highlight color?+
Yes. Pick any color from the toolbar before or after highlighting.
Is it free?+
Yes, completely free: no signup, no watermark, no paywall at download.
Are my files uploaded to a server?+
No. Everything is processed locally in your browser, so your files never leave your device.