Annotate PDF embeds coloured note boxes directly into the PDF at the position and page you specify — all locally in your browser.
Annotate PDF
Add colour-coded sticky notes to specific page positions
Add coloured note boxes — positions are % from the top-left of the page.
Related tools
Keep the workflow moving
FAQ
Common questions
Do my files leave the browser?
No. The processing workspace runs locally in your browser for supported tools, and downloads are generated on-device.