Free Online PDF Annotation Tool
Add sticky notes, highlights, and markup shapes to any PDF online.
or drag and drop your PDF here
A single PDF, up to ~50MB
No PDF? Try a sample:
PDF
Sample Invoice (1 Page)PDF
Quarterly Report (2 Pages)How to use
- 1Upload a PDF — each page renders for you to mark up.
- 2Pick a tool: sticky note, highlight, rectangle or ellipse, and a color.
- 3Click or drag on the page to place annotations; drag any of them to reposition.
- 4Click Download to save a PDF with real, reader-recognized annotations.
Privacy: Rendering and annotating both happen entirely in your browser using PDF.js and pdf-lib — the file is never uploaded to a server.