Annotate PDF
Add text, shapes, and highlights to your PDF.
100% In-Browser • Zero Uploads
No Login Required
Drop your PDF here to annotate
About Annotate PDF
Markup your PDF documents directly in your browser. Add text notes, draw shapes, highlight important sections, and more.
100% Client-Side
Your files and data are processed locally in your browser memory. Never uploaded to remote servers.
Zero Login Required
Instant access with no account, no email sign-up, no passwords, and no subscription paywalls.
Instant Speed
Powered by modern WebAssembly and native web APIs for near-instant rendering and zero latency.
Privacy Guaranteed
Zero data retention, no user tracking cookies, and GDPR/HIPAA friendly. Your data remains strictly yours.
All Devices Ready
Fully responsive on desktop, tablet, and mobile devices without installing software or extensions.
How to Use
- Upload the PDF you want to annotate.
- Use the toolbar to select highlight, text, or draw tools.
- Apply your annotations.
- Download the marked-up PDF.