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PDF Annotator
pdf

Add Notes, Highlights & Stamps

🔒100% Private — Your files never leave your browser. No server upload, no data stored. Everything is deleted when you close the tab.

Click anywhere on a page to add text notes, highlights, or stamps. Switch pages, pick colors, then download. 100% browser-based.

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Drop a PDF file here or click to upload

All processing happens in your browser — your file never leaves your device.

Data Source & Legal Disclaimer
Effective: 2026
Last updated: Today
Update frequency: Manual review
Sources: pdf-lib · pdfjs-dist

Annotations are baked into the PDF as visual overlays (text, rectangles, stamps). Existing embedded annotations in the source PDF are not editable. All processing happens in your browser — your file never leaves your device.

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About This Tool

Annotate PDF documents by adding text notes, highlight rectangles, and custom stamps directly on pages. Choose colors, positions, and sizes. 100% browser-based — your file never leaves your device. Perfect for reviewing documents, marking up contracts, and adding comments without printing. No signup, no watermarks, instant download.

Text notesHighlightsCustom stamps

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This tool is free, and always will be.

No paywalls, no signups, no data sold. Built by a solo developer who believes useful tools should be accessible to everyone.

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100% of proceeds go towards hosting & building more free tools.