PDF Annotator / Highlighter

Draw, highlight, and annotate PDF documents offline.

🔒 Zero Uploads ⚡ Offline Sandbox ⚡ Local Calculations

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Upload PDF to Annotate

Choose a PDF document

✓ 100% Free Client-Side Tool

✓ Secure Offline Processing (Zero Uploads)

✓ Instant High-Speed Local Calculations

Annotate PDF documents natively

Draw notes and overlay highlight markers onto review documents completely offline.

We apply high-transparency yellow highlights suitable for reviewing documents.