Annotate PDF
Professional PDF annotation tool with comments, replies, stamps, signatures, arrows, and comprehensive annotation features.
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What is Annotate PDF?
Annotate PDF documents online for free with a full suite of professional annotation tools. Add comments, highlights, stamps, arrows, text notes, and more.
Why use this tool?
Professional annotation toolkit powered by PDF.js. Includes comments with replies, stamps, freehand drawing, text highlighting, arrows, and shapes. All processing is client-side.
Common use cases
Ideal for reviewing documents, providing feedback on drafts, marking up proposals, grading assignments, or collaborating on document revisions.
How to use Annotate PDF
- 1Upload your PDF document
- 2Select an annotation tool from the toolbar
- 3Click or drag on the PDF to add annotations
- 4Add comments and replies to annotations
- 5Save and download your annotated PDF
Frequently asked questions
Can other people see my annotations?
Yes. Annotations are embedded in the PDF and visible to anyone who opens the file in any standard PDF reader like Adobe Reader or Chrome.
Can I remove annotations later?
Yes. Use our Remove Annotations tool to strip all annotations from a PDF, or re-open the file in our annotator to edit individual annotations.
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