Upload a PDF to annotate
Add highlights, drawings, text, shapes, sticky notes, and stamps to any PDF. Annotate online for free with no signup.
Upload PDF
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Annotate
Add highlights, text, drawings, shapes
Download
Export your annotated PDF
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Supported formats: PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, JPG, PNG
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PDF annotation happens in your browser
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Start annotating immediately
Full annotation toolkit
Highlight, draw, text, shapes, stamps, and more
Undo & redo
Full history with keyboard shortcuts
Works on all devices
Desktop, tablet, and mobile friendly
High quality output
Keep annotations crisp in the final PDF
Mark up any PDF with highlights, drawings, and stamps
Upload your document, add annotations in the browser, and download the finished PDF — all without an account.
Annotated PDF
One clean download
More PDF Tools
Move to the next document task without leaving the same workflow system.
PDF to JPG
Export annotated pages as images for sharing.
Organize PDF
Reorder pages before or after annotating.
Split PDF
Separate annotated sections into new files.
Merge PDF
Combine annotated PDFs with other documents.
Frequently Asked Questions
Built for focused document workflows
Free to use | No registration | Secure and private
When to use Annotate PDF
Annotate PDF is built for people who need to move from PDF documents that need review comments, highlights, or feedback markings into a marked-up PDF ready for discussion, approval, or revision follow-up. Annotation is best when the goal is review and feedback rather than structural editing or source-document recovery.
The strongest use cases for this workflow include team review cycles, approval comments, and proofing and quality checks. It is designed to stay simple from the first click through the final download, so people can get the file result they want without extra steps.
Review and feedback
Highlight passages, add comments, and mark up documents for team review cycles.
Study and research
Underline key points, add sticky notes, and annotate academic papers or study material.
Contract markup
Strike through clauses, add text corrections, and flag sections before sending back.
Visual proofing
Draw freehand, add shapes and arrows to point out changes in design or layout drafts.
How this workflow fits
A quick view of the typical annotate pdf flow.
- 1Upload or select the source file needed for this task.
- 2Apply the processing step that matches the document problem.
- 3Review the result and continue to the next workflow if needed.
Why users trust this tool
Annotate PDFs directly in your browser with full privacy.
- Annotation happens entirely client-side — your PDF never leaves your device.
- Full toolkit: highlights, drawings, text, shapes, sticky notes, stamps, and signatures.
- Undo and redo with keyboard shortcuts for a smooth editing flow.
- Download a flattened PDF with all annotations baked into the final file.
Related tools
These related tools support the next likely step in the same document workflow.