PDF Annotator

Select a PDF and annotate it — highlight, draw, add text notes, and shapes. Download the marked-up document in seconds. Free, private, no signup.

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Draw Your Signature

Free Online PDF Annotator — Professional Mark-up, Merge & Review

Collaborate and review documents effectively with the web's most versatile free PDF annotator. Perfect for students, teachers, and professionals who need a secure way to mark up PDFs for feedback, grading, or personal reference without uploading sensitive files to a server.

Combine & Compare Multiple Files

Streamline your review process by bringing all your sources into one workspace. Our PDF merge capability allows you to "Add PDF" to your current session, enabling you to annotate and compare multiple documents simultaneously. Once finished, download them as a single, professionally combined file.

Advanced Highlight & Draw

Use our freehand drawing pen for natural-feeling annotations, or the dedicated highlight tool for clean, semi-transparent overlays. Adjust colors, opacity, and stroke widths to match your preferred review style. Every mark you make is fully editable and moveable.

Organize As You Annotate

Need to duplicate a page for extra notes? Or rotate a scanned sheet? Our sidebar tools let you duplicate, rotate, and reorder pages instantly while you work. You can even delete redundant pages across all your merged documents to keep your final file concise.

Digital Signatures & Security

Add professional digital signatures to your documents using our built-in signature pad. Because our tool uses 100% client-side processing, your signatures and sensitive documents never leave your computer, ensuring absolute privacy for your professional reviews.

Frequently Asked Questions

1. How secure is this PDF Editor?

It is extremely secure. This tool uses "Client-Side Processing," meaning your PDF files are never uploaded to our servers. All editing and page management tasks happen strictly inside your browser, making it safe for confidential documents.

2. What editing tools are available?

You have access to a full suite: Text tool for typing, Draw tool for freehand, Highlight tool, and Shapes (Rectangle, Circle, Line, Arrow). You can also add digital signatures and use the Undo/Redo system to fix mistakes.

3. Can I merge multiple PDF files?

Absolutely! Use the "+ Add PDF" button in the sidebar to prepend additional documents. You can reorder pages from all added PDFs and download them as a single, combined file.

4. Can I reorder pages in the combined PDF?

Yes! The thumbnails sidebar allows you to reorder pages via drag-and-drop across all your merged documents. You can also duplicate or delete pages before exporting.

5. Does this tool support digital signatures?

Yes. Click the "Sign" tool to open the signature pad. You can draw your signature, save it, and then place it anywhere on any page of your PDF.

6. Will my edited PDF have watermarks?

No. We provide a completely clean editing experience. Your downloaded PDFs will not contain any watermarks or RizCraft branding.