PDF Annotation Tool

Collaborate and review documents effectively with our PDF Annotation Tool. Add text highlights with custom colors, insert comments and sticky notes, draw directly on PDFs, and mark up documents for team feedback. All processing happens securely in your browser - your documents never leave your device. Perfect for document reviews, academic papers, legal documents, and team collaboration.

Highlight Text Add Comments Drawing Tools Sticky Notes Export Annotated PDF

Supported Formats

review Mark up documents for team feedback

highlight Annotate important sections with color

collab Leave notes for stakeholders to review

Drag & Drop Ready

Upload PDF

Select a PDF file to start annotating

Annotation Tools

Colors

Custom Color

Presets:

Opacity

Transparency: 50%

Pages

/ 0

Export

PDF Viewer

100%

All Annotations

No annotations yet. Start marking up your PDF!

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What annotation features does this tool offer?

This tool provides comprehensive annotation features including text highlighting with multiple color options, text comments and sticky notes, freehand drawing tools, shapes (rectangles, circles, lines), and the ability to add typed text directly on the PDF. You can annotate multiple pages and save all markups with your document.

How do I annotate a PDF document?

Simply upload your PDF and select an annotation tool from the toolbar (highlight, comment, draw, etc.). Click on the PDF to add your annotation. For text highlights, select the text you want to highlight and choose your color. For comments and sticky notes, click anywhere to add them. All changes are tracked and can be exported with your document.

Can I save my annotations and share them with others?

Absolutely! All your annotations are embedded in the PDF when you export it. You can download the annotated PDF and share it with team members, clients, or collaborators. The annotations remain visible and editable in the downloaded file. No special software needed to view annotated PDFs.

Is the PDF Annotation Tool compatible with all devices?

Yes, this tool works on all modern browsers including Chrome, Firefox, Safari, and Edge on desktop, tablet, and mobile devices. All processing happens locally in your browser, so no installation or downloads are required. The tool works offline after initial loading.

Are there any limitations on PDF file size or complexity?

This tool can handle most PDF files efficiently. Very large files (over 50MB) or PDFs with complex embedded content may affect performance. For optimal experience, we recommend files under 20MB. All your data stays on your device - nothing is uploaded to our servers, ensuring maximum privacy and security.