Annotate & Comment PDF

Free PDF Annotation Tool - Add Comments and Highlights Online

Our PDF annotation tool allows you to add highlights, comments, sticky notes, shapes, and text annotations to your PDF documents. Perfect for collaboration, document review, and marking up important information. All annotation processing happens in your browser with complete privacy.

Why Annotate PDF Files?

PDF annotation is essential for document collaboration, review processes, and highlighting important information. Our annotation tool supports multiple annotation types including highlights, text comments, shapes, and arrows. Perfect for students marking up study materials, professionals reviewing documents, or teams collaborating on PDF files.

Annotation Features

• Highlights - Mark important text with colored highlights
• Comments & Notes - Add sticky notes and text comments to PDFs
• Shapes - Draw rectangles, circles, and arrows to emphasize areas
• Text Annotations - Add text directly to PDF pages
• Custom Colors - Choose from a wide range of annotation colors
• Page-Specific - Annotate specific pages in multi-page documents

Common Use Cases for PDF Annotation

• Document Review - Mark up documents for review and feedback
• Study Materials - Highlight and annotate study guides and textbooks
• Collaboration - Add comments and notes for team collaboration
• Proofreading - Mark errors and suggest corrections
• Presentations - Add annotations to presentation materials

Our free PDF annotation tool works entirely in your browser. Your files never leave your device, ensuring complete privacy and security for your documents. Start annotating your PDFs today!