PDF Annotator

Add notes, highlights, comments, and drawings to your PDF documents online. Free, secure, and works on all devices.

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Select a PDF file to start annotating
Supports PDF files up to 10MB

Professional PDF Annotation Made Simple

Transform your PDF workflow with our powerful online PDF annotator. Whether you're reviewing documents, marking up contracts, or collaborating on projects, our tool provides everything you need to annotate PDFs efficiently and professionally.

Key Features

  • Text Annotations: Add comments, notes, and text boxes anywhere on your PDF pages with customizable fonts and colors.
  • Highlighting Tool: Emphasize important sections with vibrant highlights in multiple colors to organize your content effectively.
  • Drawing & Sketching: Use freehand drawing tools to create arrows, circles, underlines, and custom sketches directly on your documents.
  • Color Customization: Choose from a full spectrum of colors to categorize and organize your annotations by importance or topic.
  • Instant Download: Save your annotated PDF immediately with all annotations embedded permanently in the document.
  • No Registration Required: Start annotating immediately without creating accounts or providing personal information.
  • Cross-Platform Compatibility: Works seamlessly on Windows, Mac, iOS, Android, and all modern web browsers.
  • Secure Processing: Your documents are processed locally in your browser for maximum privacy and security.

How to Use the PDF Annotator

Getting started with our PDF annotator is incredibly straightforward. Simply click the "Choose PDF File" button and select your document from your device. Once loaded, you can immediately begin adding annotations using our intuitive toolbar.

Select the text tool to add comments and notes, use the highlight feature to mark important passages, or choose the drawing tool to create custom annotations. Change colors anytime using the color picker to organize your annotations by category, importance, or reviewer.

When you're finished annotating, click the download button to save your PDF with all annotations permanently embedded. The process is fast, secure, and preserves the original quality of your document.

🎯 Enhanced Productivity

Streamline your document review process with professional annotation tools that help you work faster and more efficiently than traditional paper-based methods.

🔒 Complete Privacy

Your documents never leave your device. All processing happens locally in your browser, ensuring your sensitive information remains completely private and secure.

💰 Completely Free

Enjoy full access to professional PDF annotation features without subscriptions, hidden fees, or usage limits. Perfect for students, professionals, and businesses.

📱 Universal Access

Access your PDF annotator from any device with a web browser. Whether you're on desktop, tablet, or mobile, your annotations work perfectly everywhere.

Perfect for Every Use Case

Our PDF annotator serves a wide range of professional and personal needs. Students can highlight key concepts in textbooks and research papers, while teachers can provide detailed feedback on assignments and projects.

Business professionals use our tool for contract reviews, proposal markups, and collaborative document editing. Legal professionals rely on our precise annotation tools for case document review and client communication.

Researchers and academics appreciate the ability to organize complex documents with color-coded annotations and detailed notes. Real estate agents, consultants, and project managers find our tool indispensable for document collaboration and client presentations.

Advanced Annotation Features

Beyond basic highlighting and text notes, our PDF annotator offers sophisticated features for professional document management. Create layered annotations that can be toggled on and off, use different annotation styles for various review stages, and maintain consistent formatting across large document sets.

The intuitive interface adapts to your workflow, whether you prefer keyboard shortcuts for rapid annotation or detailed mouse-driven precision. Our tool remembers your color preferences and tool selections, making repetitive annotation tasks faster and more consistent.