PDF Annotator

Add visual highlights, underlines, strike-through lines, and text notes to PDF documents. 100% private client-side processing.

Private • In-browser processing • Zero server uploads

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How to Use PDF Annotator

1
Select or Drop PDF
Drag and drop your PDF file onto the workspace dropzone.
2
Configure Settings
Choose your preferred parameters, pages, or layout options.
3
Process and Download
Click the action button to process and download your resulting document instantly.

Key Features

100% Client-Side Processing
Your sensitive documents never leave your local web browser.
High-Fidelity PDF Engine
Powered by WebAssembly and native standard vector operations.
Instant Local Generation
Zero server uploads, zero wait times, and zero privacy risks.
Privacy by Design
Fully functional offline with zero analytics or remote tracking.

Common Use Cases

  • Streamlining business and administrative workflows requiring PDF Annotator.
  • Handling sensitive financial, medical, or legal documents with strict data privacy.
  • Assembling and refining multi-page reports, presentations, and applications.
  • Fast, lightweight PDF processing on mobile devices or laptops without installing heavy software.

Frequently Asked Questions

No. All PDF operations are executed entirely inside your browser using client-side JavaScript. Files never touch any remote server.

Yes. The Ai Toolz is fully responsive and functions smoothly on iOS Safari, Android Chrome, and modern tablet browsers.

You can process PDF documents up to 512 MB directly in your browser's local memory.

Edit PDF
Add text, shapes, images and annotations to any PDF page in your browser.
PDF Reader
View and read PDF files in the browser with zoom, search and navigation.
Redact PDF
Permanently black out sensitive text and areas from a PDF document.
Sign PDF
Draw, type or upload a signature and place it on any PDF page.
Watermark PDF
Add a text or image watermark to every page of a PDF with custom opacity.