Annotate PDF Online
Annotate and markup PDF files online. Add comments, text callouts, shapes, arrows, and highlights directly in your browser. Processed locally in your browser.
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How to use Annotate PDF
- 1
Select and upload your PDF document.
- 2
Use text, shapes, notes, and drawing tools to highlight key points.
- 3
Place comments, arrows, or callout frames over diagrams.
- 4
Download the annotated PDF copy instantly.
Capabilities
- Versatile markup suite: text notes, highlights, pen sketches, and shapes
- Full undo/redo history controls for error-free reviewing
- Multi-page navigation and continuous review tools
- Processed locally in your browser; the document is not sent to WebTorq
How to Annotate and Markup PDF Documents Online
Reviewing research drafts, student essays, or architectural plans requires versatile markup capabilities. WebTorq offers an all-in-one annotation toolkit featuring text boxes, callouts, highlighter strokes, and shapes directly in your browser.
Combine text comments, translucent highlights, pen sketches, and directional arrows in a single review session.
Draft reviews and proprietary documents remain confidential because processing happens locally in your browser.
For focused pen sketches, math diagrams, or handwritten marks, check out Draw on PDF.
This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.
Frequently Asked Questions
What annotation tools are available?
WebTorq provides text notes, freehand drawing, highlighter overlays, and geometric shapes (rectangles, circles, lines, arrows) in one unified workspace.
Can I collaborate or send annotated copies to colleagues?
Once you complete your annotations, download the updated PDF. It can be viewed in standard PDF readers on desktop and mobile devices.
How can I prevent reviewers from editing my annotations?
After completing your markup, use our Flatten PDF tool to merge annotations permanently into the page graphics.
Is there an undo/redo option while annotating?
Yes. The editor includes full undo and redo history controls so you can easily revert accidental strokes.
Are my documents kept private during annotation?
Yes. All markup rendering is performed locally in your browser memory; the document is not sent to WebTorq.