Annotate PDF — Highlight & Comment Online
Add annotations, highlights, and comments to PDF documents online.
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Frequently Asked Questions
How do I use Annotate PDF?
Upload your PDF, select an annotation tool from the toolbar (highlight, comment, draw, etc.), apply it to the document, then download.
Is Annotate PDF free?
Yes, Annotate PDF on ToolPix is 100% free with no signup or installation required.
Is my data safe?
All processing happens in your browser, your data never leaves your device.
What annotation tools are available?
Highlight, underline, strikethrough, freehand draw, text comments, arrows, rectangles, and sticky notes.
Can I share annotated PDFs?
Download the annotated PDF and share it normally. Annotations are embedded in the file so anyone can view them.
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