Is this PDF annotator really free?

Yes, completely free. No sign up, no account, no watermark. All annotation tools — text, highlight, draw, sign, image insert, and redact — are available to everyone with no limits.

Is my PDF uploaded to a server?

No. Your PDF is never sent to any server. Everything runs entirely in your browser using PDF.js for rendering and pdf-lib for export. Your file stays on your device.

Can I sign a PDF for free?

Yes. Use the Sign tool to draw your signature on a canvas, then click anywhere on the PDF to place it. Your signature is stored locally and can be reused across pages.

What annotation tools are available?

The tool offers 7 annotation modes: Select (move/resize annotations), Text (add text boxes), Highlight (yellow highlight over text), Draw (freehand pen strokes), Sign (place a drawn signature), Image (insert images), and Redact (black out sensitive content).

Can I save the annotated PDF?

Yes. Click the Export button in the toolbar to download the annotated PDF. All annotations are embedded into the PDF file using pdf-lib, so they are visible in any PDF viewer.

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PDF Annotator — Add Text, Highlight, Sign & Redact PDFs Free

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