🔒 Free · No signup · Files stay private

Edit PDF Free Online — Annotate, Draw & Highlight

Annotate, highlight, draw, and add text to PDFs.

Edit PDF now → All tools
📁

Drop your file here

or click to browse — your file never leaves your browser

1

Upload PDF

Select your file.

2

Edit

Add text, draw, highlight, or annotate.

3

Preview

See changes in real-time.

4

Download

Save your edited PDF.

✏

Text & Draw

Add text boxes, freehand drawings, shapes.

🖍

Highlight

Highlight important sections in any color.

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Save

Download the edited PDF instantly.

Frequently Asked Questions

Is this tool really free?

Yes — 100% free with no signup, no subscription and no limits. All processing happens in your browser.

Are my files stored anywhere?

Never. Processing happens entirely in your browser. Files never leave your device.

Is it secure?

Yes. PDF.js (Mozilla's open-source library) runs locally and ignores scripts embedded in PDFs.

Does it work on mobile?

Yes — iOS Safari 14+, Chrome and Firefox on Android fully supported.

Will there be a watermark?

No. CuroPDF never adds watermarks to your output files.