✏️ Edit PDF
Edit PDF Online — Annotate, Draw & Highlight Free
Annotate any PDF directly in your browser. Draw, highlight, add text notes and erase. No software needed — 100% free.
Edit PDF — Annotate & Draw
✅ Free · No signupDrop your PDF here to annotate
or click to browse
Annotations applied locally — files never leave your browser
How It Works
1
Open Edit PDF
Go to curopdf.com/edit-pdf.
2
Upload PDF
First page loads in the editor instantly.
3
Annotate
Draw, highlight, or add text on any page.
4
Navigate pages
Prev/Next to annotate across all pages.
5
Save PDF
All annotations embedded in the downloaded file.
How to Annotate a PDF Online Free
CuroPDF's editor lets you draw freehand, highlight regions in colour, place text notes anywhere on the page, and erase annotations — all directly in your browser without installing any software.
✅ Touch drawing works on smartphones and tablets — use your finger to draw or highlight naturally on the PDF.
Annotation tools explained
- Draw — freehand pen at any size and colour
- Highlight — drag to colour a rectangular area
- Text — type a note and click to place it on the page
- Erase last — removes the most recent annotation on the current page
Frequently Asked Questions
Is this tool really free?
Yes — 100% free, no signup, no subscription, no limits.
Are my files stored anywhere?
Never. Everything runs in your browser. Files never leave your device.
Is it secure?
Yes — all processing uses open-source libraries running locally.
Does it work on mobile?
Yes — iOS Safari 14+, Chrome and Firefox on Android.
Works on all pages?
Yes — use Prev/Next to annotate every page.
Can I undo?
Use Erase last to remove the most recent annotation.