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Edit PDF
Add text, draw, highlight and annotate PDFs
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Drop a PDF to start editing
or click to browse
About Edit PDF
PDF Ninjas includes a full in-browser PDF editor — no Adobe Acrobat required. Open any PDF and add text annotations, freehand drawings, yellow highlights, rectangles, or even signatures directly on the page. When you're done, download the edited PDF with all your annotations permanently embedded. Perfect for reviewing contracts, filling in forms, or marking up documents.
Frequently Asked Questions
What annotation tools are available?▾
You can add text, draw freehand lines, highlight areas in yellow, draw rectangles, and add signatures.
Are annotations permanently embedded in the PDF?▾
Yes — when you download the edited PDF, all annotations are permanently embedded into the document.
Can I undo mistakes?▾
Yes — use the undo button to remove your last annotation. You can also select and delete individual annotations.
Does the editor work on mobile?▾
The editor works best on a desktop or laptop browser. Touch support on mobile is limited for drawing tools.