Annotate a PDF
Read your PDF full-page and mark it up right where it matters — pen, highlighter, text, shapes and arrows. Everything happens in your browser, so your document stays private.
Drop a PDF to annotate
or click to browse
Also on your phone
Annotate PDF on the go
The free QuickPDF app puts this and 20+ other tools in your pocket — scan with the camera, sign with your finger, and ask AI what a document says. Most tools run on your device, so they keep working without a connection.
Free — requires iOS 13 or later.
Free on Android phones and tablets.
How to annotate a pdf
- 1
Open your PDF
Drop your PDF above, or click to browse. It opens as a scrollable reader.
- 2
Pick a tool and mark up
Choose pen, highlighter, text, a shape or arrow, set the colour, and draw right on the page. Use Scroll to move around.
- 3
Download
Click Download to save a new PDF with your annotations baked in.
Frequently asked questions
Is my file uploaded?
No. Rendering and annotating happen entirely in your browser — your PDF never leaves your device.
Can I undo or erase?
Yes — use Undo to step back, or the Eraser tool to tap and remove any single annotation.
Will the annotations be permanent?
They're drawn onto a new copy of the PDF you download; your original file is untouched.