Marginalia - PDF Markup

Marginalia is a simple, fast PDF markup tool for anyone who needs to annotate, edit, or mark up a document without touching the original file.

No account. No sign-up. No uploads to a server — everything happens right on your device.

WHAT YOU CAN DO

- Highlight text and passages

- Add sticky-note style annotations and comments

- Cover existing text and retype over it

- Insert images anywhere on a page

- Add extra blank writing pages to any PDF

- Rotate, reorder, and navigate pages easily

- Search across the whole document

- Zoom in/out and use a clean, distraction-free reading view

- Full undo/redo support, so you can experiment freely

- Export your marked-up PDF, ready to share or print

WHO IT'S FOR

Teachers marking up worksheets, students annotating study material, professionals reviewing contracts and reports, or anyone who just needs to write on a PDF without installing a full desktop suite.

PRIVACY-FIRST BY DESIGN

Marginalia works entirely on the files you open — locally, on your device. Nothing is uploaded, stored, or shared. Your documents stay yours.

Marginalia is built and maintained by We The Mind (wethemind.com).