Edit & mark up
Highlight & comment
Highlight text and leave sticky-note comments on a PDF, in your browser. Comments appear as real notes in other PDF readers.
or drop it here
Processed on this device. Nothing is uploaded.
How it works
- 1Add a PDF.
- 2Drag to highlight, or click to add a comment.
- 3Save the marked-up PDF.
Your file stays on this device
PDF Tools does the work inside your browser. Your file isn't uploaded or stored, and the site is technically blocked from sending it anywhere.
See how to check it yourself