Annotate PDF
Mark up a PDF the way you would with a highlighter and pen on paper: highlight passages, underline or strike through text, draw freehand notes, and pin comments — all saved directly into the file you download.
100% private — your files never leave your device
Drop a PDF here, or click to browse
Highlight, underline, draw, and add comments anywhere on the page.
How it works
- 1Upload the PDF.
- 2Pick a tool — highlight, underline, strikethrough, draw, or comment — and mark up the page.
- 3Click "Save PDF" to download the marked-up file.
Frequently asked questions
- Can I undo a highlight or drawing after adding it?
- Yes — switch to "Select", click the mark you want gone, and delete it. Nothing is final until you click "Save PDF".
- Are comments real, collapsible PDF comments I can show or hide?
- No — they're baked directly onto the page as a numbered marker with its note visible alongside it, the same way every other mark here becomes permanent, flat page content. They aren't interactive PDF annotation objects a reader can toggle.
- Can I choose different colors?
- Yes — a small color palette appears whenever a highlight, underline, strikethrough, draw, or comment tool is active.