Annotate PDF — comments, highlights & drawings
Review documents like a pro: highlight, underline and strike out passages, drop sticky-note comments, sketch with the pen and add boxes or arrows. These are real PDF annotations — they show up in the comments panel of Acrobat, Preview and every PDF reader.
Highlight, underline, strikeout
Sticky-note comments
Pen, boxes, ellipses, arrows
Real PDF annotations (Acrobat-compatible)
Optional flatten
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Encrypted transfer
Deleted after 2h
No watermark
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How it works
PDF Annotator in three steps
01
Open
Upload the PDF to review.
02
Annotate
Highlight, comment, draw. Every comment carries your name.
03
Save
Download — or flatten so annotations can't be removed.
Frequently asked
What is the difference with Edit PDF?
Edit PDF burns your changes into the page. The Annotator adds standard, removable annotations that reviewers can reply to and resolve.