How to Annotate a PDF: Highlight, Comment, Draw

Reviewing a contract or a draft? Annotation lets you give precise feedback on the document itself instead of writing “page 3, paragraph 2…” in an email.

Annotation types and when to use them

• Highlight — flag passages to revisit.
• Underline / strikethrough — “keep this” / “remove this”.
• Comment — attach a specific note to a spot.
• Arrow / freehand — point at a chart, circle a number.

How to annotate a PDF step by step

1. Open Annotate PDF and select the file.
2. Pick a tool (and color/thickness), then mark the page.
3. Add as many annotations as needed across pages.
4. Download the annotated PDF to send back.

Tips

• One color = one meaning (yellow = question, red = must-fix) so reviewers parse it instantly.
• Comments > vague highlights when you want a specific change.
• Annotations stay editable in some readers — flatten before sending if the markup must be permanent/visible everywhere.

Privacy

Markup is applied in your browser; the document isn’t uploaded. No signup, no watermark.

FAQ

Will the recipient see my notes? Yes; flatten first if their reader hides annotation layers.

Remove an annotation? Delete it before downloading; the original stays untouched.

Mark up now with Annotate PDF.

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