Is removing comments the same as redacting a PDF?

No. Removing comments targets annotation objects. Redaction is the workflow for permanently removing sensitive visible information from page content.

Can flattened highlights be removed?

Not as annotations. If a highlight has become normal page artwork, it may need editing, cropping for appearance, or a true redaction review depending on the risk.

Should I clean metadata after removing annotations?

Yes when privacy matters. Comments and metadata are different parts of the file, so removing one does not prove the other is clean.

Privacy and security / Safety checklist / Updated 2026-07-14

Remove PDF comments and highlights before sharing

Clean supported comments, highlights, ink, stamps, and links before sharing a PDF copy.

By PDFToolkit. Published 2026-07-14. Last reviewed 2026-07-14.

Quick answer

Remove PDF annotations when the risk is review markup, comments, highlights, stamps, ink, shapes, or link annotations. This is not redaction and it does not clean metadata, attachments, hidden layers, or visible text that has already been flattened into the page.

When this guide applies

Reviewer comments
Highlight markup
Ink notes
Stamp annotations
Clickable link annotations

When not to use this guide

Do not use annotation removal as redaction for sensitive visible text.
Do not expect metadata, author fields, attachments, or hidden layers to be removed.
Do not rely on it for markup that was flattened into normal page content.

Checklist

Open the PDF and inspect visible notes, highlights, underlines, strikeouts, stamps, shapes, ink, and links.
Remove supported annotation objects from a copy of the file.
Check whether any markup remains as normal page content after processing.
Run metadata cleaning separately when author names, titles, or creator fields matter.
Use redaction, not annotation removal, for sensitive information that must be permanently removed.

Risks to check

Sending reviewer notes can reveal internal feedback or negotiation history.
Removing link annotations can leave visible URL text while disabling the clickable target.
Treating annotation cleanup as redaction can leave sensitive content recoverable.

Limits to know

Flattened or printed markup may remain as normal page content.
Metadata, attachments, form fields, hidden layers, and visible sensitive text are separate risks.
Some unusual annotation types may not be recognized by browser PDF libraries.

How to verify the result

Open the cleaned copy in a standard PDF reader.
Review pages that previously contained comments, highlights, links, stamps, or ink.
Check the comments or annotations panel if the reader provides one.
Search and copy nearby text when sensitive information was involved, then decide whether redaction is required.

Editorial review

Last reviewed: 2026-07-14

This review verifies the accuracy of the published guidance. It does not represent a file-level functional test.

Checked against

Current tool availability
Current processing mode
Documented product limits
Related tool status