PDF Redact

Permanently remove sensitive content from PDFs.

How to use this tool

Steps

  1. Add a PDF and wait for page previews to render.
  2. Open each page that contains sensitive material and draw boxes slightly beyond the full area that must disappear.
  3. Review every page at useful zoom, including headers, footers, repeated identifiers, attachments, comments, and pages with no marks.
  4. Export the rebuilt PDF, reopen it in another viewer, search for the removed text, and inspect document properties before sharing.

Supported formats

  • Input: a PDF that PDF.js can render.
  • Marks: rectangular regions drawn on page previews.
  • Output: a PDF with rasterized marked pages and copied unmarked pages.

Things to know

  • The tool cannot know whether every sensitive area was marked.
  • Unmarked pages are copied, so their original text, metadata, annotations, and attachments require separate review.
  • Rasterized pages lose selectable text and may be less accessible.
  • A visual black box can hide too little if the mark does not cover the complete glyph or surrounding context.
Read the full guide