PDF Redaction (Burn-in)

Draw rectangles over sensitive content. When you export, the tool burns in those areas so they can’t be recovered. Everything runs locally in your browser.

Document & Settings

Opacity preview
Tip: Hold Shift while dragging to draw a square. Arrow keys nudge the last box by 1px (Shift+arrows = 10px).

Pages

Viewer

Preview opacity does not affect final burn-in (always solid fill). Color does.

How this redaction works

For each page, we render the PDF to an image and draw your redaction boxes on top. We then create a fresh PDF composed of those images. That means the covered regions are baked into the pixels—so the original text/graphics underneath are gone.

  • Private: runs completely in your browser; nothing is uploaded.
  • Permanent: redacted output no longer contains the hidden text/graphics.
  • Trade-off: output pages become images, so text won’t be selectable/searchable.

FAQ

Is this different from drawing black boxes in a PDF editor?

Yes. Many tools only overlay boxes (the original text remains underneath). This tool burns redactions into the page image so the content is removed.

Can I change the redaction color?

Yes. Choose any color. Final burn-in is a solid fill in that color.

What DPI should I use?

150–200 DPI is fine for most documents. Use 300 DPI when you need higher print quality (larger files).

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