Redact PDF
Paint black over regions and rebuild image-only pages so text does not survive underneath.
Runs in this tab. The file stays here.
About Redact PDF
Black out regions and rebuild image-only pages so text cannot be recovered underneath.
Drawing a black box on top of text while leaving the text objects intact is a well-documented security failure. This tool rasterizes pages after painting redaction rectangles, so there is no text layer left to extract.
Everything runs in this tab. The PDF never leaves your device for a server to process.
How to use Redact PDF
- 1Drop a PDF.
- 2Drag boxes over sensitive regions.
- 3Redact & download.
Common questions
Can someone undo the black boxes?
Not as selectable text. The output pages are images. Someone could still guess from context or surrounding pixels — redaction is not cryptography.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation