PDF Redaction Tool
Drag to black out sensitive areas in a PDF, then download a safely flattened copy — no uploads, ever.
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How to use
- Upload a PDF file.
- Click and drag over any sensitive area to black it out. You can draw as many boxes as you need.
- Click "Download Redacted PDF" to save the flattened copy.
FAQ
Q. Is my file uploaded to a server?
A. No. Everything happens in your browser — the PDF is never sent anywhere.
Q. I made a mistake, can I undo it?
A. Click "Clear this page" to reload just that page from the original, undoing every box drawn on it.
Q. Can the redacted text be recovered later?
A. No. Every page is flattened into an image before export, so there's no original text data left in the file to extract.
Q. Does this work with multi-page PDFs?
A. Yes, every page is shown separately and you can redact each one independently.
Why this is actually safe
Most free "redact" tools just draw a box over the text — the original text is still hiding underneath and can be extracted by copy-pasting or with a script (this is exactly how several real-world document leaks happened). This tool works differently: every page is converted into a flat image before your black boxes are burned in, and the exported PDF is rebuilt entirely from those images. There is no original text left in the file to recover. The trade-off: text in the exported PDF (including parts you did not redact) is no longer selectable or searchable, and the file size will be larger than the original.