Redact PDF Free
Most PDF redaction tools require uploading your document to a remote server, which creates a serious privacy risk — especially when the document contains exactly the sensitive data you are trying to protect. This tool runs pdf-lib entirely in your browser so your file never leaves your device.
Draw black-box redaction regions over any part of each page using your mouse or finger. Navigate through multi-page documents with the Prev/Next buttons and mark as many areas as you need. When you click Redact & Download, solid black rectangles are drawn over every marked region in the PDF and the result downloads immediately.
There is no signup, no free-trial limit, and no file size restriction imposed by the tool. The practical limit is your device memory — most modern computers and phones handle PDFs of hundreds of pages without difficulty.
This approach is suitable for redacting contracts, legal filings, medical records, financial statements, and any other document where confidentiality matters. The black overlays are part of the PDF content and cannot be removed by standard PDF readers.
Click and drag on the page to mark areas to redact. Marked areas become solid black in the final PDF.
Frequently Asked Questions
- Does my PDF get uploaded?
- No. All redaction happens locally in your browser using pdf-lib. Your file never leaves your device.
- Is the hidden content truly removed?
- The tool overlays solid black rectangles on the PDF content. Standard PDF readers cannot see through them. For legally critical documents, verify the output and consult your legal team.
- Does this work on iPhone and Android?
- Yes. Touch-drag works on the canvas to draw redaction areas. The tool runs in Safari and Chrome on mobile.