Free PDF Redaction Tool

The PDF Redaction Tool is a free online tool that black out sensitive words, names, and phrases in pdf documents. upload your pdf, enter terms to redact, and download the redacted version instantly.. It runs entirely in your browser with no installation or sign-up needed.

PDF.js extracts text positions from each page, and pdf-lib draws filled black rectangles over any text matching your redaction list.

This tool provides visual redaction. For court-admissible or legally binding redaction, use certified software like Adobe Acrobat.

Yes. All processing happens locally in your browser — no files are uploaded to any server.

Absolutely. The PDF Redaction Tool processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the PDF Redaction Tool is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the PDF Redaction Tool in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Since the PDF Redaction Tool processes files in your browser, the size limit depends on your device's memory. Most devices can handle PDFs up to 50-100MB without issues.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The PDF Redaction Tool works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

Visual redaction paints a solid black box over text so the words are no longer visible on screen or in print, but the original characters still exist underneath in the file. True redaction physically deletes the underlying text and any hidden metadata, so it can never be recovered. This tool performs visual redaction: PDF.js locates each matching text element and pdf-lib draws an opaque black rectangle over it, but the text beneath the box is not removed. That means someone could select, copy, or run text extraction on the file and still read the covered words. For casual sharing this is usually fine, but for legally binding or court-admissible documents you should use certified software like Adobe Acrobat. Try the tool to quickly black out names or figures before forwarding a draft.

Matching is literal and case-insensitive, so the tool only covers text that exactly contains what you type. If a phone number shows up as both (555) 123-4567 and 555-123-4567, those are different strings and you must add each one on its own line to catch both. The same applies to names: list John Smith, J. Smith, and J Smith separately if the document mixes them. Because matching is substring-based, typing smith will also cover Smith, SMITH, and Smithson in one pass, which is handy for catching variants of a root word. Enter each word or phrase on a separate line, then check the redacted-element count the tool reports afterward. A surprisingly low number usually means your search terms don't exactly match the document's wording. Paste your terms above to redact every format at once.

Scanned documents and photos of pages are stored as images, not as selectable characters. When you scan a contract or snap a picture of a form, the page is saved as a flat picture with no extractable text layer, so there is nothing for the tool to read or match. The redaction process relies on PDF.js reporting the position of real text elements, and an image-only PDF has none, which is why it reports zero matches and redacts nothing. To fix this, run the file through an OCR (optical character recognition) tool first to add a searchable text layer, then upload the OCR'd version here. Alternatively, for image-based pages you may prefer an annotation or image-editing tool that lets you draw boxes manually. Once your PDF has selectable text, upload it above and your terms will be matched and covered.

Yes, with this visual redaction tool they potentially can. The black rectangles are drawn on top of the text rather than deleting it, so the original characters remain embedded in the file. A reader who selects the area, copies it, or runs a text-extraction utility could retrieve the words hidden behind the boxes. This is a known limitation of any overlay-style redaction and the reason the tool shows a warning before you process a file. For everyday purposes — hiding a salary in a forwarded offer or masking a name in a quick share — that risk is acceptable. For sensitive disclosures, discovery files, or government submissions, use certified redaction software that strips the underlying text and metadata entirely. If casual masking is all you need, upload your PDF above, list the terms, and download a covered copy in seconds.

Yes. Enter each item you want hidden on its own line, and the tool treats every line as a separate search term, so you can target a name, an email address, an account number, and a phrase like "strictly confidential" all in a single pass. It then walks through the entire document, checks every text element on every page, and covers each match with a black rectangle — there is no need to process pages one at a time. When it finishes, it reports how many text elements were redacted across how many pages, so you can confirm the coverage looks right. The downloaded file keeps the original layout untouched except for the covered text and is named with a _redacted.pdf suffix. Add your full list of terms above and redact the whole PDF in one step.