Black out names, numbers or terms in a PDF - via search terms or drawn directly on the page. The content is truly removed. No upload.
Rendering page...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Classic redaction often fails: a black rectangle is placed over the text - but underneath it survives and can be selected, copied or searched. True redaction must remove the content irreversibly. That is exactly what this tool does - in three ways, alone or combined.
Enter terms (e.g. names, case numbers or amounts) - every occurrence is found automatically. Or drag a rectangle directly on the page preview over a spot no text match would catch (e.g. a signature or a photo); multiple rectangles are possible, each removable via its X. Every page with a match or a drawn rectangle is rendered to an image onto which the black bars are burned - the original text of that page is then physically gone. Pages without a match or rectangle stay unchanged.
Five patterns can additionally be auto-detected: email addresses, phone numbers, credit-card-like numbers, US-Social-Security-like formats (123-45-6789) and dates - toggle them independently of the terms list, or combine both. These are pure format patterns, not checksum validation: a credit card number is recognised by prefix and length (not the Luhn check digit), so even an invalid number with a matching format can be caught. Social Security numbers are only recognised in the US format - other countries use different formats. Dates are inherently ambiguous (day/month order varies by country) and can occasionally match unrelated digit sequences.
Everything happens locally in the browser, nothing is uploaded - the most sensitive documents never leave your device. The pattern detection also runs purely client-side as a text match, with no network request at all. The honest price of real security: a redacted page becomes an image, so its remaining text is no longer selectable or searchable.
| Input formats | |
|---|---|
| Output format | |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Redacts text-based matches (no OCR for scanned image PDFs), detected patterns and/or manually drawn rectangles. Pattern detection checks format only (no checksum): the credit-card pattern matches prefix+length without a Luhn check, the SSN pattern only covers the US format 123-45-6789, and date patterns are ambiguous (day/month) and can occasionally produce false positives. A redacted page becomes an image - the remaining text on that page is then no longer searchable (the price of real security). Review the result before sharing. Open password-protected PDFs first with "Unlock PDF".
No. The affected page is rendered to an image and the bar is burned into the pixels - there is no text layer left from which the content could be recovered.
Yes, draw a rectangle right on the page preview for that - independent of the term search.
No, redaction happens entirely locally in the browser.
Because real security only works if the whole page becomes an image. That is the deliberate price - pages without a match or rectangle stay searchable.
Only if the PDF contains real text (no OCR). For pure image scans, drawing rectangles helps.
It checks format only, no checksum - a credit card number is recognised by prefix and length, not the Luhn check digit; the SSN pattern only covers the US format; and date patterns are ambiguous. Occasional false positives are possible, the tool deliberately favours over-redaction over under-redaction.