Redact · nothing uploaded
Drag a box over anything that must not be seen. Kagaz destroys what is underneath rather than covering it — which is the difference between redaction and a black rectangle somebody can copy the text out from behind.
Drag across the page to cover something. Tap a box to remove it again.
Only pages carrying a redaction are flattened at this resolution. Every other page is left completely untouched, text and all.
Redacted on your own machine — the document never left it. Kagaz is free and open source, made by Amit Jena in India.
Drawing a black rectangle over a name does not remove the name. In a PDF, that rectangle is simply another object sitting on top. The text underneath is still in the file, still selectable, still copyable, and trivially extractable by anyone who thinks to try.
This has gone wrong publicly and expensively — court filings, government releases and corporate disclosures have all leaked names that somebody believed were blacked out. The information was never removed; it was only hidden from view.
Any page you mark is rendered to a flat image with the marked areas painted out, and the original page object is thrown away. The text, the images and the vector content underneath are gone from the file — there is nothing left to recover, because it is no longer there.
The price is honest and worth stating plainly: redacted pages stop being text. They cannot be selected, searched or read aloud by a screen reader. Pages you did not mark are copied through untouched and keep everything they had.
No, and here more than anywhere that matters. There is no server. Check the Network tab.
No. There is nothing behind them — the page is a single flattened image with the content already removed.
Because a page of text stored as text is tiny, and the same page stored as an image is not. Lower the resolution, or run the result through Compress PDF.
Not yet. Search-and-redact across a whole document is on the roadmap.