Permanently black out sensitive text, account numbers, and signatures. Strip hidden author, device, and GPS metadata. Guaranteed zero bytes leave your device.
Amateur tools simply place a black rectangle over text, allowing anyone to highlight and copy the secret text underneath. Tangent permanently flattens redactions into the image stream—making underlying text unrecoverable.
PDFs quietly store author names, company IDs, software versions, and revision history in hidden XMP streams. Tangent purges these hidden tags completely before outputting your file.
All parsing, rendering, and rebuilding happens entirely in your local browser sandbox via WebAssembly. Disconnect your Wi-Fi and the tool will continue working with zero interruptions.
No. Unlike standard PDF editors that merely place a graphic shape layer over live text, Tangent uses raster burn-in flattening. The text characters beneath the black box are permanently destroyed and replaced by solid black pixels in the rendered document stream. It is mathematically impossible to uncover.
When the "Purge Metadata" option is active, Tangent strips the Title, Author, Subject, Keywords, Creator application, PDF Producer, and both Creation and Modification timestamps, as well as unformatted XMP XML packets.
Yes. Your document never leaves your machine. The entire process runs locally in your device's memory using client-side JavaScript. No document is ever uploaded or cached on an external server.