RedoSan-Authenticity
Client-side toolkit to watermark images, audio and documents, and verify C2PA provenance, fingerprints and forensic signals.
Built with
Vanilla JSWeb Crypto APIPDFKitdocxJSZipOpenTimestampsFFmpeg.wasm
About
RedoSan Authenticity is a browser-based, client-side toolkit for digital authenticity. It embeds and detects watermarks in images (9 algorithms), audio (8) and documents (5), computes 21 fingerprint hashes, signs and verifies C2PA provenance, generates Ed25519/P-256/RSA DID keys, issues PDF/DOCX/EPUB certificates with OpenTimestamps, and runs forensic ELA/noise/JPEG-marker analysis. A 12-command CLI and 20 standalone tool pages are included. Vanilla JS, no framework, no server upload - files never leave the device.
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<a href="https://ossdrop.com/tool/redosan-authenticity"><img src="https://ossdrop.com/badge/redosan-authenticity" width="250" height="56" alt="RedoSan-Authenticity on OSSDrop" /></a>Markdown
[](https://ossdrop.com/tool/redosan-authenticity)Frequently asked
What is RedoSan-Authenticity?
RedoSan-Authenticity is an open-source security & privacy tool — Client-side toolkit to watermark images, audio and documents, and verify C2PA provenance, fingerprints and forensic signals.
Is RedoSan-Authenticity free and open source?
Yes. RedoSan-Authenticity is free and open source, released under the GPL-2.0 license. You can view and contribute to the source at https://github.com/Redo-San/RedoSan-Authenticity.
What are open-source alternatives to RedoSan-Authenticity?
Other open-source security & privacy tools on OSSDrop include Vaultwarden, Metasploit Framework, Trivy, Keycloak.
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