RedoSan Authenticity
Online digital authenticity tool β 100% browser-based. Nothing is uploaded to any server.
Digital Watermark
9 algorithms: LSB, DCT, DWT and more
Pixel Injection
20+ advanced pixel injection algorithms
Fingerprint
SHA-256 + perceptual image hashes
Metadata
EXIF, dimensions, format info
Timestamp
SHA-256 hashing + OTS hash verification
C2PA Provenance
Read & write content provenance metadata
Digital Watermarking
Required for algorithms 1-4, 6-9. Type 5 (Zero-bit) ignores this.
File Fingerprinting
Search Results
Advanced Pixel Injection
Metadata Reader
Reads EXIF, dimensions, format, and color mode. All processing in pure JavaScript.
File Timestamping
C2PA Content Provenance
Read C2PA content provenance metadata from images. Displays manifests, assertions, actions, ingredients, and signature info.
About RedoSan Authenticity
RedoSan Authenticity is an open-source digital authenticity tool that runs entirely in your browser. No files are ever uploaded to any server β all processing happens client-side.
We provide a comprehensive suite of tools for digital forensics and media verification:
- Watermarking β 9 algorithms including LSB, DCT, DWT, neural-style, and forensic watermarking
- Fingerprinting β Cryptographic hashing (SHA-1/2/3, BLAKE2/3, MD5, RIPEMD-160, Whirlpool) and perceptual image hashing
- Metadata β Read EXIF, dimensions, format, and color mode from images
- Timestamping β SHA-256 hashing with OpenTimestamps verification support
Built with privacy as a core principle. Your files never leave your device.
Privacy Policy
Your data stays on your device. RedoSan Authenticity is a 100% client-side application. All processing is done in your browser using JavaScript. No files, metadata, or any other data are transmitted to any server.
What we collect
Nothing. We do not collect, store, or transmit any personal data, files, or analytics. The application runs entirely on GitHub Pages and no backend server is involved.
Third-party libraries
We load JavaScript libraries from CDNs (cdnjs and jsdelivr) for PDF and DOCX export functionality. These CDNs may have their own logging and analytics. No data from your files is shared with these services.
Changes
This policy may be updated occasionally. Continued use of the tool constitutes acceptance of the current policy.
Contact Us
Have questions, suggestions, or found a bug? We'd love to hear from you.