Everything encrypted.
Nothing leaves your device.
Files, passwords, checksums and signatures – computed right in your browser. No account, no upload, works offline.
File vault
Files of several gigabytes are encrypted block by block, with a password, key file and device binding.
Passphrases
Memorable words, genuine randomness.
Split a secret
Any three of five shares open it again.
Signatures
Prove a file comes from you and is unchanged.
Remove metadata
Delete location and camera data from photos and PDFs without re-encoding the image.
Built private
- No uploads
- No telemetry
- Works offline
All tools
No tool found.
Files and text
- File vaultEncrypt files and folders with AES-256-GCM (streaming, Argon2id, key file).
- Text encryptionEncrypt short texts into a block you can pass on.
- Encrypted notebookKeep notes in the browser under a password; export and import as .trsr.
- Key pairs and encrypting for othersECDH P-256: create a key pair, share the public key, encrypt files for others.
- Digital signaturesSign files with ECDSA P-256 and verify signatures.
- Split a secret (Shamir)Split a secret into n shares, any k of which restore it.
- Vault file infoShows version, key derivation and binding of a .trsr file – without a password.
Passwords
- Password generatorRandom passwords from your browser’s random number generator.
- Passphrase generatorDiceware passphrases with German and English word lists and entropy display.
- Strength checkEstimates how well a password withstands an attack.
- Password leak checkChecks via HIBP k-anonymity whether a password appears in known leaks (opt-in).
- One-time codes (TOTP)Compute time-based codes, create and scan QR codes.
Verify
- Hash and HMACCompute checksums for text or files, and HMAC.
- Checksums and hash identifierSHA-256, SHA-512 and BLAKE3 for multiple files, compare with checksum lists, hash identifier.
- JWT decoderInspect JSON Web Tokens and verify HS256/384/512 signatures.
- Metadata inspectorView EXIF, PDF and Office metadata; losslessly clean JPEG, PNG, WebP and PDF.
- Image cleanerRemove metadata such as camera and GPS location from images (redraw).