Free privacy tools
Lock what matters
Encrypt files, seal secrets and pressure-test your passwords — right in your browser.
- Nothing uploads
- Works offline
- No account
- 36 languages
Why these work offline
Your files are processed in this browser, not uploaded. Some functions need an initial library download. For offline use, first open and try the tools you need online. Then test without a connection; browsers can clear saved data. Breach lookups need a connection. Photo Trail loads map tiles online, or shows a plain grid offline.
Encrypt a file in your browserAES-256-GCM with every parameter stated and the byte layout documented.Works offlineEncrypt private textWrite or paste a note, then encrypt it in your browser.Works offlineSeal a fileEncrypt with a one-time random key, so there is no passphrase to crack. Share the file and the key separately.Works offlinePassword protect a PDFAdd AES-256 PDF encryption in your browser. No upload.Works offlineRemove a PDF passwordUnlock with the password you already know — no guessing.Works offlinePassphrase generatorDiceware passphrases from the EFF large wordlist, drawn by your browser or by your own dice.Works offlineHas this password leaked?Check a password against known breaches. Only 5 hash characters leave your browser, never the password.Lookup needs the networkHow long would your PIN survive?How long a PIN survives three kinds of attack. Every assumption editable.Works offlinePassword setup health checkAudit how your password setup is built, never a password itself, and get fixes ranked by impact.Works offlineOpen a sealed fileSee the name, size and type, with a risky-file warning, before anything is saved.Works offline