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Free tools
Small, honest utilities that run entirely in your browser. Nothing you type is sent anywhere — no server, no logging, no network request. Close the tab and it's gone. The same principle Kistvault is built on, in a web page.
GeneratorPassphrase generatorBuild a strong passphrase from randomly chosen words, with the exact entropy shown. Uses your device's secure random source.Open →
EstimatorPassword strength estimatorSee roughly how long a password would resist brute-forcing — with honest caveats about what the estimate can and can't know.Open →
How we can promise nothing leaves your browser: these pages contain only static HTML, CSS and JavaScript. The logic runs locally using your browser's built-in crypto.getRandomValues. There is no form submission, no analytics of what you type, and no backend to receive it — you can confirm it yourself in your browser's network tab.
A strong secret deserves a strong vault
Generate a passphrase here, then let Kistvault protect it with Argon2id and keep your files recoverable with a printed Recovery Kit — on iOS and Android, with no cloud.