About

Vaultools started from a familiar annoyance: needing to format some JSON, decode a JWT, or hash a string, and having to paste it into whichever random site ranks first — with no real way to know what happens to it once it's on their server. Most of the time it's nothing. But "probably nothing" isn't a great standard for a live API key, a session token, or a database password, which is exactly the kind of thing that ends up in these tools.

So every tool here runs entirely in your own browser's JavaScript engine instead — the parsing, formatting, decoding, and hashing all happen locally, with a live "network requests sent: 0" counter on every tool page so it's not just a claim you have to take on faith. See how it works for recordings of the real tools, or check your own browser's network tab while you use any of them.

Everything is free with no account or signup. There's an optional Pro tier — batch processing in the browser and a CLI for CI pipelines — for anyone who wants more than one value processed at a time; it doesn't change the privacy model for anyone, paying or not.

Built with Astro as a static site, hosted on Cloudflare Pages. Questions, bug reports, or a tool you'd like to see added — the contact form reaches us directly.