Vault runs entirely as client-side JavaScript in your browser — no server round-trip, no rate limits, no telemetry. Enter your input, click the action button, and results are computed locally and returned instantly.

Is Vault safe to use with production credentials or secrets?

Yes. All computation is client-side — your input never leaves your device. That said, browser DevTools and extensions can still read what you paste on any page, so use a private/incognito window if you're working with a production secret.

Can I use Vault offline?

After the page has loaded once, Vault works offline because all logic ships as JavaScript. If your browser has service workers enabled you can even bookmark it and use it on a plane or in an air-gapped environment.

What is a UUID and when do I need one?

A UUID (Universally Unique Identifier) is a 128-bit random ID like a1b2c3d4-e5f6-7890-abcd-ef1234567890. It's used when you need a globally-unique key for a database row, event, request trace, or file — without coordinating with a central server. UUID v4 (random) is the default; use v7 if you need timestamp-sortable IDs.

How do I decode a JWT token?

Paste your JWT into the JWT Debugger. It splits the token into header, payload, and signature, Base64-decodes each part, and pretty-prints the JSON claims (sub, exp, iat, iss). Signature verification requires the public key — the decoder shows the algorithm from the header so you know which key format to use.

How do I generate a strong password?

Use the Password Generator: pick a length (16+ recommended), enable symbols and numbers, and click Generate. The tool uses the browser's crypto.getRandomValues API for cryptographically secure randomness — the same primitive used by password managers.

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