Frequently asked questions
Why use this instead of an online JSON validator?
Most online validators send your JSON to a server for parsing. SnapToolz uses your browser's native `JSON.parse` — orders of magnitude faster on big payloads, and the data never travels. Critical for production data, auth tokens, or anything you'd worry about pasting into a random web tool.
Can I decode production JWTs here?
Yes — and you should. The decoder runs entirely client-side, so even production tokens (which often contain identifying claims like user IDs, email, organisation IDs) stay on your machine. Never paste a JWT into a tool that says 'we don't store your data' but operates server-side — the request is observable in logs, in transit, and in whatever caching the operator runs.
Why a browser-based developer toolset vs. a desktop app?
Browser tools load in under a second, work on any device (including borrowed laptops and phones), and stay in sync with the version everyone else is using. The trade-off is they're less powerful for batch jobs over thousands of files. For everyday lookups — formatting JSON, decoding a JWT, hashing a string, encoding a URL — the browser path is faster end-to-end because there's no install. Install SnapToolz as a PWA to keep it one click away offline.
Are my files uploaded anywhere?
No. Every SnapToolz tool runs entirely in your browser using JavaScript and WebAssembly. Files are read locally, processed in memory, and the result is offered as a download. There is no backend.
Is everything free?
Yes — every tool in this category and on the entire site is free with no sign-up, no daily limit, and no watermark.