JSON Workbench

Privacy-first JSON & JWT tools that run in your browser

About JSON Workbench

JSON Workbench started because I kept hitting the same wall: pasting real data (tokens, configs, payloads) into random online tools felt risky, and I never knew where that data actually went. So I built a set of dev tools, JSON formatter, JWT debugger, CSV to JSON converter, Excel compare, and more, that run fully in your browser. Nothing gets uploaded, nothing touches a server. If you handle sensitive JSON or JWTs at work and can't paste them into cloud tools or LLMs, this is built for you.

Screenshots

Maker

Listed from Product Hunt. Claude Updates summarizes public launches and links back to the source.