About json.
json. is a small collection of free developer utilities focused on JSON and everyday encoding tasks. The goal is simple: fast tools, clean UX, and strong privacy defaults.
100%
Client-side
0
Server storage of JSON
Free
Price
Privacy-first by design
Public tools process data in your browser with native APIs. We do not upload your JSON to our servers. Contact form messages are the only content intentionally sent to the backend.
Who built this, and why
json. is built and maintained by a solo developer who kept reaching for the same handful of format/validate/encode tasks while building other projects, and got tired of sites that buried a simple textarea under trackers, walls of ads, and forms asking to sign up first. Each tool here is scoped to do one conversion well, run entirely on your device, and stay usable without an account.
The tool list grows when a task shows up often enough in real work to justify a dedicated page, not on a fixed schedule — which is why some tools are more polished than others right now.