What is JSON formatting?

JSON (JavaScript Object Notation) is a lightweight data format used everywhere in APIs and config files. But JSON returned by an API or written by hand is often crammed into one line with no indentation, hard for humans to read.

Formatting indents and wraps it by hierarchy for readability; minifying does the opposite, stripping spaces to shrink the payload. This tool runs entirely in your browser locally, so pasted content is never uploaded.

🔒 Private by design — your JSON never leaves your device

Many "free" JSON formatters process your text on a server. That means your data — API keys, tokens, passwords, customer records — gets uploaded, parsed in the cloud, and sometimes logged or leaked. In late 2025, a well-known formatter (JSONFormatter.org) exposed roughly 5 GB of user-submitted data, including SSH private keys and credentials, because the text was sent to its servers.

Jisubao is different. Formatting, minifying and validation happen 100% in your browser, on your own machine. Nothing is sent anywhere. Paste a secret config, an API response with tokens, or a customer export — it stays on your device. No account, no upload, no leak surface.

Before pasting anything sensitive into any online tool, check whether it says "runs locally / client-side". If it doesn't, assume your data leaves your computer.