About the JSON Formatter

A JSON formatter takes minified or messy JSON and re-indents it into a clean, readable tree so you can scan structure at a glance. Pasting a single-line API response and seeing it expand into properly nested objects and arrays makes it far easier to spot a missing comma, an unclosed bracket, or a value with the wrong type.

This formatter validates as it beautifies: if the JSON is invalid, it points you to the problem instead of silently producing broken output. You can also collapse sections, minify back to a compact string for production, and copy the result — all in the browser, so private payloads never touch a server.