{ } Online JSON Formatter
Format, beautify, validate and minify JSON online with instant syntax error highlighting. Free JSON beautifier and validator for developers.
Quick Answers
What does JSON Formatter do?
This tool formats, validates and minifies JSON online. It auto-indents data for readability, detects syntax errors and points to their position. Minified mode available for production payloads.
How do I use JSON Formatter?
Paste your JSON into the textarea, click Beautify to indent or Minify to compress. Errors are highlighted with the offending line number.
Who is JSON Formatter for?
Backend developers debugging an API payload, frontend developers inspecting a fetch response, DevOps engineers reading config files, and students learning JSON structure.
Is it free and private?
Yes, free and no signup. All processing happens in your browser using JavaScript, no JSON is sent to or stored on our servers.