JSON Formatter
Pretty-print and validate JSON, with the error line reported.
Runs in your browser — nothing is sent to a server
About this tool
Paste raw, minified or messy JSON and get a neatly indented version that's easy to read. If the text isn't valid JSON, the tool tells you exactly which line and column the parser breaks on and which symbol caused the problem. You can pick the indent size or minify it back. Everything happens in your browser — your JSON is never sent anywhere.