JSON Formatter & Validator
Pretty-print, minify, or validate JSON. Clear error messages pinpoint where syntax breaks.
JSON input
Formatted JSON
Start typing in the left pane.
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JSON Formatter & Validator
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JSON Formatter & Validator
Pretty-print any JSON to make it human-readable, or minify it to the smallest form for transmission. If your JSON is invalid, the error message tells you exactly where it broke.
Features
- Pretty-print with adjustable indentation (0–8 spaces)
- Minify to a single line
- Sort keys alphabetically (deep)
- Clear error messages with position info
- Works with any JSON size your browser can hold
Use YAML formatter for YAML or XML formatter for XML.