JSON formatter & validator
How to use JSON formatter & validator
- Paste your JSON into the input box.
- It's pretty-printed with proper indentation automatically, and any syntax errors are flagged with a location.
- Copy the formatted output, or fix the highlighted error and re-check.
Example
Minified API response: like {"id":1,"name":"x"} expands into readable, indented JSON you can actually scan for the field you need.
About this tool
JSON formatter & validator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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