Code & data
JSON Validator
Check JSON syntax and spot a missing comma before it slows you down.
Free · Browser-basedCODE & DATA
JSON Formatter
Bring a little order to your JSON. Format, indent, and read it clearly.
One less thing on your list.
- 01
Paste your JSON or load the example.
- 02
Choose two or four spaces for indentation.
- 03
Format, then copy or download your result.
About this tool
Turn compact JSON into an indented document without changing the order of its keys. Helpful when reading an API response or checking a configuration file.
Strict JSON only: comments and trailing commas are not supported. Unsafe integers are rejected to avoid silently changing them. Duplicate keys follow JavaScript's last-value behavior; decimal numbers use JavaScript precision.
A couple of useful answers.
Does formatting validate the JSON too?+
Yes. Invalid JSON produces an error instead of a formatted result.
Will my keys be sorted?+
Keys are not deliberately sorted. JavaScript may order integer-like object keys numerically.
This tool runs in your browser. Your input is not uploaded or saved by Saanvi.
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