Code & data
JSON Formatter
Bring a little order to your JSON. Format, indent, and read it clearly.
Free · Browser-basedCODE & DATA
JSON Validator
Check JSON syntax and spot a missing comma before it slows you down.
One less thing on your list.
- 01
Paste the document you want to check.
- 02
Run the syntax check.
- 03
Review the result and correct any reported parsing error.
About this tool
Check that a document follows JSON syntax. Objects, arrays, strings, numbers, booleans, and null are all valid JSON root values.
This checks syntax, not a JSON Schema or the meaning of your data. Browser error messages may differ. Unsafe integers are rejected because this platform uses JavaScript numbers.
A couple of useful answers.
Is an array valid at the top level?+
Yes. JSON can have an array or a primitive as its root, as well as an object.
Can I include comments?+
No. Comments are not part of strict JSON syntax.
This tool runs in your browser. Your input is not uploaded or saved by Saanvi.
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