JSON Validator
Validate JSON and highlight common formatting problems.
JSON
Valid JSON
OK
Root type: object
Root type
object
Characters
21
Keys (if object)
2
In-depth explanation
Paste JSON to check whether it parses. Valid input shows the root type; invalid input shows the parser error message. Everything runs locally in your browser — your inputs are not uploaded to produce the result.
Standard JSON: objects, arrays, strings, numbers, booleans, and null. Trailing commas and comments are invalid. It reports the error. Use the JSON Formatter once the syntax is fixed.
Validation runs locally in your browser. Tweak the inputs above to compare options, then copy or note the result you need.
Frequently asked questions
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