JSON Validator
Validate JSON and see line/column details when parsing fails.
Paste JSON to check whether it is syntactically valid.
What does a JSON validator do?
It attempts to parse the text as JSON and reports success or a positioned error.
How to validate JSON
- 1
Paste JSON
Enter the text you want to check.
- 2
Validate
A successful parse confirms valid JSON. Failures include message and line/column when the engine reports a position.
- 3
Fix and re-check
Edit the input and validate again. Copy when valid.
JSON Validator FAQ
Does it check a schema?
No — it checks that the text is valid JSON syntax, not JSON Schema compliance.
Trailing commas?
Standard JSON does not allow trailing commas; those fail validation.
Uploaded?
No.
Related tools?
JSON Formatter to repair readability; JSON Viewer to explore structure.