Developer Utilities
JSON Schema Validator
Checks JSON data with AJV against a JSON Schema and lists each error path and message.
Questions and answers
How to use JSON Schema Validator
- Paste JSON data and its schema separately.
- Validate the data.
- Read field-level failures and correct the input.
A practical example
A schema requiring an integer age should reject a quoted age string.
What to check before using the result
This checks the supplied schema, not factual truth or safety. Supported schema dialects and keywords matter.
Local processing
Inputs are processed in this tab. The site and some engines still load network assets.
Inspect before sharing
Review the output and keep the original file. Large files may take longer to process.
No account needed
No account, API keys, or watermarks required.