JSON Validator
Validate JSON and get a summary of its top-level keys and types.
Free No signup Runs in your browser — nothing uploaded
Result
How to use the JSON Validator
- Paste your content, or load a file.
- The result appears as you type.
- Copy or download the output.
Frequently asked questions
- Does it check against a schema?
- Not yet — this validates syntax and describes the shape.
- Do my files get uploaded?
- No. This tool runs entirely in your browser, so the file never leaves your device.