Developer tools
JSON formatter/validator
Format, validate and minify JSON, with clear error messages when the JSON is invalid. Runs entirely in your browser.
JSON Formatter
How to use JSON formatter/validator
- Paste JSON text into the tool.
- Format it to check it is valid and readable.
- Copy or download the formatted result, or fix the error the tool points to.
A good use for this
Making a block of JSON from an API or a config file readable, and finding the typo that makes it invalid.
Limits
The tool checks structure, not meaning: valid JSON can still hold wrong data, and the tool will not tell you the data itself is wrong.