JSON Formatter & Validator
Format, minify, and validate JSON
About the JSON formatter (beautify & validate)
Paste messy JSON and the tool re-indents it into a readable structure. It detects syntax errors and can also minify by removing unnecessary whitespace. It is useful for inspecting API responses, debugging, and tidying config files.
Processing happens in your browser, so you can format and validate sensitive JSON without sending it anywhere. No installation is needed, and you can copy the result directly.
Frequently asked questions
- Can it detect JSON syntax errors?
- Yes. If parsing fails it reports an error, helping you spot issues like missing brackets or commas.
- What is the difference between beautify and minify?
- Beautify adds indentation for readability; minify strips whitespace and line breaks to make the payload smaller for transfer or storage.
- Is the JSON I paste uploaded?
- No. Everything is processed inside your browser and no data leaves your device.