Developer & Tech
JSON Formatter & Validator
Format, minify and validate JSON with clear browser-side errors.
JSON formatter
Format, minify and validate structured data
Common questions
Good to know
Does it accept JavaScript object syntax?+
No. Valid JSON requires double-quoted keys and strings and does not allow comments or trailing commas.
Is my JSON uploaded?+
No. Formatting and validation run locally in your browser.
More tools
View all developer & tech toolsPrivacy and quick tips +
This tool runs in your browser. Your input is not stored or sent to us.
- Remove secrets and tokens before pasting.
- Use two-space indentation for compact readability.
- Validate again after manual edits.