JSON Formatter & Validator
Format, validate, and minify JSON directly in your browser.
Your input is not sent to a server. All processing is performed locally in your browser.
Actions
Format and validate JSON
Validate JSON syntax locally in your browser, then create either a readable indented version or a compact version without insignificant whitespace.
How to use
- Enter or paste JSON.
- For formatting, choose 2 spaces, 4 spaces, or a tab for indentation.
- Choose Format or Minify.
- If a syntax error appears, check and correct the indicated area.
- Copy the current result.
Processing
JSON.parse validates the syntax and JSON.stringify formats or minifies the result. Your input is not sent to a server.
FAQ
What happens when the JSON is invalid?
No result is generated. When available, the tool shows the line and column near the syntax error.
Can I minify JSON?
Yes. Minify removes insignificant spaces and line breaks without changing the JSON data.
Can I change the indentation?
Yes. Choose 2 spaces, 4 spaces, or a tab.
Is my input sent to a server?
No. Validation, formatting, and minification all take place locally in your browser.