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JSON Formatter

Validate, pretty-print or minify JSON locally in your browser.

Click a button below to start

How to use JSON Formatter

Validate, indent and minify JSON online, with clear syntax errors and one-click copying. Your data is processed only in your browser.

Input
JSON text
Output
Formatted or minified JSON
Processing
Processed in your browser; your input is not uploaded
  1. Paste JSON into the input box.
  2. Choose Format or Minify and check any error messages.
  3. Copy the output.

FAQ

Does it support JSON with comments?

It parses standard JSON only, so comments and trailing commas are not supported.

Is my data sent to a server?

No. Validation and formatting both happen in your current browser.

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