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sconehead

JSON Formatter

Pretty-print or minify JSON in your browser.

Stays on this deviceYour JSON is processed locally in your browser and is not uploaded to our servers.

How to use

  1. Paste or type JSON into the input field.
  2. Choose Format for indented output or Minify for a compact string.
  3. Copy the result. Nothing leaves your browser.

Example

{ "name": "sconehead", "private": true }

JSON Formatter

Paste JSON on the left and format it into readable indented output, or minify it into a compact single line. Parsing uses the built-in JSON.parse API, so invalid JSON is rejected with a clear error.

FAQ

Is my JSON uploaded?
No. Formatting runs entirely in your browser.
Does this validate JSON?
Invalid JSON cannot be formatted. For a dedicated validation message, use JSON Validator.
What indentation is used?
Formatted output uses 2-space indentation.

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JSON Validator

Check whether JSON is valid without sending it anywhere.

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JSON Minifier

Remove whitespace from JSON in your browser.