JSON Formatter
Format, minify, and validate JSON instantly. Your data never leaves your browser.
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What this tool does
Formats, minifies, and validates JSON data instantly. Supports configurable indentation and handles large files efficiently.
How to use it
Paste or upload your JSON, then click Format to beautify, Minify to compress, or Validate to check for errors. Copy or download the result.
Privacy note
Your data never leaves your browser. All processing happens locally on your device. We don't store, log, or transmit your JSON data.
What this tool is used for
A JSON formatter is useful when raw API responses, webhook payloads, or configuration files are hard to read. You can beautify JSON for debugging, validate the structure before shipping a change, and minify it again when you need compact output.
Developers often use a JSON formatter while working with REST or GraphQL responses, test fixtures, config files, and logs. Because this tool runs locally in the browser, you can inspect sensitive JSON without sending it to a remote service. The formatted JSON view also supports collapsible objects and arrays, making large JSON documents easier to inspect.
Common use cases
- Debug API responses and webhook payloads
- Validate JSON structure before using it in code or config
- Format JSON for readability or minify it for compact transport