JSON Formatter
Paste JSON to format, minify, or validate it instantly.
Format messy JSON into readable output, minify it for production, or catch syntax errors before they break your app. This JSON beautifier and validator processes everything locally — ideal for API responses, config files, and debugging.
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How to use
- Paste your JSON into the input box.
- Click Format to beautify or Minify to compress.
- Copy the output or fix errors shown in red.
FAQ
- Is my JSON sent to a server?
- No. Parsing and formatting happen entirely in your browser.
- What if my JSON is invalid?
- The tool shows the parser error message with position details so you can fix syntax issues.
- What is the difference between format and minify?
- Format adds indentation and line breaks for readability. Minify removes whitespace to reduce file size.
- Can I format large JSON files?
- Yes, within browser memory limits. Very large payloads may be slower but are never uploaded.
- Does it validate against a schema?
- It validates JSON syntax only. For JSON Schema validation, paste valid JSON and check structure manually.