Tools
JSON Formatter
Paste JSON below. Formatting and validation run entirely in your browser—nothing is uploaded to our servers.
How to use
- Paste raw JSON (from an API response, config file, or clipboard).
- Fix any syntax errors shown in red until the preview updates.
- Choose indent size, then copy formatted or minified output.
Tip: For huge payloads, your browser may slow down—trim to a smaller snippet while debugging.