LocalKitAbout JSON Formatter
Formatted JSON is easier to inspect and debug. Paste data or select a file to validate its syntax and indent nested objects and arrays.
Why use JSON Formatter?
Use two or four spaces to understand API responses and configuration files without altering their values.
How to use JSON Formatter
- 1Choose your input
Drop a supported file into the workspace, or paste text where available.
- 2Make it your own
Review the available output settings and selected files.
- 3Convert and download
Run the tool and download your result. Multiple results can be saved as a ZIP.
Is this json formatter tool safe?
Your files never leave your device. Processing happens locally in your browser; there is no file-upload service. Keep your original and check the converted result.
Frequently asked questions
Will the formatter reorder keys?+
No. Object property order follows JavaScript JSON parsing rules. Numbers beyond JavaScript precision may change; keep large identifiers as strings.
How are my data processed?+
Processing happens in your browser. Your file contents are not sent to our server, and closing or clearing the page releases them.