Developer Tools
JSON Formatter
Add clear spacing and indentation to JSON data.
Loading JSON Formatter…
Free to use. No account needed. Your files and data stay in your browser.
How this tool works & helpful answers
How to use JSON Formatter
- Paste your JSON, or load an example.
- Select Format JSON to see the result.
- Copy or download it, or go back to edit your input.
JSON Formatter: what to know
Formatting adds indentation and line breaks so nested objects and arrays are easier to read. It does not repair invalid JSON automatically. The formatter preserves numeric literals, string escapes, and duplicate keys while changing only presentation whitespace.
Useful features
- Local browser processing
- Clear input validation
- No account required
Frequently asked questions
Does this accept comments or trailing commas?
No. Standard JSON does not allow comments, trailing commas, single-quoted strings, or unquoted property names.
Is this tool free?
JSON Formatter is free to use without an account. File and processing limits are displayed in the tool.