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data · format
JSON Formatter
Pretty-print or minify JSON with instant validation — errors point at the problem.
A little guidance. A better result.
How to use JSON Formatter
Pretty-print or minify with instant validation.
Prepare your input
Paste or load valid JSON.
Use the workspace
Choose readable indentation or minified output.
Check your result
Review validation errors and the formatted result.
Know the limits
Formatting uses JavaScript JSON parsing; very large numeric values may lose precision. Store exact identifiers as strings.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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