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JSON Minifier
Remove insignificant JSON whitespace without rounding large or precise numbers.
JSON
JSON
Browser only
Your input and output are processed in this browser. They are not uploaded for processing. No account is required.
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How to use this tool
- Paste JSON text or choose a UTF-8 file; a chosen file takes precedence.
- Download compact strict JSON. Whitespace inside string values remains unchanged.
- Select Process data, review the result, and download it. Use Reset to clear the working data.
Examples
{"name":"Alice","count":9007199254740993,"active":true}
Limitations
5 MiB input; 40 nesting levels; 200,000 values; 20 MiB output. Duplicate keys and unpaired Unicode surrogates are rejected. Numbers retain exact tokens.
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