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JSON minifier
Remove unnecessary whitespace from valid JSON.
Paste valid JSON and run the minifier to parse it and serialize a compact result. Spaces and newlines used for formatting disappear, while whitespace inside strings is preserved. Invalid JSON produces an error rather than a partially processed result.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Limitations and details
JSON comments and trailing commas are rejected; JavaScript number precision applies, and duplicate object keys keep only the final value.
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.