JS/JSON Minifier

Web MCP対応
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Minifier Features

Remove Comments

Strips single-line and multi-line comments

Collapse Whitespace

Removes unnecessary spaces and tabs

Optimize Operators

Shortens operator spacing safely

Valid JSON

Ensures output is valid JSON

Your data stays yours

100% local
Everything runs in your browser
Zero uploads
Files are never sent to a server
No sign-up
Free to use, no account needed

JS Minifier FAQ

Answers to the most common questions about using this tool.

Does minification change JavaScript behavior?

No. Minification only removes whitespace, comments and shortens variable names where safe. The resulting code behaves identically but is significantly smaller for faster page loads.

Is this tool free to use?

Yes — every ConvTop tool is 100% free, with no sign-up, no limits and no watermark.

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