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Free tool
JavaScript Minifier
Paste JavaScript to strip comments and extra whitespace. Runs entirely in your browser — nothing is uploaded anywhere.
Safe by design: this strips comments and leading/trailing whitespace but deliberately keeps line breaks intact. Collapsing every line onto one is how naive JS minifiers silently break code via automatic semicolon insertion (a bare
return followed by a newline means something different once that newline is gone). For maximum compression in production, use a real bundler with Terser or similar as part of your build — this tool is for a quick, safe shrink, not a production pipeline.Need a proper build pipeline instead?
We set up bundling, minification and CI/CD that won't silently break your code.