JSON formatter & validator
Format, beautify, validate, and minify JSON online. Pinpoint syntax errors by line and column, sort keys, and copy or download the result.
HTML, CSS & JS minifier
Minify HTML, CSS, and JavaScript to reduce file size. JavaScript is compressed with Terser in your browser.
How to use HTML, CSS & JS minifier
Minify HTML, CSS, and JavaScript to cut file size. JavaScript is compressed and mangled with Terser; CSS has comments and whitespace removed; HTML has comments and whitespace collapsed while leaving <pre>, <textarea>, scripts, and styles intact.
See the original and minified size and copy or download the result.
HTML, CSS & JS minifier FAQs
Is HTML, CSS & JS minifier free?
HTML, CSS & JS minifier is a free online tool on ReallyUseful.Tools. No account is required.
Does HTML, CSS & JS minifier run in my browser?
HTML, CSS & JS minifier is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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