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CSS Minifier

Online CSS Minifier/Compressor. Free! Provides an API. Simple Quick and Fast.

Written and hosted by Andrew Chilton (@andychilton) since 2009.


    // setup the URL and read the CSS from a file
    $url = 'https://cssminifier.com/raw';
    $css = file_get_contents('styles.css');

    // init the request, set various options, and send it
    $ch = curl_init();

    curl_setopt_array($ch, [
        CURLOPT_URL => $url,
        CURLOPT_POST => true,
        CURLOPT_HTTPHEADER => ["Content-Type: application/x-www-form-urlencoded"],
        CURLOPT_POSTFIELDS => http_build_query([ "input" => $css ])

    $minified = curl_exec($ch);

    // finally, close the request

    // output the $minified css
    echo $minified;

Thanks to Boudewijn van Breukelen for an updated version of the above code.

Also, Toni Almeida has made a PHP library to easily talk to CSS Minifier : https://github.com/promatik/PHP-JS-CSS-Minifier.

Many people have sent language examples over the years, but we want more! We'd love to add more examples in your favourite programming language, so please send them our way. Email andychilton at that gmail place in the sky, tweet me @andychilton, or open an issue or PR on webdev-sh/cssminfier.com.

Click on the language of your choice to see an example: