![]() ![]() #MINIFY CSS WORDPRESS DOWNLOAD#Minifying CSS is the process of removing unnecessary characters from a CSS file, thus reducing the file size and increasing the speed at which a visitor can download your page.įor these examples, we’re going to utilize the famous Twenty Fifteen theme from WordPress. Media can be compressed, too, but that’s for another article. Minimizing the file size reduces the time for them to be downloaded. In order to speed up your site’s loading time - especially on the first visit - it’s imperative that your HTML, CSS and JavaScript be written so that the files are as small as possible. This will slow your page loading times unnecessarily. The problem with style sections and inline styles is that they will be loaded every time with the page and never cached by the browser. When overwriting these files, an old URL may suddenly contain the new assets even though the page was generated before the deploy.A best practice is to remove or minify CSS references in your HTML - whether it’s a style section in the head of the page or inline styles applied throughout the page elements. If 404s occur for previously-good bundles, this is a likely cause – one of the component files is missing. ![]() If either needs to be reconstructed due to a cache miss, the enqueued files must still be available on the server – the URL contains the filenames (usually compressed).īecause of this, avoid deleting older versions of those built files for at least 30 minutes so they can be used as needed. #MINIFY CSS WORDPRESS FULL#It is possible for built assets and concatenation to cause short-term brokenness in CSS and/or JS when combined with full page caching.īecause previously concatenated bundles are cached at the edge, newly deployed changes will usually reference a new bundle, while existing cached pages will reference an old one. ![]() Updated concatenated assets not loading as expected These query parameters are only meant to be used for testing in a browser and should not be added to code. Query parameters can be added to a URL in the browser to disable concatenation and help determine if a JS error or CSS issue is related to concatenation.Īdding these parameters to an affected URL in the browser will load the individual JS or CSS files for the request instead of the static concatenated bundle. Each time a container is created, using filemtime() would result in that container having a different $ver value than other containers.Īdd_filter( 'css_do_concat', '_return_false' ) // disable CSS concatenationĪdd_filter( 'css_do_concat', '_return_false' ) Copy Copied Troubleshooting In-browser debugging methods The $ver value can be updated in functions such as wp_enqueue_script(), wp_enqueue_style(), wp_register_script(), and wp_register_style().īecause of the container-based infrastructure, VIP does not recommend using the function filemtime() to populate a value for $ver. An updated $ver value effectively generates a new and unique static URL for the concatenated assets. When changes are made to enqueued JS and CSS files, the $ver value in the enqueue must be incrementally updated in order to bust the cache on deploy. Enqueued files from a third-party-or outside of an application’s wpcomvip GitHub repository-will not be minified or concatenated.īy default, enqueued JavaScript and CSS files that exist in an application’s codebase will be concatenated by the VIP Platform and cached for 15 days.Some third-party performance scans may not recognize VIP’s CDN as a result of concatenated files being served from the same domain as the VIP site.This results in the low-latency and high-performance impact expected from a CDN. This allows a majority of a site’s traffic, including concatenated scripts and styles, to be served directly from an edge location closest to a site’s visitors, without ever hitting a line of PHP. The responses that are generated by VIP sites are served from a global network of edge cache server locations. Concatenated assets can be identified in the Network tab of a browser inspector by request paths beginning with /_static/?.Logic for concatenation is handled by the nginx-http-concat plugin. #MINIFY CSS WORDPRESS CODE#If JS or CSS files are minified in a theme as part of a build process, include the source files for the purpose of code review. ![]() CSS files are minified as well as concatenated, which reduces file size by removing unnecessary white space. By default, if enqueued, an application’s JavaScript and CSS files are concatenated in order to reduce the number of requests that occur on a single page load. ![]()
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