Search Engine (SEO) &amp; Performance Optimization (WPO) via caching. Integrated caching: CDN, Page, Minify, Object, Fragment, Database support.

W3 Total Cache

<p>W3 Total Cache (W3TC) improves the SEO, Core Web Vitals and overall user experience of your site by increasing website performance and reducing load times by leveraging features like content delivery network (CDN) integration and the latest best practices.</p>
<p>W3TC is the <strong>only</strong> web host agnostic Web Performance Optimization (WPO) framework for WordPress trusted by millions of publishers, web developers, and web hosts worldwide for more than a decade. It is the total performance solution for optimizing WordPress Websites.</p>
<p><em>BENEFITS</em></p>
<ul>
<li>Improvements in search engine result page rankings, especially for mobile-friendly websites and sites that use SSL</li>
<li>At least 10x improvement in overall site performance (Grade A in <a href="https://www.webpagetest.org/" rel="nofollow ugc">WebPagetest</a> or significant <a href="http://code.google.com/speed/page-speed/" rel="nofollow ugc">Google PageSpeed</a> improvements) <strong>when fully configured</strong></li>
<li>Improved conversion rates and &#8220;<a href="http://googlewebmastercentral.blogspot.com/2009/12/your-sites-performance-in-webmaster.html" rel="nofollow ugc">site performance</a>&#8221; which <a href="http://googlewebmastercentral.blogspot.com/2010/04/using-site-speed-in-web-search-ranking.html" rel="nofollow ugc">affect your site&#8217;s rank</a> on Google.com</li>
<li>&#8220;Instant&#8221; repeat page views: browser caching</li>
<li>Optimized progressive render: pages start rendering quickly and can be interacted with more quickly</li>
<li>Reduced page load time: increased visitor time on site; visitors view more pages</li>
<li>Improved web server performance; sustain high traffic periods</li>
<li>Up to 80% bandwidth savings when you minify HTML, minify CSS and minify JS files.</li>
</ul>
<p><em>KEY FEATURES</em></p>
<ul>
<li>Compatible with shared hosting, virtual private / dedicated servers and dedicated servers / clusters</li>
<li>Transparent content delivery network (CDN) management with Media Library, theme files and WordPress itself</li>
<li>Mobile support: respective caching of pages by referrer or groups of user agents including theme switching for groups of referrers or user agents</li>
<li>Accelerated Mobile Pages (AMP) support</li>
<li>Secure Socket Layer (SSL/TLS) support</li>
<li>Caching of (minified and compressed) pages and posts in memory or on disk or on (FSD) CDN (by user agent group)</li>
<li>Caching of (minified and compressed) CSS and JavaScript in memory, on disk or on CDN</li>
<li>Caching of feeds (site, categories, tags, comments, search results) in memory or on disk or on CDN</li>
<li>Caching of search results pages (i.e. URIs with query string variables) in memory or on disk</li>
<li>Caching of database objects in memory or on disk</li>
<li>Caching of objects in memory or on disk</li>
<li>Caching of fragments in memory or on disk</li>
<li>Caching methods include local Disk, Redis, Memcached, APC, APCu, eAccelerator, XCache, and WinCache</li>
<li>Minify CSS, Minify JavaScript and Minify HTML with granular control</li>
<li>Minification of posts and pages and RSS feeds</li>
<li>Minification of inline, embedded or 3rd party JavaScript with automated updates to assets</li>
<li>Minification of inline, embedded or 3rd party CSS with automated updates to assets</li>
<li>Defer non critical CSS and Javascript for rendering pages faster than ever before</li>
<li>Defer offscreen images using Lazy Load to improve the user experience</li>
<li>Browser caching using cache-control, future expire headers and entity tags (ETag) with &#8220;cache-busting&#8221;</li>
<li>JavaScript grouping by template (home page, post page etc) with embed location control</li>
<li>Non-blocking JavaScript embedding</li>
<li>Import post attachments directly into the Media Library (and CDN)</li>
<li>Leverage our multiple CDN integrations to optimize images</li>
<li>WP-CLI support for cache purging, query string updating and more</li>
<li>Various security features to help ensure website safety</li>
<li>Caching statistics for performance insights of any enabled feature</li>
<li>Extension framework for customization or extensibility for Cloudflare, WPML and much more</li>
<li>Reverse proxy integration via Nginx or Varnish</li>
<li>WebP Converter extension provides WebP image format conversion from common image formats (on upload and on demand)</li>
</ul>
<h3>PAGESPEED SCORE IMPROVEMENTS</h3>
<p>To help you understand the impact of individual features on your website&#8217;s performance, we&#8217;ve tested each feature separately to see its effect on Google PageSpeed scores. While optimal results come from configuring several different caching tools together, the following individual features also show significant improvements on their own:</p>
<h4>Remove Unused CSS/JS</h4>
<p>This feature removes CSS and JavaScript files that are not needed for the current page, reducing the load time.</p>
<ul>
<li>Added over 27 points to the Google PageSpeed score (Before: 57.2 / After: 86.7)</li>
<li>Reduced the Potential Savings From Unused JavaScript from 127.5 KiB to 84 KiB</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/remove-scripts/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>Full Site Delivery</h4>
<p>Full Site Delivery optimizes the delivery of your entire site, enhancing the server response time.</p>
<ul>
<li>Added a 99% performance enhancement  to the Average Server Response Time (Before: 3413 ms / After: 34 ms)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/fsd-full-site-delivery/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>Eliminate Render Blocking CSS</h4>
<p>This feature eliminates CSS that blocks the rendering of your page, speeding up the initial load time.</p>
<ul>
<li>Added over 17 points to the Google PageSpeed score (Before: 53.75 / After: 71)</li>
<li>Reduced the Potential Savings From Render-Blocking Resources by over 94% (Before: 2432.5 ms / After: 125 ms)</li>
<li>Improved the Largest Contentful Paint time by over 56% (Before: 7s / After: 3.04s)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/eliminate-render-blocking-css/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>Delay Scripts</h4>
<p>Delay Scripts postpones the loading of certain scripts until they are needed, reducing initial load times.</p>
<ul>
<li>Added 14 points to the Google PageSpeed Performance score (Before: 54.25 / After: 68.5)</li>
<li>Reduced the Time Third-Party Code Blocked The Main Thread For by 62% (Before: 825 ms / After: 197.5 ms)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/delay-scripts-test/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>Rest API Caching</h4>
<p>This feature caches API responses, reducing server load and speeding up API interactions.</p>
<ul>
<li>Reduced the Average Server Load by 40% (Before: 0.62 / After: 0.37)</li>
<li>Sped up API Responses by 84.5% (Before: 968ms / After: 150ms)</li>
<li>Reduced the Average Server Load by 24% under during a major traffic spike (Before: 34.55 / After: 26.19)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/rest-api-testing/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>WebP Images</h4>
<p>Converts images to the WebP format, which is more efficient and faster to load.</p>
<ul>
<li>Added over 9 points to the Google PageSpeed score (Before: 84.67 / After: 93.83)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/webp/" rel="nofollow ugc">View the test results</a></li>
</ul>
<h4>Lazy Load Google Maps</h4>
<p>Delays the loading of Google Maps until the user interacts with them, reducing initial load time.</p>
<ul>
<li>Added 10 points to the Google PageSpeed score (Before: 66 / After: 76)</li>
<li>Reduced the Total Blocking Time Performance score by 72% (Before: 287.5 ms / After: 80 ms)</li>
<li><a href="https://www.boldgrid.com/support/w3-total-cache/pagespeed-tests/lazy-load-maps/" rel="nofollow ugc">View the test results</a></li>
</ul>
<p>Speed up your site tremendously, improve core web vitals and the overall user experience for your visitors without having to change your WordPress host, theme, plugins or your content production workflow.</p>
<h3>What users have to say:</h3>
<ul>
<li>Read <a href="https://twitter.com/w3edge/favorites" rel="nofollow ugc">testimonials</a> from W3TC users.</li>
</ul>
<h3>Who do I thank for all of this?</h3>
<p>It&#8217;s quite difficult to recall all of the innovators that have shared their thoughts, code and experiences in the blogosphere over the years, but here are some names to get you started:</p>
<ul>
<li><a href="http://stevesouders.com/" rel="nofollow ugc">Steve Souders</a></li>
<li><a href="http://mrclay.org/" rel="nofollow ugc">Steve Clay</a></li>
<li><a href="http://wonko.com/" rel="nofollow ugc">Ryan Grove</a></li>
<li><a href="http://www.nczonline.net/blog/2009/06/23/loading-javascript-without-blocking/" rel="nofollow ugc">Nicholas Zakas</a></li>
<li><a href="http://rtdean.livejournal.com/" rel="nofollow ugc">Ryan Dean</a></li>
<li><a href="http://gravitonic.com/" rel="nofollow ugc">Andrei Zmievski</a></li>
<li>George Schlossnagle</li>
<li>Daniel Cowgill</li>
<li><a href="http://toys.lerdorf.com/" rel="nofollow ugc">Rasmus Lerdorf</a></li>
<li><a href="http://notmysock.org/" rel="nofollow ugc">Gopal Vijayaraghavan</a></li>
<li><a href="http://eaccelerator.net/" rel="nofollow ugc">Bart Vanbraban</a></li>
<li><a href="http://xcache.lighttpd.net/" rel="nofollow ugc">mOo</a></li>
</ul>
<p>Please reach out to all of these people and support their projects if you&#8217;re so inclined.</p>


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