{"id":319922,"date":"2015-02-25T21:08:56","date_gmt":"2015-02-25T20:08:56","guid":{"rendered":"https:\/\/wp-rocket.me\/blog\/?p=365"},"modified":"2021-07-29T10:30:06","modified_gmt":"2021-07-29T08:30:06","slug":"5-speed-optimization-myths","status":"publish","type":"post","link":"https:\/\/wp-rocket.me\/blog\/5-speed-optimization-myths\/","title":{"rendered":"5 Speed Optimization Myths"},"content":{"rendered":"<p><em>Last Update: May 2019.<\/em><\/p>\n<p>Optimizing your website for speed can be a complex issue, especially for non-developers. A lot of\u00a0guides and articles over-simplify\u00a0by providing\u00a0broad advice that isn\u2019t applicable to every website and shouldn\u2019t be taken at face value. Here\u2019s a few commonly-spouted tips that need some clarification.<\/p>\n<h2>1. Your performance &#8220;grade&#8221; matters<\/h2>\n<p>When you use one of the popular speed testing tools such as <a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\">Google PageSpeed Insights<\/a>, <a href=\"https:\/\/gtmetrix.com\/\">GTMetrix<\/a>, <a href=\"https:\/\/tools.pingdom.com\/\">Pingdom<\/a> etc your site is given a grade for its performance, along with some recommendations. Customers often feel that because they have a caching plugin they should be scoring almost perfect grades. Not only is this not the case, but <strong>it\u2019s also a waste of time to chase a perfect grade.<\/strong><\/p>\n<p>The bottom line &#8211; <a href=\"https:\/\/wp-rocket.me\/blog\/the-truth-about-google-pagespeed-insights\/\">the performance grade of your site does not matter<\/a>!<br \/>\n<strong>The only metric that matters is the actual load time of your page<\/strong>.<\/p>\n<h3>Why your grade doesn\u2019t matter<\/h3>\n<p>The primary reasons for having a faster site are:<\/p>\n<ul>\n<li>To improve SEO<\/li>\n<li>To improve user experience<\/li>\n<li>To increase conversions<\/li>\n<\/ul>\n<p>In none of these scenarios does your grade matter.<\/p>\n<p>When the Googlebot visits your site, it does not know your grade as given by each of the speed testing tools. <strong>It only sees how fast your page loads<\/strong>.<\/p>\n<h3>What is a grade good for?<\/h3>\n<p>The grades and recommendations can be helpful in providing <strong>a guideline for best practices<\/strong>, and spotting any red flags or bottlenecks on your site. But the fact is, <strong>a higher grade does not equal a faster page load time<\/strong>. I\u2019ve seen plenty of sites with high grades but slow speeds.<\/p>\n<p>For example, this site has a load time of 30 seconds &#8211; clearly something is wrong, but the <a href=\"https:\/\/wp-rocket.me\/blog\/correctly-measure-websites-page-load-time\/\">Pingdom grade<\/a> is: 96\/100:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-366\" src=\"https:\/\/wp-rocket.me\/wp-content\/uploads\/2\/good-grade-long-load-time.jpg\" alt=\"good-grade---long-load-time\" width=\"800\" height=\"129\" \/><\/p>\n<p>Additionally <a href=\"https:\/\/wp-rocket.me\/blog\/pingdom-vs-gtmetrix-vs-webpagetest-different\/\"><strong>each tool you use will grade your site differently<\/strong><\/a> &#8211; \u00a0which is \u201cright\u201d? So don\u2019t worry about chasing grades, just focus on the actual load time.<\/p>\n<p>Sometimes the suggestions that are made are helping in improving load time but sometimes they will be hard to implement for little to no benefit.<\/p>\n<p>A classic example of this is when Google PageSpeed suggests moving CSS and JS files to the footer. Some JS files can be moved to the footer, but others will break your site if you move them. Likewise, if you load your site without CSS styles, it will appear broken and provide a terrible user experience.<\/p>\n<h2>2. You need<em> all<\/em>\u00a0types of caching<\/h2>\n<p>There are several different types of caching available and some articles will suggest that you need to implement them all &#8211; <a href=\"https:\/\/wp-rocket.me\/blog\/wordpress-page-caching-explained-in-plain-english\/\">page caching<\/a>, database caching, <a href=\"https:\/\/wp-rocket.me\/blog\/memcached-what-is-it-how-to-use-it\/\">Memcached<\/a> etc.<\/p>\n<p>On a site without caching, when a visitor hits a page on your site, the server, via PHP has to gather and assemble from the database the various page components and content and send them back to the browser, on the fly. That takes quite a bit of time and effort.<\/p>\n<p>By contrast, page caching (which is what <a href=\"https:\/\/wp-rocket.me\/features\/\">WP Rocket and other plugins do<\/a>) generates static HTML files of your content, which is faster to serve to your visitors than having PHP generate your pages from scratch every time.<\/p>\n<p>So this means that when you have page caching and a visitor comes to your site, they are not even touching the database at all. So in many scenarios where you have page caching, <strong>you don\u2019t need to cache the database as well<\/strong>. This is true for many websites.<\/p>\n<p>There are some circumstances in which <a href=\"https:\/\/wp-rocket.me\/blog\/redis-object-caching\/\">database caching<\/a> may be necessary but they are likely to be not the average site. For example, if you have a highly dynamic site where page caching is not realistic, database caching would be helpful. The average blogger does not have to worry about that.<\/p>\n<p>Some forms of caching are run at the server level so you may be restricted as to what you can do if you are on a shared or managed hosting platform &#8211; you\u2019ll be at the mercy of your host. But page caching can be implemented via a WordPress plugin so it\u2019s easy for the average site owner to implement.<\/p>\n<h2>3. You <em>only<\/em> need a caching plugin<\/h2>\n<p>A caching plugin is an invaluable tool in your kit for creating a speedy website.<br \/>\n(<a href=\"https:\/\/wp-rocket.me\/pricing\/\">You can get WP Rocket now<\/a>, and check by yourself the value it can provide to your site!)<\/p>\n<p>But <strong>it shouldn\u2019t be the only one<\/strong>. On a WordPress site there are many layers that can be optimized. Admittedly, some are easier than others for the layperson to optimize.<\/p>\n<p>A caching plugin (when correctly configured) will always help, but it\u2019s the final layer in creating a fast site. It can just be a band aid if your site is inefficient in general.<\/p>\n<p>Other layers that need to be considered are:<\/p>\n<h3><strong>Web hosting<\/strong><\/h3>\n<p>This is the foundation so invest in great hosting! <strong>If your hosting is poor, you\u2019re a little bit doomed<\/strong> and there will always be a ceiling on how fast your site will run. <a href=\"https:\/\/wp-rocket.me\/blog\/how-fast-is-my-server\/\">Awesome web hosting doesn\u2019t have to be expensive<\/a>.<\/p>\n<p>We have a couple of hosts that we recommend (and as a WP Rocket customer you would be eligible for a discount) that won\u2019t break the bank such as SiteGround or <a href=\"https:\/\/wp-rocket.me\/resources\/kinsta\/\">Kinsta<\/a>. There are many great hosts out there &#8211; <strong>don\u2019t just pick the cheapest, you will end up paying in other ways!<\/strong><\/p>\n<h3><strong>Your theme<\/strong><\/h3>\n<p>The bulk of the code on your site is coming from your theme so an inefficiently coded theme will cripple you. <strong>This is an area that can be hard to fix if you are not a developer<\/strong> so in some cases it might be worth hiring one proficient in speed optimization to tweak your theme for performance.<\/p>\n<p>(We tested some of the <a href=\"https:\/\/wp-rocket.me\/blog\/the-10-fastest-free-wordpress-themes-in-2019\/\">fastest free WordPress themes<\/a>: check them out!)<\/p>\n<p>Generally those \u201ckitchen sink\u201d type themes that include every feature under the sun, are going to come with a certain amount of weight &#8211; extra scripts being loaded in that you\u2019re not actually using etc. If you have one of those themes, <strong>don\u2019t activate all the available features<\/strong> (like 3 different sliders) unless you\u2019re actually using them.<\/p>\n<h3><strong>Your plugins<\/strong><\/h3>\n<p>Contrary to popular belief <strong>it\u2019s not the <a href=\"https:\/\/wp-rocket.me\/blog\/wordpress-plugins-many\/\">QUANTITY of plugins<\/a> you have that counts, it\u2019s the quality<\/strong>. It just takes one poorly-written plugin to bring your site to a grinding halt. Of course, you should be judicious in the plugins that you select and you should delete any that you\u2019re not using.<\/p>\n<h3><strong>Bottom line<\/strong><\/h3>\n<p>If you put a rocket on a sports car and a rocket on a tank, the sports car will still go faster because it&#8217;s streamlined and built for speed. The same applies to your website.<\/p>\n<p><strong>Caching cannot fix poor code<\/strong>, it can only mitigate the effects to a certain extent. The better all the other components of your website are, the better and faster your site will be all around.<\/p>\n<h2>4. Less HTTP requests = faster website<\/h2>\n<p>A common guideline is that you should to <a href=\"https:\/\/wp-rocket.me\/blog\/reduce-http-requests-speed-wordpress-site\/\">reduce the number of HTTP requests<\/a> your site has to make to the server in order to render the page. To a large extent this is true and as a general guideline, <strong>reducing the number of requests is a good practice<\/strong>. But as with everything, it\u2019s a little more nuanced than that.<\/p>\n<p>This commonly crops up regarding minification. Most minification tools take all your CSS files and put them together in one big file (concatenation). So if you originally had 8 CSS files on your site, you now have 1. So that\u2019s just 1 HTTP request instead of 8. Better right?<\/p>\n<p>Well, maybe, maybe not. Modern browsers are able to download multiple files at a time in parallel. So that means that <strong>it might be more efficient and faster for your browser to download several smaller files all at once<\/strong>, then one large file. The results will vary from site to site so you will have to test this for yourself.<\/p>\n<p>HTTP\/2 has been a game changer here.<\/p>\n<p>Here is an illustration of how the number of requests is not the best indicator of efficiency.<\/p>\n<p>On my test site I started with this &#8211; 43 requests and a 639 ms load time:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-367\" src=\"https:\/\/wp-rocket.me\/wp-content\/uploads\/2\/2-requests-less-half-the-load-time.png\" alt=\"2 requests less, half the load time\" width=\"416\" height=\"73\" \/><\/p>\n<p>By simply adding two, large unoptimized images to the page, I only add 2 http requests, but the load time doubles due to the page size:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-368\" src=\"https:\/\/wp-rocket.me\/wp-content\/uploads\/2\/2-extra-requests-double-load-time.png\" alt=\"2 extra requests, double load time\" width=\"433\" height=\"79\" \/><\/p>\n<p>So you cannot focus on just one indicator but have to take a holistic approach to optimization.<\/p>\n<div id=\"om-ulrdquoprwqcywqbbgci-holder\"><\/div>\n\t<script>(function (d, u, ac) {\n\t\t\tvar s = d.createElement('script')\n\t\t\ts.type = 'text\/javascript'\n\t\t\ts.src = 'https:\/\/a.omappapi.com\/app\/js\/api.min.js'\n\t\t\ts.async = true\n\t\t\ts.dataset.user = u\n\t\t\ts.dataset.campaign = ac\n\t\t\td.getElementsByTagName('head')[0].appendChild(s)\n\t\t})(document, 20440, 'ulrdquoprwqcywqbbgci')<\/script>\n<h2>5. A CDN is a must<\/h2>\n<p>This is another extremely common piece of advice that shouldn&#8217;t be taken at face value.<\/p>\n<p>The point about CDNs is that ideally you want to serve assets (e.g. images, CSS files, JS files) to your visitor from the closest location to them as possible to reduce latency.<\/p>\n<p>Latency is the time it takes for the server to send content to the user\u2019s browser. The further away from the server the user is, the longer it takes to deliver those assets.<\/p>\n<p>Imagine throwing a baseball to a teammate. The further away your teammate is, the longer it takes the ball to get to him\/her. With a CDN, content is distributed amongst servers around the world so that it can be served from the closest point to the user and therefore the user sees it faster.<\/p>\n<p>So <strong>a <a href=\"https:\/\/wp-rocket.me\/blog\/difference-cdn-and-domain-sharding\/\">CDN really only makes sense if your audience is distributed internationally<\/a><\/strong>, otherwise it may be pointless and an unnecessary expense.<\/p>\n<p>You also have to keep in mind that because <strong>a CDN is an external server<\/strong>, the browser has to do a DNS lookup to reach that external server and each lookup takes a little time (approx 200ms).<\/p>\n<p>So you have to make sure that the speed gain you get from the CDN outweighs the <strong><a href=\"https:\/\/wp-rocket.me\/blog\/how-to-reduce-dns-lookups-to-speed-up-your-wordpress-site\/\">DNS lookup<\/a> and resolution time<\/strong>.<\/p>\n<p><strong>Speed optimization is definitely not a \u201cone size fits all\u201d process<\/strong>. It requires patience and sometimes trial and error to find the best solution for your site. Any tip or advice you come upon will have to be tested in your specific circumstance to see if it will work for you.<\/p>\n<p><a href=\"https:\/\/www.flickr.com\/photos\/rhk313\/3707813723\/\" target=\"_blank\" rel=\"noopener noreferrer\">Header image courtesy Rami<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Optimizing your website for speed is a complex issue. A lot of guides over-simplify by offering broad advice that shouldn\u2019t be taken at face value. Here\u2019s a few commonly-spouted tips that need some clarification.<\/p>\n","protected":false},"author":3200,"featured_media":369,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"kia_subtitle":"","footnotes":""},"categories":[63],"tags":[],"class_list":["post-319922","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wordpress-cache"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>5 WordPress Speed Optimization Myths<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wp-rocket.me\/blog\/5-speed-optimization-myths\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5 WordPress Speed Optimization Myths\" \/>\n<meta property=\"og:description\" content=\"Optimizing your website for speed is a complex issue. 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