A CDN allows for the quick transfer of assets needed for loading Internet content including HTML pages, javascript files, stylesheets, images, and videos.ĬDNs can be quite simple to set up, and depending on your setup can provide a good increase in performance. If you’re not already caching your resources, you should consider using a Content Delivery Network.Ī content delivery network (CDN) refers to a geographically distributed group of servers which work together to provide fast delivery of Internet content. But we did utilize the images they provided, and it gave a healthy bump in performance. For Wordtracker we didn’t need to use the javascript and css files they provided, as we already optimize those via compression and minification in our deployment process. #Page speed insights downloadOne of the easier first steps is to download the optimized resources for the page, and replace them where possible. This tells the browser at which date the cache should expire. We set ours to GZIP to show that it is compressed. This defines the encoding of the response. “Max-age”, contrary to Expires, is relative to the time of the request. “Public” indicates that it may be cached, “s-maxage” is time in seconds till expiry of cache. The screenshot below highlights the important ones, these are optimal for best performance. Choose one file which is served by your webserver, you will see a new window pop up which has the response headers in. If you open the “developer tools” and switch to the Network tab, you should see a list of resources being used by your website. The best way to discover which headers your web server is serving, is through Chrome. We already had browser caching enabled, the only change we needed to make was with the expiration header. Leverage browser caching & enable compression This will mean the script loading does not block the rest of the page from loading. By splitting the SASS much like we did with the Javascript, we were able to produce a much smaller CSS file to download.īe sure to move slow loading items like third party Javascript to the bottom of your page’s body tag. We use SASS to generate our CSS and this was shared between the sales site and the core application. #Page speed insights fullThis meant we now had a super lightweight version just for the sales pages, and a full fat version only accessible to search. We had already designed our application around modules, so it allowed us to pick and choose more easily what should be included and where. To combat this we split our angular application into two. #Page speed insights codeCode that is only used in the core application and wasn’t accessible on the sales page was loaded anyway. When we originally ran the report we found that we were loading a large amount of unused javascript on the sales page. Wordtracker uses AngularJS for the majority of its javascript. How we moved forward Eliminate render-blocking Javascript and CSS in above-the-fold content #Page speed insights how toHow to proceed will depend heavily on the structure of your website and hosting options. Most of these areas are very site specific and clicking on the “Show how to fix” link will bring up suggestions specifically for your site. These were the suggestions it gave for the Wordtracker site: PageSpeed Insights evaluates how well a page follows common performance best practices and computes a score from 0-100 that estimates its performance headroomįortunately Google helps you with this, identifying issues and providing pointers and help on how to start fixing things. #Page speed insights updateIt’ll take time for those metrics to update with whatever changes you make to your site, so you’ll see the effect of changes over time. So don’t expect them to update each time you perform a report. Speed metrics are median values of all devices that report to Google. PageSpeed Insights incorporates data from the Chrome User Experience Report (CrUX) to display real-world performance data about a page. Looks like we’ve got some work to do here. Here’s what we got for on mobile before started optimizing. Visit enter the URL you want to optimize and hit analyze. This tool will help you improve it globally, on desktop and mobile. I only know how well my website performs on my devices. Now I don’t know about you, but everything about that sentence sounds great. PageSpeed Insights reports on the real-world performance of a page for mobile and desktop devices and provides suggestions on how that page may be improved. In addition, there’s plenty of evidence showing that faster times correlate with lower bounce rates. Google wants you to improve the speed of your site, and if you do so it’ll give you a better ranking.
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