Browsers cache a lot of information (stylesheets, images, Java Script files, and more) so that when a visitor comes back to your site, the browser doesn't have to reload the entire page.Use a tool like YSlow to see if you already have an expiration date set for your cache.Google has more information about leveraging caching here.Your server response time is affected by the amount of traffic you receive, the resources each page uses, the software your server uses, and the hosting solution you use.Page speed is a measurement of how fast the content on your page loads.Page speed is often confused with "site speed," which is actually the page speed for a sample of page views on a site.To improve your server response time, look for performance bottlenecks like slow database queries, slow routing, or a lack of adequate memory and fix them. Learn more about optimizing your time to first byte.Content distribution networks (CDNs), also called content delivery networks, are networks of servers that are used to distribute the load of delivering content.
Extensions aren't inherently bad—they can add genuinely useful features to your browser—but it's a good idea to run an extension audit every once in a while and remove the ones you no longer rely on.Today's sites might contain video, audio, interactive elements, and stacks of images.Over time, under the weight of all that content, your browser can slow down. With a bit of timely maintenance and tidying up, you can ensure your browsing stays speedier for longer.Extensions are less common in the default browsers from Apple and Microsoft but in Safari, open up Preferences from the Safari menu and click Extensions; in Edge, click Extensions from the main app menu to see what's installed.You don't need to uninstall all the browser extensions on the menu.
Essentially, copies of your site are stored at multiple, geographically diverse data centers so that users have faster and more reliable access to your site.