Page speed is not a nice-to-have anymore. It is a direct Google ranking factor through Core Web Vitals, and it affects how long visitors stay on your site. A page that takes four seconds to load loses a large percentage of its visitors before they even see your content.
Divi 5 is already significantly faster than Divi 4 out of the box. But out-of-the-box is just the starting point. Here are the most effective things you can do to make your Divi 5 site run as fast as possible.
1. Choose the Right Hosting From the Start
No amount of optimization will overcome bad hosting. If your server is slow or underpowered, your site will be slow regardless of what else you do.
For Divi 5 sites, managed WordPress hosting gives you the best results. Providers like Cloudways, SiteGround, and WP Engine are built specifically for WordPress and handle a lot of server-level optimization automatically. They offer PHP 8.x support, server-side caching, and infrastructure that is tuned for WordPress performance.
Shared hosting on providers that do not specialize in WordPress is the most common cause of slow Divi sites. If your current host is not a WordPress-focused provider, upgrading your hosting will likely give you a bigger speed improvement than anything else on this list.
2. Enable Divi 5 Static CSS Generation
Divi 5 has a setting that generates static CSS files for each page rather than computing styles dynamically on every page load. This is one of the biggest performance improvements available within Divi itself.
To enable it, go to Divi in your WordPress dashboard, then Theme Options, then the Builder tab, and look for Static CSS File Generation. Turn this on. Once enabled, Divi writes the styles for each page to a static file that browsers can cache and reuse, which significantly reduces the work your server does on each visit.
3. Optimize Your Images Properly
Images are consistently the largest contributor to slow page load times. A single unoptimized hero image can add several seconds to your page load.
The right approach has three parts:
- Compress before uploading: Use a tool like Squoosh, TinyPNG, or ShortPixel to reduce file size before you upload anything to WordPress. Aim for images under 150KB for most uses, and under 80KB for smaller elements.
- Use WebP format: WebP images are significantly smaller than JPEG or PNG at the same visual quality. Most modern browsers support WebP. You can convert images to WebP using Squoosh or a WordPress plugin like Imagify.
- Enable lazy loading: WordPress enables this by default, but confirm it is active. Lazy loading means images below the fold only load when the visitor scrolls toward them, which makes the initial page load much faster.
4. Use a Caching Plugin
Caching stores a pre-built version of your pages so that WordPress does not have to rebuild each page from scratch every time someone visits. This reduces server load and dramatically speeds up response times for returning visitors and even first-time visitors.
WP Rocket is widely considered the best caching plugin for WordPress and works very well with Divi 5. It handles page caching, browser caching, file minification, and lazy loading all in one place. W3 Total Cache and LiteSpeed Cache are free alternatives that also work well, with LiteSpeed being the better choice if your host uses LiteSpeed servers.
5. Minify and Combine CSS and JavaScript
Even though Divi 5 generates cleaner code than Divi 4, there is still room to reduce the size of CSS and JavaScript files through minification. Minification removes unnecessary whitespace, comments, and characters from your files without changing how they work. This makes each file smaller and faster to download.
WP Rocket handles this automatically when you enable it. If you are using a free caching plugin, you may need to configure minification settings manually. Be careful when combining JavaScript files, as this can sometimes break functionality. Test thoroughly after enabling.
6. Use a CDN
A Content Delivery Network (CDN) stores copies of your site's static files (images, CSS, JavaScript) on servers around the world. When someone visits your site, they receive files from the server closest to them geographically, which reduces the time it takes for those files to travel across the internet.
Cloudflare offers a free CDN tier that works well for most Divi sites. If you are using Cloudways hosting, they have BunnyCDN integration built in. For sites with visitors in multiple countries, a CDN can make a noticeable difference in load times for international visitors.
7. Limit Plugin Usage
Every plugin you install adds code that loads on your pages. Some plugins are lightweight. Others load multiple CSS files and JavaScript files on every page, including pages where they are not even used.
Go through your installed plugins and ask yourself whether each one is truly necessary. For plugins that are used on specific pages only, look for options to limit which pages they load on. WP Rocket and other performance plugins often have settings to disable scripts on specific pages.
Common plugin categories that tend to add bloat: sliders, social sharing buttons, icon libraries, and form builders that load their assets globally.
8. Check Your Google PageSpeed Score Regularly
Google PageSpeed Insights at pagespeed.web.dev is your best free tool for measuring performance. Run your homepage and your most important landing pages through it regularly, particularly after making changes to your site.
Focus specifically on the Core Web Vitals metrics: Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP). These are the metrics Google uses directly as ranking signals. Aim for green scores on all three.
LCP should be under 2.5 seconds. CLS should be under 0.1. INP should be under 200 milliseconds. If any of these are in the red, the tool will usually tell you what is causing the problem.
9. Use a Lightweight Child Theme
If you are adding custom code to your Divi site, always do it through a child theme rather than editing the parent Divi theme directly. This is standard WordPress best practice. But beyond that, keep your child theme lightweight. Avoid loading large libraries or resources in your child theme that are not needed on every page.
10. Test on Mobile Specifically
Google primarily uses the mobile version of your site for indexing and ranking. This is called mobile-first indexing. A site that performs well on desktop but poorly on mobile will rank based on the mobile performance.
Always test your Divi 5 site on real mobile devices, not just by resizing your browser window. And run your mobile PageSpeed score separately from your desktop score. Mobile scores are typically lower, and that is the one that matters most for SEO.
Putting It All Together
Speed optimization is not a one-time task. It is something you check periodically, especially after adding new content, new plugins, or making structural changes to your site. Build the habit of running a PageSpeed check after any significant update.
If you want your Divi 5 site professionally optimized for both speed and search rankings, this is something I offer as part of my freelance services. Get in touch through the contact form and I can take a look at your specific site and give you an honest assessment of what would make the biggest difference.