How to improve website loading speed and increase conversions: advanced optimization methods

Kaip pagerinti svetainės įkėlimo greitį ir padidinti konversijas: pažangūs optimizavimo metodai

Website speed is not only a matter of user experience – it is also one of the most important Google ranking factors. If your website loads too slowly, you lose both visitors and potential customers. In this article, I will share advanced optimization methods that I use when building fast, efficient, and SEO-friendly websites for my clients.

1. Inlining critical CSS

Instead of loading the entire stylesheet at once, only the critical CSS required for the first viewport is placed inside the website’s <head>. The rest is loaded asynchronously. This allows the content to appear faster for the user and reduces the Largest Contentful Paint (LCP).

2. Asynchronous full CSS loading with preload

Using this technique:

<link rel="preload" href="style.css" as="style" onload="this.onload=null;this.rel='stylesheet'">

… styles are prepared before they are needed, but they do not block HTML parsing.

3. Cleaning CSS with PurgeCSS

With PurgeCSS, all unused selectors are removed from the main stylesheet based on the specific page. For example, the homepage gets its own CSS file containing only the styles that are actually used.

4. font-display: swap and font preloading

Proper font loading via @font-face with font-display: swap and adding a <link rel="preload"> ensures that text appears immediately, even before the final font is rendered.

5. Using WebP images with a fallback

Modern browsers support WebP, but it is equally important to always provide a fallback JPG/PNG version. This is done using the <picture> element.

6. Prioritizing critical resources with fetchpriority=”high”

Images that are most important in the above-the-fold section are given the fetchpriority="high" attribute. This allows the browser to download them faster.

7. Removing unused scripts and styles on the homepage

Using wp_dequeue_style and wp_deregister_style, unnecessary files are removed from the homepage. This reduces the overall page weight.


Why does this matter?

These methods not only improve loading speed and Core Web Vitals but also increase the likelihood of conversions. Faster websites typically have a lower bounce rate and higher sales or inquiry results.

Looking for someone to implement all of this on your website?

We specialize in building websites that not only look professional but also perform at lightning speed. If you want your business to be visible in Google search and run without issues – get in touch with us.

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