How to Install and Configure LiteSpeed ​​Cache in WordPress: The Ultimate Guide

Is your WordPress website slow to load? Are you looking to improve website performance and SEO? In this article, we’ll explain how to properly and professionally install and configure LiteSpeed ​​Cache for WordPress.

LiteSpeed Cache es uno de los plugins de caché más eficaces del mercado, especialmente cuando tu hosting utiliza el servidor web LiteSpeed. Cuando está bien configurado, puede reducir mucho los tiempos de carga, lo que se traduce en una mejor experiencia de usuario y mayor visibilidad para Google.

Why use LiteSpeed ​​Cache in WordPress?

Before we begin, it’s important to understand why this plugin is highly recommended:

• Native LiteSpeed ​​support: Take full advantage of your server’s capabilities.

• All-in-one optimization: Includes page caching, image optimization (WebP), CSS/JS minification, and CDN.

• Direct impact on Core Web Vitals: Improves key metrics such as LCP, FID, and CLS.

• It’s free: The basic version offers more than enough functionality for most sites.

Prerequisites for using LiteSpeed ​​Cache

Not all hosting providers can support this plugin. For it to work, you’ll need:

1. Un hosting con servidor LiteSpeed (LSWS, OpenLiteSpeed).

2. An updated WordPress installation.

⚠️ Important: If your hosting uses Apache or Nginx, the plugin won’t run at full capacity, although some optimization options will still be available.

Step 1: Install the LiteSpeed ​​Cache Plugin

The installation process is identical to any other plugin.

1. Access your WordPress Dashboard.

2. Go to Plugins> Add New.

3. In the search engine, type “LiteSpeed ​​Cache”.

4. Click “Install” and then “Activate.”

Step 2: Basic and Essential LiteSpeed ​​Cache Configuration

Once activated, you’ll see a new item in the side menu called LiteSpeed ​​Cache. The configuration is extensive, but we’ll focus on the essentials for a fast and secure setup.

1. General Settings (Tab [1] Cache”)

Go to LiteSpeed ​​Cache > Cache.

• Enable cache: Turn ON the option to turn on the main cache.

• Tab [2] TTL (Time To Live): For a standard blog, a TTL of 4 hours (14400 seconds) is a good starting point.

2. Optimize CSS, JS and HTML

This is one of the most powerful sections. Go to LiteSpeed ​​Cache > LiteSpeed ​​Cache Page Optimization.

• CSS Settings Tab:

  • ✅ CSS Minify

  • ✅ CSS Combine

  • ✅ Generate Critical CSS (Very important for Core Web Vitals)

• JS Settings Tab:

  • ✅ JS Minify

  • ⚠️ JS Combine (Activate it, but if you see errors, deactivate it)

  • ✅ Defer JS (Or use “Delay JS” for better performance)

• HTML Settings Tab:

  • ✅ HTML Minify

🔧 Pro Tip: Activate one option at a time and make sure your site doesn’t break. Combining JS can cause conflicts with some themes or plugins.

3. Image Optimization (LiteSpeed ​​Cache > LiteSpeed ​​Cache Image Optimization)

LiteSpeed ​​can convert and serve your images in WebP format, a modern format that reduces weight without losing quality.

• Image Optimization Settings > Turn on Next Generation Image Format > WebP.

• Image Optimization Overview: Click Submit Optimization Request to have the plugin process all your images and create WebP versions.

4. Cache Settings for Mobile and Logged-In Users

• Mobile Cache: Under Cache > Mobile, enable this option if you have a responsive theme. It’s recommended.

• Cache for Logged-in Users: Under Cache > Logged-in Users, this is usually disabled to avoid problems with shopping carts or custom content.

Step 3: Purge and Final Test

After saving all changes, it is crucial to purge the cache.

1. Go to LiteSpeed ​​Cache > Toolbox > Purge.

2. Click Purge All.

3. Open your website in an incognito window and check its speed with tools like GTmetrix or PageSpeed ​​Insights.

You will see a significant improvement in your performance score.

Common Errors and Solutions

• The website looks broken: Disable CSS and JS merging. Check the “Critical CSS” section.

• Cache not updating: Make sure to clear the cache after making changes and check the TTL settings.

• WebP images are not being created: Check that the WordPress cron job is working correctly.

Conclusion

Properly configuring LiteSpeed ​​Cache is one of the best investments you can make for your WordPress site. With this guide, you’ve learned how to activate key options that improve speed, SEO, and user experience without needing to be an expert.

Do you have questions about a specific configuration? Leave us a comment and we’ll help you!