W3speedster is a super fast WordPress Speed Optimization plugin, best used for fixing your slow & lagging WordPress website. It is an incredibly powerful WordPress website speed optimization plugin that focuses on heavy components of your website along with the top-ranking web pages.

With this super quick website performance optimization plugin, you can quickly optimize images with complete image size control, clean CSS and JS cache, and improve Google Page Speed by turning on lazy loading!

W3Speedster is an incredible WordPress performance optimization plugin that comes all-rounder, offering you several fully automated features:

CDN Integration
Optimize images
Lazy Loading
WebP Support
Minify CSS
Minify JavaScript
Defer parsing of JavaScript
Serve scaled images
Avoid CSS @import
Google Fonts Optimization
Delay JS

Note: For ease of use, the W3speedster plugin offers some manual features too. You can choose to edit and perform them manually.

W3speedster is a complete package of WordPress speed optimization services. The full-stack features of W3speedster can help you with quick solutions to page speed and performance issues.

The plugin comes super lightweight, offering you a quick plugin setup delivering you faster results. It is built to trigger the heavier elements of your website, such as – image optimization, CSS minification, and JS minification.

Users believe that W3speedster has given them the best performance improvement results. Whether it is about advanced image optimization, generating critical CSS, or leveraging browser cache. The plugin is specifically designed to improve the speed of the WordPress website.

In the fondness of minimalism, its easy user interface gives peace to a frustrating mind within a few clicks. The automated system of W3speedster lets you free from the stress of solving the easiest to the most complicated WordPress performance issues.

The best thing you can find about this WordPress speed optimization plugin is fast optimization in the fastest possible time. It is quick and accurate in targets.


How to Render Images in WebP Format When Using CDN or Cloudflare?
How to Create Critical CSS and clear cache in the w3speedster plugin?


Once you activate W3Speedster, the first thing is to run recommended settings from the notification bar and see how much faster your site has already become!

You can easily see the quick improvement in loading time W3Speedster has achieved just by running in its default configuration.

If you have advanced knowledge about “how the rendering of a website” works in the browser, you can start to further optimize your setup based on recommendations from performance testing tools like:
Pingdom Tools
Google Developers PageSpeed Insights

If you find your results vary with these tools, then it is best to use one tool, consecutively test your website 3 times and take the average of the results.


When testing options in W3Speedster, consider the following steps:

Step 1: Install and activate options one at a time, not all at once.
Note: Once check off the “Turn on Optimization” option, all optimization work will move to your live site. To keep up with the testing site, uncheck the Turn On Optimization option, the optimization work will automatically run on the tester URL eg. https://yoursitename.com/?tester=1.

Step 2: After activating each option, check your site in a browser window where you have not logged in to WordPress.
Note: An incognito/private window works well. By doing this, you will see immediately if any particular option causes any issues.

Step 3: Check the pages on your site.
Note: No need to check optimization on the tester URL, you can check directly on your live site. If anything doesn’t look right, don’t panic! Uncheck the “Turn on Optimization” option you have activated. Your site will return to normal again.


WordPress version greater than 5.5
PHP minimum version required 5.6
Writable .htaccess, wp-config.php (manual workaround available)
Writable wp-content (manual workaround available)

Free Version

Generate Critical CSS only for the homepage
Optimize up to 500 images
Free access to automated features:
– Enabling WebP support
– Image Quality control
– Lazy Loading
– CSS Minification
– JS Minification
– Combining inline and 3rd party scripts
– Combining Google Fonts

Pro Version

  • Generate Unlimited Critical CSS for the site
  • Optimize Unlimited Images



  1. Upload W3SPEEDSTER to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Go to “Settings -> W3speedster” area for setting panel.


    License Key
    Lazy Loading
    WebP Support
    Image Quality Control
    Excluded Pages
    CSS Minification
    Generates Critical CSS
    Force Lazyload Link Tag CSS
    Generates custom CSS
    JavaScript Minification
    Exclude JavaScript tags
    Delay JavaScript tags
    Lazy Load JavaScript
    Exclude JavaScript tags
    Delete js/css cache
    Delete Critical CSS
    Image Optimization


Who is W3Speedster for?

W3Speedster is for anyone with a WordPress website! It works for all large and small sites, no matter what the type. From a simple blog to an online store, W3Speedster will speed up the loading time! It is easy enough for non-technical WordPress users, but extensible enough that seasoned developers can customize it to their liking.

What are the requirements for W3Speedster?

A minimum of PHP 5.6 is required.
W3Speedster will work on any of these servers: Apache (with mod_rewrite, mod_expires, mod_deflate), NGINX, Litespeed or Windows. “Pretty” permalinks in WordPress are required.

Do I need coding know-how to use W3Speeedster?

No, not at all! W3Speedster is the only WordPress performance optimization plugin which integrates over 80% of web performance best practices. This means that you only need to install it, activate it, and make a few minor adjustments that you need: W3Speedster will automatically start optimizing your WordPress website, with no need to tweak the code.

Do you offer support if I need help?

Yes, the W3Speedster team is here to help you! Contact us any time and we’ll be happy to assist. You can find our contact information in the “Need Support” box in W3Speedster settings in WordPress.

Can I use W3Speedster on client sites?

You need to purchase a license for your client’s site. You can also contact us for bulk discounts.


23 augustus 2023
I was losing potential customers due to slow website speed. After using W3Speedster, my site loads fast, and my sales have gone up. The best part is that I didn’t need any technical skills to make it work. Highly recommended!
Lees 1 beoordeling

Bijdragers & ontwikkelaars

“W3SPEEDSTER” is open source software. De volgende personen hebben bijgedragen aan deze plugin.


Vertaal “W3SPEEDSTER” naar jouw taal.

Interesse in ontwikkeling?

Bekijk de code, haal de SVN repository op, of abonneer je op het ontwikkellog via RSS.