Below are the all the features that are included in WP Speed of Light plugin. You can even get more details on the feature by visiting the main product page.

Features in WP Speed of Light Free version

- Features included in the FREE plugin version -

WordPress static cache

Add a page cache system to WordPress website: Minimise the requests and serve an ultralight HTML file

Minify WordPress content

Minification refers to the process of removing unnecessary or redundant data to serve smaller files, smaller is faster!

Remove query strings

Improve your Page Speed score by removing query strings from CSS and JS files.

Site speed testing

Test your WordPress speed using webpagetest.org, store and compare your speed test results

Gzip compression

Send compressed (Gzipped) data to users. The smart compression uses the server module in priority then the htaccess if not possible.

Browser cache

With browser caching, static contents (JS, CSS, images) are stored in the browser therefore served quickly from the user hard drive when brownsing another page.

Cache clean on save

Clean the cache automatically when a page, post or any content is saved or modified. It works with Gutenberg AJAX saving too

Database speed test

Measure your WordPress database queries execution time, store and compare your results

Group and serve files

Grouping several CSS and JS files into a single file will minimize the HTTP requests number

Mobile devices cache

Cache device detection: Depending of your theme, cache may require to be served by device type (desktop, tablet, mobile)

Browser cache cleanable

The plugin can give instructions to clear the browser cache that stores CSS, JS and images

Cache URL exclusion

Possibility to include or exclude your pages from cache one by one or a set of URL using for example: domain.com/blog*

Features in WP Speed of Light Pro Addon

Features included only in the WP Speed of Light Pro Addon version


Image Compression

Compress your images by up to 80% without any visual loss of quality. Get 1GB or 3GB of image compression included

Google Fonts - Local Fonts

Group all the local fonts and the Google fonts in a single file. One single file is loaded faster!

DNS Prefetching

The DNS prefetching will pre-load DNS information on external domain links. Useful when when you use frenquently the same domains in external links

Image Lazy Loading

Load only images when it’s visible in the by user (on scroll), remove up to 60% of your page weight with a single setting!

Visual Files Exclusion

Scan your website, exclude one or several files from the resources group and minify in a click

Database Automatic Cleanup

The database cleanup from post revisions, trash, spam... can be made automatically at a defined frequency

Cache Pre-Loading

User that comes after a page cache cleanup won't have to wait for the cache generation, it's automatically regenerated!

Cache Exclusion

Exclude a set of URL from cache using roles or a set of users using WordPress User Roles

Defer loading

Possibility to defer script loading in page footer, remove the render blocking heavy resources to be loaded in your page header


Not sure about how to use the plugin for your website? Additionally to the support, our team can help you with the speed up optimization of your website