Plugin
Updated
WP Speed of Light Pro
WP Speed of Light Pro by JoomUnited is a WordPress performance plugin that gathers caching, image compression, file minification and database cleanup into one settings area. It helps site owners cut page weight, reduce server work and keep an eye on load times from the dashboard.
- Version
- 3.3.5
- Released
- Jul 17, 2025
- Developer
- JoomUnited
- Type
- WordPress plugin
- Licence
- GPL
- Included in
- Every plan, or $3.99 a year on its own
What’s new in WP Speed of Light Pro 3.3.5
Version 3.3.5
Latest
- NewMerged the free versions of WP Speed of Light into the WP Speed of Light Pro
- NewRedesigned the plugin settings interface
- NewEnhanced database cleanup with new options to remove orphaned data
What it does
Slow pages usually come from several sources at once: heavy images, many separate CSS and JavaScript files, repeated database queries and a server that rebuilds every page on each visit. This plugin tackles those areas together. A static cache system serves lightweight HTML versions of your pages, cache preloading prepares those versions ahead of time, and browser caching with GZIP compression helps repeat visits use less bandwidth.
Beyond caching, the plugin compresses images, lazy loads them as visitors scroll, combines and minifies CSS, JavaScript and font files, and adds DNS prefetching for external resources. A database tool tests for slow queries caused by plugins or themes and removes leftover data, including orphaned entries. It works with CDNs such as Cloudflare, Amazon Cloudfront and KeyCDN, and lets you run Google PageSpeed Insights tests in the dashboard to track results.
Best for
- Bloggers who want lighter, faster loading pages
- Agencies tuning performance across several client WordPress sites
- Image-heavy sites that need compression and lazy loading
Features
Static page cache
Generates lightweight HTML versions of your pages so the server handles fewer database queries and can deliver pages to visitors with less work.
Cache preloading
Builds cached versions of pages in advance, so visitors get a cached page even right after the cache has been cleared.
Image compression
Reduces image file sizes by up to 80 percent while keeping visual quality, which lowers the total weight of your pages.
Progressive lazy loading
Loads images only as they enter the visitor's viewport, using a smooth progressive effect so offscreen images do not slow the first view.
Minification and file grouping
Combines and minifies CSS, JavaScript and font files to cut down the number of HTTP requests each page makes.
Scheduled cache cleaning
Clears the cache on a set interval, when content is updated, or by user group, so cached pages stay current.
Database testing and cleanup
Finds slow database queries caused by plugins or themes and cleans up stored data, including options for removing orphaned entries.
CDN support with cache purge
Connects with CDNs like Cloudflare, Amazon Cloudfront and KeyCDN, and purges their cache automatically when your site cache is cleared.
WP Speed of Light Pro older versions
- 3.3.4Aug 24, 20241 fix
- 3.3.3Aug 11, 20232 fixes
- 3.3.2Apr 18, 20231 fix
Members and buyers of this product can download older versions.
Questions about WP Speed of Light Pro
Does this work with my CDN?
It supports major CDNs including Cloudflare, Amazon Cloudfront and KeyCDN. When you connect one, the plugin can purge the CDN cache automatically so visitors receive the latest version of your content after changes.
Do I still need the free WP Speed of Light plugin?
No. The free features have been merged into the Pro plugin, so caching, minification, database cleanup and the other tools all run from a single plugin with one redesigned settings interface.
Can I measure whether my site is actually faster?
Yes. The plugin integrates Google PageSpeed Insights, letting you run several speed tests from your WordPress dashboard and compare results over time as you adjust caching, images and file settings.
How does it handle images?
It compresses image files by up to 80 percent without visible quality loss and adds progressive lazy loading, so images load only when they come into view as the visitor scrolls down the page.
Is WP Speed of Light Pro free?
The code of WP Speed of Light Pro is licensed under the GPL, so anyone may use, change and share it. GPL Feast is a paid service: a plan or a single purchase gives you the download and automatic updates. The developer's own support, licence key and online services are not included.
Which version of WP Speed of Light Pro is this?
Version 3.3.5, released Jul 17, 2025. New versions appear here when the developer publishes them, and members get them as automatic updates.
How do I update WP Speed of Light Pro?
Install the free GPL Feast Updater on your site and connect it with your API key. It installs new versions of WP Speed of Light Pro automatically and keeps a backup, so you can roll back.
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