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WSO

WP Speed of Light

v3.3.5
by JoomUnited · 4.7 (87 reviews)

WP Speed of Light is a WordPress speedup plugin and load time testing. Cache, Gzip, minify, group, Lazy Loading, CDN

8K+ active installs Updated Nov 25, 2024 Tested to 6.7.2 Requires PHP 5.6
Closed on WordPress.org

The author asked WordPress.org to close this plugin on Jun 17, 2026. It can no longer be installed from WordPress.org, so the live demo and the download are off. See maintained alternatives

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About WP Speed of Light

WP Speed of Light is a powerful plugin for WordPress that optimizes your website's speed. It includes features like static caching, file minification and grouping, database cleanup, CDN integration, and more. It also offers a PRO ADDON upgrade with additional speed optimization features.

Changelog

3.3.5

  • Fix : Update the message of the PHP version check tool

3.3.4

  • Fix : Error in the plugin feedback

3.3.3

  • Fix : Minor HTML attribute error

3.3.2

  • Fix : Some PHP warnings

3.3.1

  • Add : Update JU translation tool with autosaving
  • Add : Instant installation of translation and help texts
  • Fix : Missing user roles in disable optimization for
  • Fix : Automatically preload cache from home page

3.3.0

  • Add : Addon feature: Image dimensions
  • Fix : Exclude some WooCommerce pages (cart, my account, checkout) not working

3.2.2

  • Fix : Error when clearing cache in some cases

3.2.1

  • Fix : Error when enable minify css in some cases
  • Fix : PHP warning when clean cache

3.2.0

  • Add : Compatiable with WP Speed of Light Addon 3.2 features

3.1.1

  • Fix : Missing Apache modules warnings in NginX server
  • Fix : Remove empty space in settings

3.1.0

  • Add : Automatically preload cache from the home page
  • Fix : Group & Minify features don’t work independently

3.0.0

  • Add : [breaking changes] Rewriting grouping js to avoid conflicts between js files as much as possible
  • Add : [breaking changes] Rewriting code base to follow PSR4
  • Add : Compatibility with Simple Custom CSS plugin
  • Add : Cache exclusion works with wildcard
  • Add : Allowing to group and or minify javascript independently
  • Fix : Minification of calc function removing required spaces

2.6.11

  • Fix : Install formal language in the plugin translation tool

2.6.10

  • Fix : Update document link

2.6.9

  • Fix : Conflict with DIVI page builder
  • Fix : Change text for tooltip on plugin dashboard

2.6.8

  • Fix : Tooltip cannot be displayed in admin panel
  • Fix : Total blocking time issues with defer

2.6.7

  • Fix : Remove the blank characters in javascript minified

2.6.6

  • Add : Google PageSpeed Insights integration and remove WebPageTest api from speed analysis

2.6.5

  • Fix : Grouping js conflict with select2 modules
  • Fix : Settings cannot be saved when using another translation plugin

2.6.4

  • Fix : Change data statistics method to increase performance in admin panel
  • Fix : CSS @import rule doesn’t work when group all CSS files

2.6.3

  • Fix : Remove strict mode in js file when grouping
  • Fix : Grouping js conflict with Braintree For WooCommerce

2.6.2

  • Fix : Translation sharing issue in some browsers

2.6.1

  • Fix : Group feature break style

2.6.0

  • Add : Compatibility Addon feature: WooCommerce speedup module
  • Fix : Fix responsive for the setting page

2.5.7

  • Fix : Change the way of getting technical data in feedback
  • Fix : Error when retrieving ghostscript information

2.5.6

  • Fix : Material fonts missing

2.5.5

  • Fix : Improve Apache module activation
  • Fix : Blog URL is not correct when using CDN rewrite
  • Fix : Rewrite Ju-feedback & Ju-rewrite

2.5.4

  • Add : Possibility to check wp-config.php file when active cache system
  • Fix : Change the interface of Varnish cache

2.5.3

  • Fix : Change the interface of feedback opt-in

2.5.2

  • Add : Opt In feedback
  • Add : Possibility to check if wp-config.php file is not writable
  • Fix : Change dashboard style & elements sizes

2.5.1

  • Fix : Potential RCE vulnerability

2.5.0

  • Fix : Change dashboard style & elements sizes
  • Fix : Fix Jutranslation url
  • Fix : Check version requirements

2.4.6

  • Fix : Exclude URL from the image lazy loading
  • Fix : Error on installer wizard (with Gutenberg plugin)
  • Fix : Change dashboard font & elements sizes

2.4.5

  • Add : Implement lazyloading exclusion by id or class selector
  • Fix : Restore comments with inline scripts in minify script
  • Fix : Blank screen when grouping css

2.4.4

  • Fix : Fix check module in system check

2.4.3

  • Fix : Admin page loading time improved

2.4.2

  • Fix : Multisite admin toolbar disappear

2.4.1

  • Fix : Font url to avoid breaking URLs

2.4.0

  • Add : Rewrite code from “Simple Cache” and “Autoptimize”
  • Add : After a cache cleanup, auto-reload the page
  • Add : Cleanup cache on Gutenberg save content
  • Fix : Remove direct CURL calls (security fix)
  • Fix : Admin responsive configuration & Speed optimization

2.3.3

  • Fix : Warning PHP in front end when using exclude
  • Fix : Fix style for safari browser
  • Add : WordPress 5.0 compatibility

2.3.2

  • Fix : Setting dropdown menu in Firefox
  • Fix : Speed Analysis with invalid API Key now return a proper error message

2.3.1

  • Fix : Installer error

2.3.0

  • Add : New UX for Speed Otimization and Speed Testing
  • Add : Possibility to search in plugin menus and settings
  • Add : New plugin installer with quick configuration
  • Add : Environment checker on install (PHP Version, PHP Extensions, Apache Modules)
  • Add : System Check menu to notify of server configuration problems after install
  • Add : Server testing before plugin activation to avoid all fatal errors

2.2.2

  • Add : Add actions and filters for developers

2.2.1

  • Fix : Sharing translations

2.2.0

  • Add : Import/Export plugin configuration
  • Add : Exclude URLs from the lazy loading

2.1.3

  • Add : Enhance code readability and performance with phpcs

2.1.2

  • Fix : Fix active cache system and expire headers option

2.1.1

  • Add : Integrate UX with WP Speed of Light Addon 2.1 features

2.1.0

  • Add : Option to disable the WordPress REST API
  • Add : Option to disable the WordPress RSS feeds
  • Add : Cache external resources such as scripts served from Google (served locally)

2.0.5

  • Fix : Files starting by // opened locally
  • Fix : Lower class name stdClass

2.0.4

  • Fix : Remove query string issue
  • Fix : Php warning when translation was modified

2.0.3

  • Fix : Using PHPCS to make standard definitions
  • Fix : Change preload cache activation method

2.0.2

  • Add : Change install message to a WP option, and display only once
  • Add : Compatiable with the PRO ADDON CDN cache cleanup

2.0.1

  • Add : Add a warning lightbox when the user activate the minification
  • Add : Add a left menu “More SpeedUp

2.0.0

  • Add : CDN integration: define CND URL and content
  • Add : CDN integration: define CND content exclusion
  • Add : CDN integration: force CDN relative or absolute path
  • Fix : Generate a different cache for http and https (if no redirect is made)

1.5.1

  • Add : Compatiable with the PRO ADDON plugin
  • Add : Move some configuration options to the speed optimization tab
  • Add : Allow exclusion with rules like www.domain.com/blog*
  • Add : Add time parameter for clean each
  • Fix : Fix a non well formed numeric value encountered with php 7.1

1.5.0

  • Add : Remove the Gzip feature by default and check server GZip activation
  • Add : GZip check on the dashboard and display a specific message when it’s not detected
  • Add : File grouping and file minification can now be activate separately

1.4.1

  • Fix : Vulnerability in placeholders
  • Fix : PHP error when htaccess is not writable
  • Fix : Remove query strings on WooCommerce

1.4.0

  • Add : Option remove Query Strings from static resources

1.3.3

  • Fix : Fix error cache when plugin directory changed
  • Fix : Fix show install message after reloading page

1.3.2

  • Fix : Store default settings on plugin activation
  • Fix : PHP error when minify HTML checked

1.3.1

  • Fix : Conflict with other plugins that used mobile detect script
  • Fix : Warning PHP when installed plugin on Addendio

1.3.0

  • Add : Dashboard: Add the PHP version check and File Group activation
  • Add : Option to serve cache for desktop, tablet and mobile: Global, Specific or No cache
  • Add : Detect mobile plugin theme provider and disable cache automatically (WPtouch…)

1.2.0

  • Add : Page builders compatibility : ACF, DIVI Builder, Beaver Builder, Site Origine, Themify builder, Live Composer, Elementor page builder
  • Add : Update the settings with On/Off button instead of checkbox
  • Add : Activate by default the clean cache button in the toolbar
  • Add : Change presentation text for ImageRecycle integration

1.1.7

  • Fix : Enhance PHP 5.2 plugin deactivation

1.1.6

  • Add : Add builtin translation tool

1.1.5

  • Fix : Support for russian language in URL exclusion tool
  • Fix : Check Gzip request

1.1.4

  • Fix : Read data from another server
  • Fix : Disable cache for admin user
  • Add : Replace Curl by wp_remote_get to get data

1.1.3

  • Fix : Add multisite compatibility: minify JS and CSS on multisite

1.1.2

  • Fix : Remove header expiration code in .htaccess when plugin is disabled

1.1.1

  • Add : Option to group js and css (after minification)

1.1.0

  • Add : WooCommerce dedicated integration
  • Add : Image compression ImageRecycle integration
  • Add : Clean cache on plugin settings save
  • Fix : Security, use wp_nonce in admin forms

1.0.3

  • Fix : PHP7 warning Missing argument
  • Fix : Add blank line to wp-config.php when activate and deactivate plugin
  • Fix : Remove everything from wp-config.php on uninstall
  • Fix : Cache activation message on first activation only
  • Fix : Gzip cache not activated on some servers

1.0.2

  • Add : Display clean cache button in frontend toolbar
  • Fix : Cache and purge cache on comments
  • Fix : Analysis cache size

1.0.1

  • Fix : White screen in first install

1.0.0

  • Add : Initial release

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