Plugin Directory

Test out the new Plugin Directory and let us know what you think.
!This plugin hasn’t been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

WP Parallel Loading System

The WP-PLS (short for Parallel Loading System) is a WordPress plugin that will enhance the loading efficiency of your Blog.

  • Fixed a bug where the version of the plugin was not updated at the plugin page


  • Added support for timthumb.php and other thumbnail generators (Thank you all that sent feedback)


  • Changed the way the plugin detects what OS you're on. (Thank you Christian)
  • Changed the way the plugin detects folder separators. (Thank you Christian)
  • Added support for when your blog is itself installed on a subdomain
  • Added information on adding index.php to your subdomains

  • You can now change the root path at any time.
  • Bug fixes.


  • Few changes to better adapt to version 3.0 of WordPress

  • Bug fixes. (Thank you Joe for the help)

  • Bug fixes. (Thank you Jan Waldeck for the help)
  • Added awareness to Cache plugins.


  • New pre-defined file system has been added.
  • Greatly improved compatibility with Plesk systems and systems that have open_basedir restrictions active.
  • System should be more aware of your configuration and more adaptable.


  • Better compatibility with a wider range of systems.
  • BUG FIX - Plugin will now only change links that are inside a tag.
  • More flexibility when adding a sub-domain. It should not be so rigorous.
  • Added a compatibility check for sub-domains health. Your system might not able to support the technology required to do these checks.


  • Improved plugin flexibility.
  • Added Options section on Plugin Administration.
  • OPTIONS - You can now specify if you want to use Simple Method or Normal Method (Simple Method will not require most of the paths and configurations, however it will not be as effective and fast).
  • OPTIONS - You can now also apply PLS to external images! This will be activated by default when you activate your plugin.
  • When deactivated the plugin will revert and changes made to WordPress own .htaccess.


  • Improved plugin code and performance.
  • If the plugin detects WordPress own .htaccess it will not replace, instead there will be an append to the file. (A backup is always created)
  • Backups are only created if the files have different sizes.
  • Alert messages have been enhanced for better readability.
  • Added checks for mod_rewrite and mod_headers. Plugin will not activate if these are not found. (Thank you Jochen)
  • Added documentation to plugin page explaining how the plugin health works. (Thank you Jochen)
  • Sub-domain will be automatically disabled if it's not healthy.
  • Added preliminary support for NGINX and Windows Server. This is still work in progress. (Thank you Mastershake)
  • Corrected "/" for Windows Server, "\" should now be used. (Thank you Ron)
  • Added better information on adding a new Sub-Domain where http:// or https:// should be used. (Thank you Jochen)
  • Added more cache control on images. This should improve even more the performance.
  • Added third-party plugins compatibility. If you're using a plug that has known compatibility issue the plugin will report this on Compatibility list.
  • Changed load_image.php code.
  • Changed .htaccess code.
  • Improved documentation on Plugin WordPress Repository. (FAQ)


  • Improved plugin integrity
  • Added backup functionality so that when the plugin tries to update system files on subdomains it will create a backup of the old file and place it on the same folder


  • Corrected some bugs
  • Added functionality to provide root path manually


  • Initial release
  • Automatic Image Optimization.
  • Parallelize HTTP connections.
  • Page speed improvement.
  • Auto-Path find (Automatically find server root path, sub-domain path, plugin resources path…).
  • Cache loss minimization.
  • Sub-domain real-time health tracking.
  • Auto recovery from resource files bad sync.
  • Ability to activate / deactivate sub-domains
  • Plugin Updates aware. (automatically re-sync files and database after an update)

Requires: 2.9.0 or higher
Compatible up to: 3.0.5
Last Updated: 6 years ago
Active Installs: 400+


2.7 out of 5 stars


Got something to say? Need help?


Not enough data

0 people say it works.
0 people say it's broken.

100,1,1 100,1,1 100,2,2 100,1,1 100,1,1 67,3,2 100,2,2 100,2,2 100,1,1 75,4,3 100,1,1 100,1,1
100,1,1 100,1,1 100,1,1
100,1,1 100,1,1 50,2,1