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Online Services Overview provides Online Services for WordPress optimization, separate from our CDN service. These services are:

  • Image Optimization
  • Critical CSS (CCSS)
  • Unique CSS (UCSS)
  • Viewport Images (VPI)
  • Low-Quality Image Placeholders (LQIP)


CCSS, UCSS, and VPI are collectively referred to as Page Optimization.

You do not have to be a CDN customer to use Online Services.

These services are available individually and each has its own pricing structure, which you can learn more about in Online Services Pricing.

Before using any of these services, you will need to pair WordPress and Once that is done, you will control usage of your Online Services through the LiteSpeed Cache for WordPress plugin.

Do You Need an Account?

A account is not required in order to use Online Services. provides a certain amount of free monthly quota to everyone, even those who use the services anonymously. When your quota runs out, services will simply be suspended until the beginning of the next month, when free quota regenerates.

If you wish to purchase additional quota, monitor your service usage, or subscribe to packages, you will need a account. See Creating a Account for more details.

Last update: February 12, 2024