CompressX Documentation

Everything you need to install, configure, and get the best performance from CompressX Free and Pro.

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WordPress MU Support

Jan 15, 2026 | Docs

CompressX Pro is fully compatible with WordPress Multisite environments. It enables centralized image optimization management across your entire network, ensuring all sub-sites benefit from high-performance WebP and AVIF delivery using one unified configuration.

How CompressX Pro Works in Multisite

CompressX Pro operates at the network level in WordPress Multisite installations.
Once activated by a Network Administrator, all optimization rules and settings are managed centrally.

After network activation, CompressX Pro provides a unified dashboard that controls compression quality, Next-Gen image formats, and CDN delivery for every sub-site simultaneously.

Core behavior includes:

  • Centralized optimization management from Network Admin
  • Global WebP and AVIF configuration
  • Unified CDN integration
  • Network-wide performance optimization
  • Site-level Media Library isolation
Note
CompressX Pro does not merge Media Libraries between sites. Each sub-site retains its own media data while inheriting global optimization rules.

Network Admin vs Site Admin Permissions

In Multisite environments, CompressX Pro permissions are managed exclusively at the Network Admin level.

Permission behavior:

  • Network Admin (Full Access)
    Can manage licenses, optimization settings, CDN integration, tools, statistics, and system configuration.
  • Site Admin (No Access)
    Cannot view or modify CompressX Pro configuration panels or Pro features.
Tip
This permission model prevents configuration conflicts and guarantees consistent optimization standards across the network.

Media Storage Behavior in Multisite

CompressX Pro follows native WordPress Multisite media storage architecture and does not modify default file structures.

Storage behavior includes:

  • Each sub-site stores media files in its own uploads directory.
  • Optimized image versions (WebP, AVIF, thumbnails) remain linked to the originating sub-site.
  • No automatic sharing of optimized images between sub-sites.
  • All optimization operations respect site-level boundaries.
Note
Deleting a sub-site will also remove its associated optimized image files according to standard WordPress Multisite behavior.

Common Multisite Use Cases

CompressX Pro supports a wide range of Multisite deployment scenarios.

Common use cases include:

  • Agencies managing multiple client websites from a single WordPress installation.
  • SaaS-style platforms offering site creation for users.
  • Content networks operating multiple branded sub-sites.
  • Staging and testing environments with shared optimization rules.

Centralized optimization simplifies management while maintaining consistent image performance across large networks.

Summary

CompressX Pro Multisite Support provides a scalable, centralized solution for managing image optimization across your network.

Key benefits include:

  • Unified WebP and AVIF delivery
  • Centralized optimization control
  • Consistent performance standards across sub-sites
  • Reduced storage usage
  • Simplified Multisite administration

With a single configuration, every sub-site benefits from faster image delivery, modern image formats, and optimized performance.