
How to Use Multiple Themes in WordPress Safely
Learn when multiple WordPress themes make sense, how request-based theme routing works, and how to avoid template, navigation, SEO, and cache failures.
ThemeRouter journal
Migration strategy, routing decisions, release safeguards, and product updates for teams modernizing complex WordPress sites.

Learn when multiple WordPress themes make sense, how request-based theme routing works, and how to avoid template, navigation, SEO, and cache failures.

ThemeRouter 1.0.0 introduced private preview and route-based theme assignments for controlled, gradual WordPress theme migration.
Use the product documentation for installation, route configuration, and preview workflows.
Learn the four-step model for assigning, previewing, measuring, and expanding routes.
Send the route, themes, environment details, and exact result to ThemeRouter support.