About this plugin
Demo
json ).
dev. 4WP is our project brand; the letters “WP” appear only as part of that brand name, not as a reference to WordPress. This plugin is not affiliated with, endorsed, or sponsored by WordPress.
com/4wpdev/4wp-style-switcher
Development
Human-readable PHP source is in the public GitHub repository above. php when vendor/ is absent). No npm build step — front-end scripts ship as plain JS in assets/.
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The demo site Style Switcher uses Twenty Twenty-Five: About, Morning, Afternoon, and Evening pages with per-page styles, A/B light vs dark, a bottom-right visitor switcher, and Light/Dark in the header and footer menus.
Page style (editor) — pick a variation for a page; optionally lock it so visitors cannot override it.
Frontend switcher — visitors choose from allowed variations; the choice is stored in localStorage and synced to a cookie for server-side rendering.
Light / Dark (navigation block) — add the Light/Dark block inside Navigation; map two variations (sun/moon icons).
A/B testing — split new visitors between two variations; daily aggregate stats monitor the traffic split.
Privacy
When the visitor switcher or A/B testing is enabled, the plugin may store the selected style variation in a browser cookie ( forwp_ss_style ) and in localStorage on the visitor device. No personal data is sent to third-party services. A/B stats are aggregated counts stored in your WordPress database.
Blocks
This plugin provides 1 block.
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Light / Dark — menu toggle between two mapped theme style variations (sun/moon icons). Hooks (developers)
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forwp_style_switcher_variations — filter theme variation list.
- forwp_style_switcher_ab_assigned — after A/B cohort assignment.
- forwp_style_switcher_analytics_track — analytics events.
- forwp_style_switcher_ab_assignment_enabled — filter A/B assignment.