Performance Lab

Monorepo for the WordPress Performance Team, primarily for the Performance Lab plugin, which is a collection of standalone performance features.

Details about the Performance Lab plugin, including instructions for getting started and contributing, are available in the Performance Team Handbook here.

For WordPress and PHP version requirements, please see the CONTRIBUTING.md file here.

The feature plugins which are currently featured by this plugin are:

Plugin	Slug	Experimental	Links
Image Placeholders	dominant-color-images	No	Source, Issues, PRs
Modern Image Formats	webp-uploads	No	Source, Issues, PRs
Performant Translations	performant-translations	No	Source, Issues, PRs
Speculative Loading	speculation-rules	No	Source, Issues, PRs
Embed Optimizer	embed-optimizer	Yes	Source, Issues, PRs
Enhanced Responsive Images	auto-sizes	Yes	Source, Issues, PRs
Image Prioritizer	image-prioritizer	Yes	Source, Issues, PRs
Web Worker Offloading	web-worker-offloading	Yes	Source, Issues, PRs

Note that the plugin names sometimes diverge from the plugin slugs due to scope changes. For example, a plugin's purpose may change as some of its features are merged into WordPress core.