The Performance Lab
This plugin is a collection of modules focused on improving the performance of your site, most of which should be integrated into WordPress core. The plugin allows you to individually activate and test the modules to get their benefits before they are available in WordPress core and provide feedback to further improve the solutions.
This is the description of the new plugin created by the Perfomance Lab Group wordPress and available in the repository since a week ago.
The good news is that they are starting to take more seriously the performance and thanks to this plugin we can now get to know and test the optimisation proposals that will most probably end up being part of the WordPress core.
It can be installed and tested, although, as warned, it is a beta testing plugin. Modules that are not marked as“experimental” should work on a production site, but it is recommended to test it in a test environment.
Activating all the modules, including the experimental one, I haven’t found a way to check if the CSS and JS resource checking works or if it just hasn’t detected any errors. In any case, two new checks appear in Tools/Site Health.