WordPress Health Inspector plugin will perform a number of checks on your WordPress installation to detect common configuration errors and known issues, and also allows plugins and themes to add their own checks.

The debug section, which allows you to gather information about your WordPress and server configuration that you may easily share with support representatives for themes and plugins.

WordPress Health Inspector allows you to have a clean WordPress session, where all plugins are disabled, and a default theme is used, but only for your user until you disable it or log out.