You can do almost everything with WPCodeBox. The most common use cases are: adding tracking scripts (Google Tag Manager, Facebook pixel), customizing plugins like WooCommerce, or adding extra functionality without needing a lot of plugins.
WPCodeBox has two main ways in which it can run a WordPress code snippet: automatic and manual. When you run a code snippet automatically, the snippet will run on page load, according to conditions set by the "Where to run" option.
The second one allows you to run a code snippet on demand. These snippets won't run until you click the run button above the editor. You can also see the output of these snippets below the editor window, but option is only available for PHP Code Snippets.
That saves you time when working with WordPress. All your Code Snippet needs in one easy-to-use plugin.