What The File adds an option to your toolbar showing what file and template parts are used to display the page you’re currently viewing.
The plugin will give me the main file that controls a page - but I wish it would give me the files that contribute page parts, too - for example, an Add To Cart button from WooCommerce.
There must be 20 files that could plausibly contribute to that button, but all What The File will tell me is that most of the page is coming from mytheme/template.php - well, I knew that.
Now, if only it could tell me what WooCommerce file breaks my responsive header on product pages - right now, I'm just not showing product pages, and adding cta buttons on product listings that occur elsewhere.
I love the way this plugin calls the top-tiered template files. This is very handy. Although I wish it went a littlefurther by showing all the files that are being called.
For instance, on WooCommerce My Account page, it says "page.php" and "content-page.php" are being called. It doesn't list that "my-account.php" or "my-subscriptions.php" are being called and possibly others.