Nagaoka Design

This plugin helps WordPress developers by showing which template files are being used on the current page. It displays the current template file name and directory path in a convenient overlay, making it easy to identify which template is rendering the current page during development.
The plugin shows a small, unobtrusive display that can be clicked to reveal detailed information about all template files loaded for the current page.
Key Features: 
* Shows current template file name 
* Displays template directory path 
* Click to view all included template files 
* Configurable display position (top-left, top-right, bottom-left, bottom-right) 
* Customizable background and text colors 
* Admin-only display option for security 
* Debug mode option (only shows when WP_DEBUG is enabled) 
* Lightweight and performance-optimized 
* Clean, modern interface
Perfect for: 
* Theme developers 
* WordPress developers 
* Site debugging 
* Template hierarchy understanding 
* Development and staging environments
The plugin is designed to be completely safe and non-intrusive, with options to restrict visibility to administrators only.

Current Page Template Viewer

Display current template file and directory name on screen for WordPress development.

Automattic

Daniel Bachhuber

Alex Mills

Mohammad Jangda

Josh Betz

Nikolay Bachiyski

Thorsten Ott

nickdaugherty

Prasath Nadarajah

A plugin, which helps WordPress developers develop.
This plugin will help you optimize your development environment by making sure that you have all the essential tools and plugins installed.
If you’d like to check out the code and contribute, <a href="https://github.com/Automattic/developer" rel="nofollow ugc">join us on GitHub</a>. Pull requests, issues, and plugin recommendations are more than welcome!
We would like to thank Ejner Galaz for letting us use the <code>developer</code> slug in the WordPress.org plugin repository.

Developer

A plugin, which helps WordPress developers develop.

Current Page Template Viewer vs Developer