Text Domain Inspector is a free WordPress plugin designed for website administrators who need to identify the text domains of translatable strings efficiently. This tool addresses the common frustration of locating text domains, which can be time-consuming even for those with coding skills. By simply pressing the 'Inspect Text Domains' button in the admin menu, users can easily see red dots next to translatable strings that reveal the associated text domains upon hovering.

The plugin supports a variety of content formats, including HTML documents, HTML fragments, HTML attributes, plain text, dynamically loaded content via AJAX, and JSON. This versatility ensures that users can inspect text domains in different contexts seamlessly. The straightforward interface and functionality make it an essential tool for anyone involved in WordPress translation and localization.