A tool that allows users to view the source code of a webpage is often referred to as a "view source" or "view page source" tool. The source code of a webpage is the underlying HTML (Hypertext Markup Language) code that defines the structure, content, and layout of a webpage.
Viewing the source code of a webpage can be useful for a variety of purposes, such as debugging a webpage, learning about the underlying structure and content of a webpage, and understanding how a webpage is built and styled. It can also be useful for SEO (Search Engine Optimization) purposes, as the source code of a webpage can provide insight into the on-page elements and strategies that are being used to optimize the webpage for search engines.
View source tools are commonly available as browser extensions or plugins that can be added to a web browser, as well as online tools that can be accessed through a web browser. To view the source code of a webpage, users simply need to navigate to the webpage in their web browser and use the view source tool to access and view the underlying HTML code.