HTML Heading Highlighter is a free Chrome extension developed by Evans Owino. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This extension aims to make it easier for users to visualize the heading hierarchy on a webpage.

The main purpose of HTML Heading Highlighter is to highlight all the headings (h1-h6) present on a page. By doing so, it allows users to quickly understand the structure and hierarchy of the headings. This can be particularly useful for accessibility audits or when analyzing the organization of a webpage's content.

With this extension, each heading is given a distinct outline with a specific color. Additionally, a key is appended to the body of the page, providing a clear mapping of each color to its corresponding heading level. This visual representation makes it effortless to identify the different levels of headings and their relationships.

HTML Heading Highlighter is a valuable tool for web developers, designers, and anyone involved in content creation. It simplifies the process of assessing the heading structure of a webpage, ensuring proper organization and accessibility.