An HTML tag utilized to designate the primary heading or top-level information on a webpage is the H1 tag. Page titles and headlines are typically marked with H1 tags, making them the most prominent text elements on a page. H1 tags can be styled using CSS to ensure font, color, and size consistency across the website.

These tags hold significance in search engine optimization (SEO) as they aid in content indexing. Content enclosed within an H1 tag signals its importance to search engines, facilitating better understanding and categorizing the webpage’s content.


An example of an H1 tag is the main headline of a webpage, often styled to be the largest and most prominent text on the page. These tags are crucial for search engine optimization (SEO) as they signal the primary topic or theme of the content to search engines.