The role of H1 to H6 tags in content hierarchy

When I first started writing HTML, I made the same mistake almost every junior developer makes: I used heading tags ( <h1> through <h6> ) just to change the size and boldness of my text. Need really big text? Throw an <h1> on it. Need it slightly smaller? Make it an <h3> . It looked fine on the screen, but under the hood, I was actively destroying my website's Technical SEO and accessibility. Here is the truth: Heading tags are not styling tools. They are the skeleton of your web page. How Googlebot Reads Your Headings When a search engine crawler visits your page, it does not care about your CSS. It looks at your HTML DOM to understand the context of your content. The <h1> to <h6> tags create an outline, much like the table of contents in a book. If your "table of contents" jumps from Chapter 1 ( <h1>) straight to a sub-bullet point ( <h4> ), the crawler gets confused. Confused crawlers do not rank pages well. The Golden Rules of Hierarchy Only ONE <h1> per page: Your <h1> is the titl