Suggest an editImprove this articleRefine the answer for “Why is it important to use <h1>-<h6> headings in order?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)Headings **`<h1>`-`<h6>`** form the hierarchy of a document's structure, and their correct order is needed not for looks, but so that browsers, search engines, and assistive technologies understand the logic of the page. **Key point:** using headings in order means building a logical and understandable structure.Shown above the full answer for quick recall.Answer (EN)ImageHeadings `<h1>`-`<h6>` form the **hierarchy of a document's structure**, and their correct order is needed not for looks, but so that **browsers, search engines, and assistive technologies** understand the logic of the page. --- ### 1. They form the meaningful structure of the page Headings are the "skeleton" of the content. The browser and search engines use them to build the **document's outline**. Example (correct): ```html <h1>News</h1> <h2>Technology</h2> <h3>Artificial intelligence</h3> <h2>Science</h2> ``` Here you can see: - `<h1>` is the main heading, - `<h2>` is a section, - `<h3>` is a subsection. If the order is mixed up (`<h1>` → `<h4>` → `<h2>`), the logic breaks: search engines and reading software cannot tell what belongs to what. --- ### 2. They affect SEO Search engines analyze headings to determine the **topic and priority of content**: - `<h1>` is the main meaning of the entire page (usually one). - `<h2>`-`<h3>` are the key subtopics. If the headings go in order, the search engine indexes the content better and **understands what matters and what is secondary**. --- ### 3. They improve accessibility Screen readers and software for users with low vision read a site by its heading structure. If the order is broken, the user will find it **impossible to navigate**: instead of logical navigation, they will hear chaos like "Level 5 heading... then 2... then 4...". --- ### 4. They make comprehension and maintenance easier For a developer and a reader, sequential headings are a **logical map of the document**. They make it easy to understand where a new topic starts and where the previous one ends. --- ### Summary: | Level | Purpose | |---|---| | `<h1>` | The main heading of the page (one) | | `<h2>` | Main sections | | `<h3>` | Subsections within sections | | `<h4>`-`<h6>` | Detail, sub-points | --- **Conclusion:** Using headings in order means **building a logical and clear structure**. It helps search engines, users, and developers alike: the page becomes **accessible, SEO-friendly, and easy to read**.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.