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SEO High impact Easy 10–20 min per page

Headings H1–H6 (structure)

Exactly one H1 and a logical hierarchy of subheadings.

What it is

Headings H1 through H6 form the outline of the content. H1 is the main page heading, H2 the main sections, H3 subsections, and so on. They form a tree, not random font sizes.

Why it matters

Headings help search engines and screen readers understand the structure and topic of the page. An H1 with a keyword strengthens relevance. A missing H1, multiple H1s, or skipping levels (H2 → H4) breaks the structure and reduces clarity.

How to do it

  1. 1Every page has exactly one H1 that captures its topic and contains the main keyword.
  2. 2Don't skip levels — H2 is followed by H3, not directly by H4.
  3. 3Use headings for structure, not to visually enlarge text (CSS is for that).
  4. 4Write subheadings descriptively so the outline makes sense even without the text between them.

Correct hierarchy

Wrong
H1: Welcome
H1: Kids' jackets   ← second H1
  H4: Sizes        ← skipped H2/H3
Correct
H1: Kids' winter jackets
  H2: How to choose the size
    H3: Measuring by age
    H3: Size chart
  H2: Materials and care

Conclusion

Headings are an outline, not decoration. Rule: one H1 with the keyword, then descending without skipping levels. A good heading structure improves SEO, accessibility, and readability at the same time — it's a quick win.

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