Heading Tag
SEOAlso: H Tag · HTML Heading · H1 · H2
Quick definition
Heading tags are HTML elements (H1 through H6) that define the hierarchical structure of content on a web page. The H1 is the main page heading, appearing once. H2 tags are major section headings. H3 through H6 are subheadings within those sections. They help both users and search engines understand how content is organised, and they carry SEO weight proportional to their level in the hierarchy.
How it varies across Australia
Many Australian business websites use heading tags inconsistently, with H1 tags used for decorative styling rather than the primary keyword, and H2 and H3 tags applied at random rather than to reflect content structure.
Explore benchmarks →The most important heading on the page. Use exactly one H1 per page. It should describe what the page is about and include the primary keyword. Often closely related to or the same as the title tag.
Major sections within the page. H2 headings should break the content into logical chunks and can include secondary keywords. A typical service page might have three to five H2 headings.
Content within H2 sections. Use H3 for breakdowns, examples or supporting points within a major section. H3 onwards carries less SEO weight but significantly improves readability.
Headings should nest logically: H1 at the top, H2 beneath it, H3 within H2 sections. Skipping levels (going from H1 directly to H4) creates structural confusion for screen readers and search engine crawlers.
What it actually means
HTML heading tags define the outline of your content. Think of them like a document with chapters, sections and sub-sections. The H1 is the chapter title. H2 tags are the section headings within that chapter. H3 tags are sub-points within each section. Search engines use this hierarchy to understand the relationship between ideas on the page. Users use it to scan and navigate, deciding whether to read further. From an SEO perspective, keywords in heading tags carry more weight than keywords in body text, with H1 carrying the most weight and the significance decreasing as the level number increases.
Heading tags are the table of contents for your page. If a user and Google cannot scan your headings and understand what the page covers, the content underneath them will not do the job.
The Australian context
For Australian local businesses, the H1 is often the right place to signal both the service and the location. 'Plumber Ballarat', 'Commercial Lawyer Brisbane', 'Wedding Florist Byron Bay' as an H1 directly addresses what the majority of local search queries look like. This is more effective than a heading like 'Serving the Ballarat Community Since 1998', which wastes the H1's SEO value on sentiment rather than search relevance.
Where people get this wrong
Using multiple H1 tags on a single page is the most common mistake. This was more acceptable under older HTML specifications, but modern SEO practice calls for a single H1. The second mistake is using heading tags for visual styling rather than content structure. If you want a piece of text to look like a heading, apply a CSS class, not an H tag, unless it is genuinely a structural heading.
Related terms
Common questions
How many H2 headings should a page have?
As many as the content structure requires, but typically three to six on a standard service or product page. Each H2 should represent a genuinely distinct section of the page. If you find yourself writing seven or more H2 sections, the page may be covering too many topics and should be split.
Should my H1 be exactly the same as my title tag?
They do not need to be identical, but they should be closely related. The title tag is constrained to about 60 characters for search results. The H1 can be slightly longer and more descriptive for the human reader. Many SEOs use the same text for both, which is perfectly fine.
Do heading tags affect mobile SEO?
Yes. Clear heading structure improves mobile readability because users on small screens rely heavily on scanning headings to decide whether to read further. Google's mobile-first indexing means the content structure on your mobile page is what gets evaluated, so headings that render properly on mobile matter for both UX and SEO.
Can I use keywords in H2 and H3 headings?
Yes, and you should where it reads naturally. Secondary and related keywords that fit logically into section headings get meaningful SEO credit. The rule is the same as for all on-page content: include keywords where they serve the reader, not where they are forced.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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