Free SEO, AI and GEO toolH1 tag checker
Enter a page's address: the checker finds its H1, checks that it's unique, of a sensible length and consistent with the title, then shows the full heading tree, from H1 to H6. It flags skipped levels, empty headings and subheadings written as questions, which are easy for an AI to reuse.
How to use the checker
- Paste a page's address, and the target keyword if you wish.
- Check the H1 first: present, unique, clear.
- Go through the heading tree: it should read like the page's table of contents.
What are H1, H2 and H3?
They're the heading levels of a web page, from H1 to H6. The H1 announces the page's topic; H2s divide that topic into sections; H3s divide each section. Well chosen, they form a table of contents that readers, Google and AI platforms can scan in a few seconds.
What is the H1 tag for?
It gives the page's main heading, the one visitors read first. Google uses it too: when it considers the title incomplete or misleading, it may show the H1 in its place in its results. Hence the value of an H1 and a title that say the same thing, in different words if you like.
Headings that help AI
An AI looking for an answer finds a passage more easily when a clear subheading introduces it. Word your H2s like your customers' questions, for example “How much does a bespoke kitchen cost?”, and answer in the very first sentence that follows.
Frequently asked questions: heading tags, SEO, AI and GEO
What does H1 mean?
H1 stands for “heading 1”, a first-level heading. It's the HTML tag for a page's main heading; H2 to H6 mark the following levels.
What is an H1 tag?
It's the main visible heading of a page, placed in an h1 tag in the code. It tells visitors, Google and AI platforms what the page is about.
Can a page have more than one H1?
HTML allows it and Google doesn't penalise it. A single H1 is still clearer: it says in one line what the page is about.
Should the H1 be the same as the title?
No, but consistent with it. The title is written for the results page, the H1 for the visitor who has already arrived on the page. If they differ too much, Google may prefer the H1 as the title it displays.
How many subheadings should a page have?
Google says so: there's no ideal number. One subheading per important idea is enough; if you feel you have too many, you probably do.
