More than one H1 leaves the page's subject ambiguous. Usually it means a template heading and a content heading were both promoted.
The finding reads:
info many-h1 … H1 headings on the page, one is neededKeep one H1 and demote the rest to H2.
Collapsed when it fires template-wide. If it appears on 90% or more of the pages — or of one language version — of a site with at least 20 pages, it is a property of the template and is reported once, with the count, instead of once per page.
Suppressed on JavaScript shells. A page with no text in its source HTML would trip this check for a reason that is already reported as js-shell, and repeating it four times is not four times as informative.
pipx install indexgap
cd your-project
indexgap init
indexgap checkThen indexgap brief turns
every finding on this page into a work order in indexgap-briefs/,
with the thresholds the result has to satisfy and the command to check it.