How many websites pass the H1 check?

Based on 499 audited sites · Updated 2026-05-08

57.9%of audited sites pass this check↑0.6% vs last month

95% confidence interval: 53.5%–62.2%

About This Check

Having exactly one H1 heading provides a clear content hierarchy signal for crawlers and LLMs.

Why This Matters

LLM Discoverability

A single, descriptive H1 heading is one of the strongest in-page signals LLMs use to label the topic of a page; multiple or missing H1s create ambiguity that degrades the accuracy of AI-generated summaries.

SEO Impact

The H1 heading is the highest-weight on-page content signal after the title tag; it informs Google's understanding of the page topic and should align closely with the target keyword.

Status Breakdown

57.9%pass(289)

42.1%warn(210)

0%fail(0)

Compliance Trend

Daily pass rate across benchmark snapshots (up to 90 days).

Industry Breakdown

How different industries perform on this check.

Other57.1% passavg score 67.4n=7

Energy33.3% passavg score 73.7n=3

Gaming33.3% passavg score 79.3n=3

Retail100% passavg score 77.2n=5

Travel66.7% passavg score 72n=6

Finance61.5% passavg score 75.7n=26