WebAIM Big Six Self-Assessment

Six failure types account for 96% of all detected accessibility errors on the top 1M home pages (WebAIM Million 2026 — for the seventh year running). Answer six yes/no questions to find out which of the Big Six are likely failing on your site.

Source: WebAIM Million 2026 Report

#1 · Low contrast text · WCAG 1.4.3 Contrast (Minimum) (Level AA)

Does every text element on your site meet at least 4.5:1 contrast against its background (3:1 for large 18pt+ regular / 14pt+ bold)?

Industry baseline: 83.9% of home pages fail this.

#2 · Missing alternative text · WCAG 1.1.1 Non-text Content (Level A)

Does every meaningful image on your site have descriptive alt text (and every decorative image use alt="")?

Industry baseline: 53.1% of home pages fail this.

#3 · Missing form input labels · WCAG 1.3.1 Info and Relationships, 3.3.2 Labels or Instructions, 4.1.2 Name, Role, Value (Level A)

Does every form input have a programmatically-associated <label> (placeholder is NOT a label)?

Industry baseline: 51% of home pages fail this.

#4 · Empty links · WCAG 2.4.4 Link Purpose (In Context) (Level A)

Does every link have accessible text — including icon-only links (which need aria-label)?

Industry baseline: 46.3% of home pages fail this.

#5 · Empty buttons · WCAG 4.1.2 Name, Role, Value (Level A)

Does every button have an accessible name — visible text or aria-label?

Industry baseline: 30.6% of home pages fail this.

#6 · Missing document language · WCAG 3.1.1 Language of Page (Level A)

Does your page have a valid lang attribute on the <html> element?

Industry baseline: 13.5% of home pages fail this.

0/6 answered