Accessibility Standards

An interactive guide to the key standards our tools check for. Hover for a quick summary, or click to learn more.

WCAG 1.4.3

WCAG 1.4.1

WCAG 1.2.1

WCAG 1.2.4

WCAG 1.2.5

WCAG 2.0.5

WCAG 1.3.1

WCAG 1.2.2

WCAG 1.4.1

WCAG 1.4.7

ARIA Allowed Attributes

HTML: Document language

HTML: Valid `lang` value

ARIA Label

Skip Navigation Link

Focus Order

Form Field Labels

ARIA Live Region

Alt Text

Link Purpose (In Context)

Table Caption

Heading Levels

WCAG 1.4.4

WCAG 2.1.1

WCAG 2.4.7

ARIA Hidden

WCAG 2.4.2

Language Switcher

Error Identification

Instructions