WCAG (Web Content Accessibility Guidelines)
WCAG is the international standard for web accessibility, published by the W3C, organized into 50+ testable success criteria across four principles: perceivable, operable, understandable, and robust.
Detailed explanation
The Web Content Accessibility Guidelines (WCAG) are the technical reference standard for digital accessibility. They define what it means for content to be accessible to people with disabilities — vision, hearing, motor, cognitive — across desktop and mobile.
WCAG has three conformance levels: A (minimum), AA (the most common policy and procurement target), and AAA (highest). Laws differ: some incorporate a particular WCAG version, some use WCAG as a technical benchmark, and others state functional requirements without naming WCAG.
WCAG 2.1 (June 2018) added 17 success criteria covering mobile and cognitive needs. WCAG 2.2 (October 2023) added 9 more — focus visibility, target size, dragging movement alternatives, accessible authentication. WCAG 3.0 is in working draft and is not yet a legal target.
How this applies to Shopify stores
For Shopify stores, WCAG 2.1 Level AA plus applicable WCAG 2.2 Level AA criteria is a practical accessibility target. AccessComply runs automated, WCAG-mapped checks across selected storefront pages and reports detected issues. Automated tools cannot evaluate every success criterion; the W3C's WCAG Quick Reference remains the canonical source.
What merchants should check next
Treat this term as a practical audit prompt, not just a definition. Check the storefront pages where the concept shows up in real customer journeys: product discovery, add-to-cart, cart drawer, checkout handoff, account login, and support contact flows. If the issue affects code, verify the rendered HTML and computed browser output after the theme change. If it affects copy or media, keep the merchant-facing wording accurate and easy to maintain.
Primary source: w3.org