ADA Compliance for BigCommerce Stores

BigCommerce is a SaaS e-commerce platform serving mid-market and enterprise retailers with features like headless commerce, multi-storefront, and B2B capabilities. Like all e-commerce platforms, BigCommerce stores are considered places of public accommodation under the ADA, making accessibility compliance a legal requirement for U.S.-facing stores.

The legal pressure is intense: over 10,000 ADA-related digital lawsuits were filed in the U.S. in 2023, with e-commerce being the most targeted sector. The average settlement ranges from $5,000 to $25,000 for small businesses, but class actions targeting larger BigCommerce merchants can reach six figures. The April 24, 2026 ADA Title II deadline and the European Accessibility Act add urgency for merchants selling internationally.

BigCommerce's Stencil theme framework provides a solid foundation, but real-world stores frequently contain accessibility barriers:

• Product image galleries — lightbox and zoom features that cannot be operated by keyboard, with missing alt text on variant images
• Faceted search and filtering — dynamic filters that update without announcing changes to screen readers, violating ARIA live region requirements
• Checkout flow barriers — multi-step checkout with form validation errors that are not programmatically associated with input fields
• Third-party app widgets — review systems, chat widgets, and upsell popups from BigCommerce's app marketplace that inject inaccessible markup
• Custom theme modifications — developers overriding Stencil's default accessible patterns with custom JavaScript that breaks keyboard navigation

BigCommerce's headless commerce option introduces additional complexity: decoupling the frontend means you are responsible for all accessibility in your custom storefront, with no theme framework defaults to fall back on.

BigCommerce has invested in accessibility improvements, particularly in its Cornerstone theme (the default Stencil theme):

• Semantic HTML output — Cornerstone uses proper heading hierarchy, landmark regions, and form label associations
• Keyboard navigation — the default theme supports keyboard operability for navigation, product browsing, and cart management
• Alt text fields — product images support alt text through the BigCommerce admin, though it is not enforced
• Optimized checkout — BigCommerce's hosted checkout has been improved for screen reader compatibility

Limitations include no built-in accessibility auditing tool, limited ARIA customization through the admin interface, and an app marketplace that does not enforce accessibility standards on third-party integrations. Custom Stencil theme development requires Handlebars templating expertise, which not all BigCommerce agencies possess with accessibility knowledge.

Scan your BigCommerce store with CompliScan to identify WCAG 2.1 AA violations across product pages, collections, checkout, and account pages. Automated tools catch approximately 30-40% of accessibility issues, so supplement with manual keyboard and screen reader testing.

BigCommerce-specific remediation steps:

• Start with Cornerstone — if using a custom theme, compare its accessibility against Cornerstone's baseline; adopt Cornerstone's patterns for navigation and forms
• Add product image alt text — systematically review your entire catalog; use descriptive text that helps screen reader users understand the product ("Navy blue wool blazer, front view" not "blazer-1.jpg")
• Audit marketplace apps — test each installed app with keyboard-only navigation; remove or replace apps that trap focus or inject unlabeled elements
• Test the full purchase flow — navigate from homepage to checkout using only keyboard; ensure error messages are associated with form fields via aria-describedby
• Monitor continuously — CompliScan's Shield plan at $49/month provides weekly scans that catch regressions after theme updates and app installations