Accessibility Testing Tools for Ecommerce: What Each One Catches
Automated accessibility testing tools such as axe, WAVE and Lighthouse scan a page against WCAG rules and flag what software can detect, but none replaces human review. For an online store, combine a free scanner on key pages with keyboard and screen reader testing of the checkout flow.
Accessibility testing tools are easy to find and easy to over-trust. This guide covers the three most used free tools, what each is built to do, and the parts of a store that still need a person.
What do accessibility testing tools actually check?
Automated tools run rule-based checks against the page: missing alternative text, low color contrast, unlabeled form fields, heading order. Lighthouse shows how this works. Its accessibility score is a weighted average of pass or fail audits, with no partial credit, and the weights reflect axe user-impact assessments (Chrome developer documentation, checked November 3, 2026). The same documentation lists manual checks such as focus traps, logical tab order and landmark use, which are not scored.
Which free accessibility testing tools should a store know?
Treat every percentage a vendor quotes as a ceiling for what software can detect, not a measure of how accessible your store is.
What do scanners miss on an ecommerce site?
Scanners cannot judge whether the checkout makes sense to someone using a keyboard or a screen reader. They will not tell you if focus gets trapped in a modal, if the tab order skips the payment form, or if an error message is announced. Test these by hand on the cart, shipping, payment and confirmation steps.
Our guides on running an ecommerce accessibility audit, finding accessibility issues on a Shopify store and which accessibility issues to address first cover the manual side.
How does Noibu's ADA agent fit?
Noibu's ADA agent audits your highest-traffic pages against WCAG, produces a report, and prepares changes for your review. After you push them live, it re-audits the pages to confirm the issue is resolved. Because it starts from traffic, it points at the pages shoppers actually use. Noibu's free website audit is the free place to start.
Frequently asked questions
What is the best free accessibility testing tool?
Can an automated tool find every accessibility issue?
What does Lighthouse check for accessibility?
What should I test by hand on a store?
Where should an online store start with accessibility testing?
Use scanners to catch the rule-based problems quickly, and use people to test the checkout. Noibu's ADA agent audits your highest-traffic pages against WCAG and re-audits after your changes go live, with your approval at every step.
Noibu is AI for ecommerce operations, the always-on optimization system that keeps online stores running at their best. A team of supervised AI agents finds what's broken, slow, or leaking revenue, does the work, and hands results back for human approval. Trusted by retailers like Free People, Guess, Liquid I.V., and Ariat.
