axe DevTools

axe DevTools is an accessibility testing toolkit from Deque Systems built for developers and QA engineers who want to catch WCAG violations while they write and test code rather than in a separate audit weeks later. It builds on axe-core, the open-source accessibility rules engine that powers accessibility checks in many browsers and testing frameworks, and wraps it in a browser extension, IDE integrations, and CI/CD tooling so the same rule set runs at every stage of development. The browser extension lets a developer scan any page and get a list of issues with the exact DOM node, the rule that failed, and guided instructions for fixing it, while its Intelligent Guided Tests walk through harder-to-automate checks like keyboard focus order, modal dialogs, and contrast on images. Its automated scans are tuned to report effectively zero false positives, which matters because noisy accessibility tools train teams to ignore their output. For engineering organizations, axe DevTools integrates with Jenkins, GitHub Actions, and other pipelines to fail builds that introduce regressions, and a component-level view maps a single violation back to every page where a shared component appears. It is widely used by product teams that treat accessibility as an ongoing engineering requirement instead of a one-time compliance project.