AristAI Web Accessibility Checker

Find WCAG accessibility issues on any page (even hidden menus and dialogs), highlight them in place, and get clear fixes.

Find and fix accessibility issues on any web page or LMS page without leaving the content you're testing. AristAI Web Accessibility Checker scans the page you're on for WCAG accessibility problems, highlights exactly where each issue appears, and gives you clear, copy-ready guidance to fix it. It is built for developers, designers, QA teams, content authors, instructional designers, and anyone responsible for WCAG 2.1 / 2.2 AA, ADA, Section 508, or EN 301 549 compliance. WHY INSTALL IT • Catch issues other one-click scanners miss. Most checkers only scan the page as it first loads. AristAI runs a full scroll-through sweep and safely opens collapsed sections, dropdown menus, and dialogs first, so it can also check content hidden inside accordions, mega-menus, pop-ups, and other interactive states. • See problems in context. Every finding is highlighted on the real page. The checker scrolls to the issue, re-opens the menu or dialog it appears in, and helps you understand the problem without hunting through selectors. • Fix faster. Each issue includes the relevant WCAG success criterion, a reference link, why it matters, and copy-ready remediation guidance. • Work inside LMS editors. Use the LMS Accessibility Checker & Fixer to review Canvas content directly inside the Canvas editor, with support for Brightspace, Blackboard, and Moodle coming soon. • Private by default. Accessibility analysis runs locally in your browser. A scan never clicks through, navigates away, or submits forms. WHAT IT CHECKS • Color and contrast, including text recolored on hover or focus • Forms, labels, and instructions • Keyboard and focus: visible focus indicator, tab order, reading order, keyboard reachability, and dialog focus • Images and media, including alt text • Page structure: headings, landmarks, lists, and regions • ARIA, roles, states, and accessible names • Language, tables, media and timing, viewport, and touch targets • Broken or unreachable links • Spelling in visible copy • LMS editor content, including Canvas pages, assignments, quizzes, and discussions Choose a Quick Scan, the recommended WCAG A/AA preset, or a Full Audit with AAA and best-practice checks. Review results in an Executive Summary with a Health Score, then filter by severity, category, or a specific check. BUILT-IN TOOLS • LMS Accessibility Checker & Fixer: find and fix accessibility issues directly inside supported LMS editors. Canvas is available now; Brightspace, Blackboard, and Moodle are coming soon. • Color Contrast Checker: pick any element with an eyedropper and get pass/fail results plus fix suggestions. • Image Alt Text Checker: review and classify every image’s alternative text. • Heading Structure Checker: see the page’s heading outline at a glance. • Page File Inventory: list every PDF, Office file, image, audio, and video on the page, then export a CSV or download files as a ZIP. Use it as a browser side panel or an in-page overlay. Part of the AristAI Accessibility Suite at accessibility.aristai.io, which adds batch checking, remediation, LMS accessibility workflows, and accessible-format export for PDFs, Microsoft Office files, Canvas and other LMS content, web pages, and video.