Free accessibility scanner with screen reader simulation, tab order visualization, contrast checker, and deep structural analysis.
Users
13
−1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#176K
#147K among extensions
Version
1.0.0
updated 4 Apr 2026
Users
monthly, 6 months
Latest, 15 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 6 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About a11yProbe
a11yProbe — Accessibility Scanner That Goes Beyond the Basics
Most accessibility tools stop at surface-level checks — missing alt text, empty links, low contrast. a11yProbe goes deeper. It probes the structural architecture of your page to find the problems that other scanners miss.
What makes a11yProbe different:
->Structural analysis — detects heading level skips, orphaned content outside landmarks, broken document outlines, and missing page regions
->Keyboard architecture audit — finds focus traps, unreachable interactive elements, broken tab sequences, and widgets with click handlers but no keyboard support
->ARIA deep validation — catches conflicting roles, orphaned references, invalid state values, and role/element mismatches
->Behavioral testing — simulates real keyboard interaction to catch focus traps and unexpected context changes that static analysis cannot detect
->Smart false-positive suppression — filters known false-positive patterns so you focus on real issues, not noise
->Cross-engine deduplication — runs multiple scanning engines and shows each issue once, not repeated across scanners
Built-in tools:
->Screen reader simulator — experience your page the way JAWS/NVDA users do
->Tab order visualization — see the keyboard navigation sequence at a glance
->Contrast checker — hover any text for live contrast ratios
->Heading tree, landmark map, reading order, and focus issue overlays
->Behavioral test runner — automated keyboard and focus interaction tests
->PDF report generation with WCAG conformance mapping and legal compliance assessment
Privacy first:
All scanning runs entirely in your browser. No data is sent to any server. No analytics, no tracking, no account required.
Open source under the MIT license.