Best Lighthouse Alternative — Free Accessibility Scanner

Google Lighthouse is built into Chrome DevTools, making it the most accessible (and free) auditing tool available. Its accessibility audit runs a subset of axe-core rules — roughly 50 checks compared to the 100+ rules in the full axe-core library. This means Lighthouse catches common issues but misses many violations that a comprehensive scan would flag.

Lighthouse is also a manual, single-page tool. Each audit requires opening DevTools, navigating to the Lighthouse tab, running the audit, and reading the results. There is no monitoring, no scheduling, no multi-page scanning, and no history tracking. For developers doing a quick sanity check, it is great. For systematic accessibility work, it falls short.

Both tools are free for basic use, but CompliScan goes significantly further in coverage and capabilities:

• Rule coverage — Lighthouse: ~50 axe-core rules. CompliScan: full axe-core rule set (100+ rules)
• AI fixes — Lighthouse: links to generic documentation. CompliScan: AI generates specific code changes per violation
• No DevTools needed — CompliScan runs in the browser as a web app, accessible to non-developers
• Monitoring — Lighthouse: manual only. CompliScan: scheduled automated scans on paid plans

Lighthouse gives you a score. CompliScan gives you a score, the detailed issues, and the code to fix each one.

Lighthouse was designed as a general web quality audit tool covering performance, SEO, best practices, PWA, and accessibility. Accessibility is one of five categories, and it receives proportionally limited attention:

• Incomplete rule set — Lighthouse runs approximately half of axe-core's available rules, missing many WCAG criteria
• Score inflation — a Lighthouse accessibility score of 90+ can still mean dozens of unfixed WCAG violations that Lighthouse did not test for
• No fix guidance — violation descriptions link to Google's web.dev documentation, which explains the rule but does not suggest specific fixes for your code
• Chrome only — Lighthouse runs in Chrome DevTools or via CLI, making it inaccessible to non-technical stakeholders

A high Lighthouse score creates false confidence. Teams that rely solely on Lighthouse for accessibility often discover significant gaps when tested with more comprehensive tools.

CompliScan uses the complete axe-core rule set, catching violations that Lighthouse's subset misses entirely. This means your compliance score reflects your actual WCAG status, not an optimistic approximation.

The AI fix suggestion layer transforms the experience from "here is what is wrong" to "here is exactly how to fix it." When Lighthouse tells you an image needs alt text, you still need to figure out what the alt text should be. CompliScan's AI analyzes the image context and suggests appropriate alt text. This difference multiplies across dozens of issues.

CompliScan is also accessible to non-developers: product managers, designers, and QA testers can scan a page by entering a URL. No Chrome DevTools knowledge required. For development teams, CompliScan's monitoring plans catch regressions automatically — something Lighthouse simply cannot do.