axe (axe-core) is the most widely used accessibility testing engine in the world. It powers browser extensions, CI/CD pipelines, and unit tests across thousands of development teams. Accessalyze is a newer approach: paste a URL, get an instant accessibility scan, AI-generated fix code, and a shareable compliance report.
Both tools are serious. This post gives you an honest, side-by-side look so you can choose the right tool — or combination — for your workflow.
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View the 2026 Reportaxe-core is an open-source JavaScript accessibility testing library developed and maintained by Deque Systems. It powers:
Key facts about axe:
Accessalyze is an automated WCAG 2.1 AA accessibility scanner built for teams who need results fast — without writing a single line of code. Key facts:
| Feature | axe-core (free) | axe DevTools Pro | Accessalyze |
|---|---|---|---|
| Price | Free (open source) | Paid (contact Deque) | Free scan; $19 full report; Pro plans |
| Setup required | ✗ npm install + code integration | ✗ Enterprise license + install | ✓ None — paste a URL |
| WCAG 2.1 AA ruleset | ✓ Strong automated coverage | ✓ Extended + guided rules | ✓ Full automated WCAG 2.1 AA |
| Works without coding | ✗ Requires dev setup | ◑ Browser extension works | ✓ URL-based, no code needed |
| CI/CD integration | ✓ Jest, Cypress, Playwright | ✓ Full pipeline support | ✓ REST API + GitHub Action |
| AI fix code | ✗ Not available | ✗ Not available | ✓ Generated per violation |
| Shareable report URL | ✗ JSON only | ◑ Dashboard (account required) | ✓ Permanent public links |
| Compliance PDF report | ✗ Not built in | ◑ Enterprise feature | ✓ $19 full report |
| Non-technical users | ✗ Developer tool | ◑ Some UI features | ✓ Designed for all roles |
| Multi-page batch scan | ◑ CLI supports multiple URLs | ✓ Crawl mode available | ✓ Batch and crawl scanning |
| Continuous monitoring | ✗ Manual run in CI only | ◑ Dashboard tracking | ✓ Scheduled scans + alerts |
| Color contrast detection | ✓ Good | ✓ Good | ✓ Good + CSS fix suggestion |
| Dynamic / SPA support | ✓ Runs inside the browser | ✓ Full browser execution | ✓ Headless rendering |
| Legal / audit documentation | ✗ Requires custom tooling | ◑ Enterprise only | ✓ Built-in compliance report |
axe-core's biggest advantage is that it lives inside your code. When you run cy.checkA11y() in Cypress or use jest-axe in a unit test, accessibility checks become part of your normal development flow. Violations fail the build — just like broken unit tests. For engineering teams with mature CI/CD pipelines, there's nothing better.
// Example: axe with Cypress
it('should have no a11y violations', () => {
cy.visit('/');
cy.injectAxe();
cy.checkA11y();
});
axe-core is MIT licensed. You can scan unlimited pages in CI at no cost. If your team has the engineering bandwidth to set it up and maintain the integration, you can build a comprehensive accessibility testing workflow for free.
Deque has refined the axe ruleset for over a decade. It's trusted by Google, Microsoft, and the accessibility community at large. The false-positive rate is notably low compared to other automated tools, which reduces noise in your test output.
Because axe runs inside a browser or Node process, it works on localhost, staging environments behind VPNs, and password-protected pages — anywhere your code can reach. Accessalyze requires a publicly accessible URL by default.
axe has one of the largest accessibility tooling ecosystems. Plugins, reporters, and integrations exist for almost every major framework. The Deque community forums and documentation are among the best in the field.
axe requires npm, a test framework, and developer time to integrate. Accessalyze requires none of that. Go to accessalyze.com, enter a URL, and see a full WCAG report in under 30 seconds. For a project manager, legal team, or client who needs an accessibility snapshot right now, this is the difference between "we have results" and "we need to schedule a sprint."
axe tells you what is broken and references the WCAG criterion. Accessalyze tells you what's broken and outputs corrected code. This is the feature that collapses the fix cycle.
<img src="product.jpg" alt="Blue wireless headphones with noise cancellation"> — an AI-written alt text and the corrected markup, ready to review and paste.
axe results live in your terminal or CI log. When a client asks "is our site accessible?" or a lawyer needs documentation, you can't send a log file. Accessalyze generates permanent report URLs and downloadable compliance reports — the kind of documentation that holds up in an ADA audit or vendor due diligence review.
A product manager, content editor, marketing director, or QA analyst can run an Accessalyze scan without touching the terminal. For organizations where accessibility is owned cross-functionally (not just by engineering), this matters. axe effectively locks accessibility testing inside the development team.
For agencies, freelancers, and consultants who need to deliver an accessibility audit to a client, the Accessalyze full report gives you a professional, branded compliance document for $19 — far cheaper than hiring an auditor or configuring enterprise axe DevTools Pro.
No setup, no account. Enter your URL and see your WCAG violations in seconds. Full compliance report for $19.
Scan My Website Free →These two tools are not really competitors — they solve different problems in the accessibility workflow. Here's how engineering teams typically combine them:
In this workflow, axe handles the inner loop (unit/integration tests) and Accessalyze handles the outer loop (whole-site audits, reporting, and monitoring).
Both axe and Accessalyze use automated rules to detect WCAG 2.1 AA violations. No automated tool catches 100% of violations — automated tools typically cover 30–57% of WCAG 2.1 AA success criteria. Manual screen reader testing is still required for full coverage.
Where the rulesets differ: axe-core was built to minimize false positives, so it sometimes flags fewer issues than a more aggressive scanner. Accessalyze casts a slightly wider net on WCAG 2.1 AA checks, which surfaces more potential issues — some of which require judgment to assess. Neither approach is strictly better; it depends on your tolerance for false positives and your team's ability to triage.
| Tier | axe | Accessalyze |
|---|---|---|
| Free | axe-core (open source) + free browser extension | Free URL scan — no account, no limit on scans |
| One-time report | — | $19 full compliance report per scan |
| Pro / paid | axe DevTools Pro: contact Deque for pricing (enterprise) | Pro plans for monitoring, API, and team features |
| CI/CD | Free via axe-core npm package | API access on Pro plans |
axe-core is free for engineering teams who do the integration work themselves. axe DevTools Pro is enterprise-priced. Accessalyze's free tier gives everyone instant scans, with the $19 report the most common paid option for agencies and auditors who need documentation.
localhost or a staging environment not accessible by URLAccessalyze runs its own accessibility rule engine, which covers WCAG 2.1 AA criteria and draws from the same underlying standards that axe-core implements. The results will largely overlap on common violations (missing alt text, color contrast, form labels), but the two tools have independent implementations and may differ on edge cases and WCAG criteria coverage.
Yes. Accessalyze has a REST API that returns structured JSON results for any public URL. You can integrate it into GitHub Actions or any other CI system. See our API documentation. For testing private/localhost URLs, axe-core remains the better choice since it runs inside your local environment.
axe DevTools Pro adds guided testing workflows, extended WCAG rules, VPAT generation, and team collaboration features. For enterprise organizations with dedicated accessibility programs, the added features are valuable. For small to mid-sized teams, axe-core free + Accessalyze for reporting often provides better coverage at a fraction of the cost.
If you're dealing with or anticipating an ADA demand letter, you need documentation — and Accessalyze's full compliance report ($19) is specifically designed for that use case. The report gives you a timestamped, comprehensive record of your site's WCAG status. axe-core results in a terminal log do not serve this purpose effectively. See our guide on ADA compliance for small businesses.
axe-core is the best tool for developers who want to bake accessibility into their development workflow. It's open source, battle-tested, and integrates with every major test framework. If you have the engineering team to set it up, you should use it.
Accessalyze is the best tool for everyone else — and for the parts of the workflow that axe can't cover: instant no-setup scanning, AI fix code, shareable compliance reports, and client-ready audit documentation.
For most serious accessibility programs, the answer is both: axe in your test suite during development, Accessalyze for whole-site audits, client reporting, and continuous monitoring.
Scan any website instantly. Get AI fix code for every violation. Full compliance report for $19.
Scan My Site Now →About Accessalyze: Accessalyze is a WCAG 2.1 AA accessibility scanner that helps websites identify and fix accessibility violations. Free scans, AI fix code, and full compliance reports available at accessalyze.com.
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