AccessPulse vs WAVE

Side-by-side comparison

Different tools for different workflows

WAVE is a spot-check tool. You open a page, click the extension, and get a visual overlay showing exactly where violations live in the DOM. It's fast, intuitive, and free. Designers and PMs can use it without touching a terminal. For checking a single page during development, WAVE is hard to beat.

AccessPulse is a monitoring tool. It scans your pages automatically via API or CI/CD, tracks scores over time, detects regressions between deploys, and blocks PRs that introduce new violations. It answers the question WAVE can't: “Did last week's deploy break anything?”

This isn't a replacement argument. Many teams should use both.

The engine difference

WAVE uses WebAIM's proprietary scanning engine. AccessPulse uses axe-core by Deque — the same engine behind Chrome DevTools, Lighthouse, and most enterprise accessibility platforms. The engines overlap significantly but aren't identical.

Differences I've noticed in practice:

• ARIA validation. axe-core is more thorough on ARIA role and attribute checking (WCAG 4.1.2). WAVE flags missing ARIA but is less granular about incorrect usage patterns.
• Contrast detection. WAVE historically struggles with CSS gradients, transparent backgrounds, and background-clip: text. axe-core handles more edge cases for WCAG 1.4.3 color contrast. Neither handles images of text reliably.
• Visual feedback. WAVE injects icons directly into the page, making violations spatially obvious. axe-core returns JSON with CSS selectors. WAVE is better for visual thinkers; axe is better for automated pipelines.
• False positives.WAVE tends toward fewer false positives but more “alerts” (potential issues that need human review). axe-core is more aggressive about flagging definite violations and separates “needs review” items clearly.

Both engines cover WCAG 2.2. Both catch roughly the same 30–57% of WCAG issues that any automated tool can detect. The remaining 43–70% requires manual review regardless of which engine you choose.

WAVE API vs AccessPulse API

WAVE does have an API, priced at $0.025 per credit (one credit per basic page evaluation). You can use it to scan pages programmatically. But there are gaps if you want CI/CD integration:

• No CI/CD workflow.The WAVE API returns results but doesn't integrate with GitHub Actions, GitLab CI, or any pipeline natively. You'd need to write the integration glue yourself.
• No historical tracking.Each WAVE API call is stateless. It doesn't store results, track trends, or detect regressions. You'd need to build your own database layer.
• No regression detection.WAVE tells you what's broken right now. It can't tell you what's newsince your last deploy. That distinction matters when you're deciding which failures to block a release on.
• Per-credit cost.At $0.025/credit, scanning 100 pages daily costs ~$75/month. AccessPulse's $29/month Starter tier includes 1,000 scans — roughly $0.029/scan but with dashboard, history, and CI/CD included.

If you just need the raw scan data and you're comfortable building CI/CD integration, historical storage, and regression logic yourself, the WAVE API works. That's 10–40 hours of engineering work, in my experience.

Where WAVE wins

WAVE is better than AccessPulse in several real ways. I don't want to gloss over them.

Price.The browser extension is free. For a solo developer checking pages during development, you can't beat free. The WAVE API is also cheaper per-scan than most alternatives if you only need raw results without the monitoring layer.

Visual clarity.WAVE's inline icons make violations spatially obvious. You see the red icon next tothe broken element, in context. AccessPulse gives you a CSS selector and a description — useful for developers, less intuitive for designers or content authors who think visually.

Brand trust.WebAIM has been doing accessibility work for over 25 years. They're a nonprofit housed at Utah State University's Center for Persons with Disabilities. Their annual WebAIM Million study is the most-cited source on web accessibility state. When WebAIM says a page has issues, people listen. AccessPulse is new.

Accessibility of the tool itself. WAVE is built by accessibility professionals. Its interface is designed to be accessible. That matters for teams where the people doing accessibility reviews are themselves assistive technology users.

Who should use which

Use WAVE if:

• You're manually spot-checking pages during development or content review
• Your team includes non-technical reviewers (designers, content authors, PMs) who need visual feedback
• You need a free tooland don't need automated monitoring
• You want a second engineto cross-check axe-core results (I recommend this — different engines catch different things)

Use AccessPulse if:

• You need CI/CD integration that blocks PRs with new violations
• You want historical tracking to see score trends across deploys
• You need to answer “did this deploy break anything?” without manually re-running scans
• You want alerting when accessibility regresses
• You need an API for batch scanning with built-in result storage

Use both if:

• You want two scanning engines for broader coverage (WAVE catches things axe-core misses, and vice versa)
• Developers use AccessPulse in CI/CD while designers use WAVE for visual spot-checks
• You care about catching the maximum automated percentage of the 57% detection ceiling

The honest take

I have enormous respect for WebAIM. We cite the WebAIM Million study on our blog and methodology page. WAVE is an important tool that has introduced millions of people to accessibility testing.

The gap WAVE leaves is monitoring. It tells you what's broken right now but doesn't tell you when it broke, what changed, or whether your next deploy will make it worse. If your accessibility practice is “someone manually runs WAVE before each release,” you're one forgotten check away from shipping regressions.

AccessPulse fills that gap. It won't replace the WAVE extension in a designer's workflow — and it shouldn't try to. But it will catch the regressions that slip through when human spot-checking is the only safety net.

Neither tool makes your site WCAG compliant. Automated scanners catch roughly 57% of WCAG issues. The rest — alt text quality, reading order, cognitive accessibility, video captions — requires manual review.

Run a free AccessPulse scan to see how axe-core results compare to what WAVE finds on your site. Different engines, different catches. Use both.