Tenon vs UserWay 2026: Fix It vs Overlay It
These two tools take fundamentally different approaches to web accessibility. Tenon is a developer REST API that finds real WCAG violations in your source code. UserWay is an AI overlay widget that layers JavaScript on top of your site at runtime — without changing a single line of source code. Here's what that difference means for your compliance, your legal risk, and your users.
⚠️ The Overlay Category Is Under Regulatory Pressure
The FTC reached a consent order with accessiBe (UserWay's main competitor) in November 2025, requiring a $1 million payment for deceptive compliance claims. UserWay operates in the same overlay category and makes similar claims. Federal courts have repeatedly found that overlay widgets do not constitute ADA compliance — courts examine whether users can actually access the site, not whether a widget is installed. This context is material when evaluating UserWay as a compliance solution.
TL;DR
- Tenon: Developer accessibility API. Finds real WCAG violations via JSON API for CI/CD integration, testing frameworks, and build pipelines. Free tier available; paid plans from ~$50–$100/mo.
- UserWay: AI overlay widget. Layers JavaScript on your site at render time without fixing source code. Courts and regulators have rejected overlays as compliance evidence. Starts at ~$490/yr.
- Middle path: RatedWithAI at $29/month — axe-core scanning with prioritized fix lists, designed for non-developers who need real violation data without a developer API integration.
Quick Comparison: At a Glance
Tenon
Developer accessibility testing API
- 💰 Pricing: Free tier / $50–$100+/mo API / Enterprise custom
- 🎯 Approach: API-first WCAG testing for CI/CD pipelines
- 📋 Engine: Proprietary WCAG rule library
- 🔧 Target: Developers, QA engineers, engineering teams
- ✅ Compliance: Finds and documents real violations
UserWay
AI overlay widget — regulatory/legal risk
- 💰 Pricing: $490–$1,490+/yr depending on page count
- 🎯 Approach: JavaScript widget injected at render time
- 📋 Engine: AI overlay (proprietary)
- 🔧 Target: Non-technical site owners seeking quick fix
- ⚠️ Compliance: Does not fix source code violations
The Fundamental Difference: Fix vs Mask
The clearest way to understand this comparison is to trace what actually happens when someone using a screen reader visits a site that uses each tool.
With Tenon
- Developer runs Tenon API against the site during CI/CD
- Tenon returns JSON listing every WCAG violation with fix guidance
- Developer fixes the violations in the source code
- Fixed HTML ships to all users — including screen reader users
- Screen reader encounters properly structured HTML
- The accessibility improvement is in the actual code, not a script
With UserWay
- UserWay script tag added to the site
- When the page loads in a browser, UserWay's JS runs and modifies the DOM
- Source HTML is unchanged — violations still exist in the code
- Screen readers may process the page before JS modifications complete
- Script-blockers, slow connections, or AT configurations can bypass UserWay entirely
- Accessibility improvements are fragile, conditional, and not in the source
Over 800 accessibility professionals, the National Federation of the Blind, the American Council of the Blind, and federal courts have documented that overlay widgets — regardless of vendor — do not achieve genuine web accessibility. The FTC's 2025 action against accessiBe (UserWay's primary competitor) confirmed at a regulatory level what practitioners had observed for years.
Pricing Comparison 2026
⚠️ The Overlay Subscription Trap
UserWay's pricing is a recurring annual fee. Stop paying, and the widget is removed — your site reverts to its original state with all violations intact. You're not buying accessibility; you're renting a runtime mask over violations that remain in your source code. Tenon's approach requires an upfront investment (developer time to remediate violations), but once fixed, your site remains accessible regardless of any subscription status.
Feature Comparison
Legal Risk: What Courts Have Found About Overlays
Multiple federal courts have explicitly rejected the argument that installing an accessibility overlay — including UserWay — satisfies ADA compliance obligations. In cases where defendants raised their overlay installation as a defense, courts found it insufficient: the question courts ask is whether people with disabilities can actually use the site, not whether a widget is present.
The legal reality of overlays
- Overlays don't remove underlying barriers — Courts examine actual user experience, not widget installation
- Source-code violations remain actionable — JavaScript running over broken HTML doesn't fix the HTML
- Plaintiff attorneys disable JavaScript — Standard practice to expose violations that overlays attempt to mask
- FTC precedent (2025) — The consent order against accessiBe signals regulatory scrutiny of the entire overlay category
- UserWay has faced litigation — UserWay itself has been named as a defendant in class action lawsuits alongside its customers
Tenon's approach — finding violations at the code level, creating a documented remediation record, and actually fixing source HTML — is the posture that supports an ADA compliance defense. Courts treat documented, ongoing remediation efforts as evidence of good-faith compliance programs. Paying for a widget to run over unfixed code does not.
Who Should Choose Which?
Choose Tenon if…
- You have a development team that can integrate automated testing into CI/CD
- You want programmatic access to WCAG violation data via REST API
- You need to test accessibility across testing frameworks (Selenium, Cypress, Playwright)
- You want to build accessibility gates into your build pipeline
- Your goal is actual code-level compliance, not a recurring widget subscription
Be cautious with UserWay if…
- You need documented evidence of compliance remediation, not widget presence
- You're in a regulated industry where compliance evidence will be scrutinized
- You've received an ADA demand letter — plaintiff attorneys know overlays
- You need your site to be accessible when JavaScript is blocked or slow
- You want your users with disabilities to actually have a good experience
Consider RatedWithAI if…
- You want real axe-core WCAG violation detection without needing a developer API integration
- You're a business owner or non-technical team member who needs an actionable fix list
- You want compliance documentation (scan history, violation reports) at $29/month instead of $490+/year
Better Alternatives to UserWay
1. RatedWithAI — axe-core Scanning at $29/month
Starts at $29/month
For non-developers who want real WCAG violation data — not an overlay — RatedWithAI provides axe-core scanning with prioritized fix lists at $29/month. Less than UserWay's entry-level annual fee for a single month. Shows you actual violations your developer can fix, with documentation of your compliance effort for legal purposes.
Start Free Scan →2. Deque axe DevTools — The Gold Standard for Developer Testing
Free extension / $79+/mo Pro
Deque created axe-core, the engine used in most serious accessibility testing tools (including RatedWithAI). axe DevTools offers a free browser extension and a Pro plan with CI/CD integrations. If you want developer-focused accessibility testing with the most trusted engine in the industry, Deque axe DevTools is the category leader — and its free extension delivers more real value than UserWay's paid overlay.
3. Google Lighthouse — Free axe-core Scanning Built Into Chrome
Free
Google Lighthouse is built into Chrome DevTools and uses axe-core for accessibility scanning. It's free, requires no setup, and provides immediate WCAG violation data for any URL. For bootstrapped projects who want real accessibility data before committing to a paid tool, Lighthouse is the fastest starting point — and it's genuinely free, unlike UserWay's annual subscription.
4. Tenon — API-First for Development Teams
Free tier / $50–$100+/mo API plans
If you have a development team and want to integrate WCAG testing directly into your CI/CD pipeline, Tenon provides the API infrastructure to do it. Free tier available for evaluation. Unlike UserWay, Tenon's output guides actual code remediation rather than just overlaying a visual widget.
Get real WCAG violation data — not an overlay
axe-core scanning with a prioritized fix list your developer can act on. Actual compliance documentation. No JavaScript widget, no recurring fee for a mask over your violations.
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Frequently Asked Questions
Is Tenon a better accessibility tool than UserWay?
For genuine WCAG compliance, yes — Tenon is substantially better. Tenon identifies real violations in your source code and provides developer-consumable data to fix them. UserWay is an overlay that runs JavaScript over your unfixed code at render time. Courts, regulators, and the accessibility community have consistently found that overlays do not constitute compliance. If you have developer resources, Tenon's API-first approach is the right path. If you need a non-developer interface, RatedWithAI ($29/month) provides real violation data without the overlay approach.
Has UserWay been sued?
Yes. UserWay and companies using UserWay have been named in ADA accessibility lawsuits. Plaintiffs and their attorneys routinely disable JavaScript to expose the underlying violations that overlays attempt to conceal, then sue based on those underlying code violations. The widget's presence does not protect against these suits — in fact, it can be used as evidence that the site owner was aware of accessibility obligations but chose a non-compliant approach.
What's the difference between Tenon and UserWay technically?
Tenon is a REST API — you send it a URL or HTML, it returns a JSON payload with every WCAG violation, the WCAG criterion violated, the affected element, and recommended remediation guidance. Developers use this output to fix violations in source code. UserWay is a JavaScript widget — you add a script tag to your site, and UserWay's AI runs in the browser when pages load, modifying the DOM to attempt to improve accessibility at runtime. The source code is never changed. If UserWay's script doesn't load, the original violations are fully exposed.
Does UserWay have a free plan?
UserWay does not offer a free plan — it offers a trial period. Tenon has a free tier with limited monthly API calls. For a free accessibility scan of your site, Google Lighthouse (built into Chrome DevTools) and RatedWithAI's free scan feature both provide real WCAG violation data at no cost.
What happened to accessiBe? Is UserWay next?
In November 2025, the FTC reached a consent order with accessiBe — UserWay's main overlay competitor — requiring a $1 million payment and an end to deceptive compliance claims. UserWay operates in the same product category with similar marketing claims. While UserWay has not yet faced the same regulatory action, the FTC precedent creates meaningful risk for the entire overlay category. Organizations evaluating UserWay should factor regulatory trajectory into their compliance strategy.
Can I use Tenon as a non-developer?
Tenon is designed for developers — its primary interface is a REST API that returns JSON violation data. Non-developers who need WCAG violation data without a developer API integration have better options: RatedWithAI ($29/month) provides axe-core scanning with a human-readable, prioritized fix list in a non-developer interface, with compliance documentation for legal purposes.