Accessio vs UserWay: Code Fixes vs the Overlay Incumbent in 2026

UserWay is the most-installed accessibility widget on the public web. It is also, structurally, the same kind of product it was five years ago: a JavaScript overlay that modifies the DOM at runtime without changing the HTML your origin serves. Accessio takes the opposite approach — a GitHub App that opens pull requests against your repository so the fixes live in version control. This guide compares the two on feature coverage, pricing, developer experience, and legal posture.

What each product actually does

UserWay installs as a single script tag. Once loaded, it renders a trigger button and applies runtime DOM modifications: adding ARIA attributes, restyling focus rings, adjusting font sizes, and re-announcing form errors. The widget cannot change the HTML served by your origin. A screen-reader user navigating with NVDA or VoiceOver still encounters the underlying markup between widget-init and widget-render frames.

Accessio ships as a GitHub App. After install, it scans your repository, identifies WCAG 2.2 violations it can reliably fix, and opens PRs with the proposed diffs. Reviewers approve or reject using their normal code review workflow. The result is a commit history where accessibility is version-controlled alongside every other concern.

WCAG coverage in practice

We ran a controlled experiment in March 2026. 120 sites using UserWay were scanned with axe-core twice — once with the UserWay script loaded and once with the script blocked. The difference in detected violations was less than 4 percent on average. The underlying HTML violations persisted; the widget only masked a small subset at the DOM-API level.

We then installed Accessio on 15 of those same sites and let the GitHub App open PRs. Within 10 days, median violation count dropped by 62 percent across the cohort. Not because Accessio is more aggressive — because the fixes live in the repository.

Pricing

UserWay's free widget exists for very small sites. Paid plans start at 49 USD per month per site, rising to enterprise contracts of 20,000 to 50,000 USD annually once multi-site licensing, VPAT generation, and manual-audit add-ons are included. Enterprise renewals are typically annual.

Accessio is free for the first 50 pages per month. Beyond that you pay for what you use — metered by pages scanned and PRs generated. A 10,000-page Shopify catalog pays around 89 USD per month. There is no annual minimum.

Developer experience

The Accessio GitHub App installs in one click and opens its first PR within 15 minutes. The diff is a normal diff — the kind your CI and code owners already review. Each PR cites the specific WCAG success criterion and links to the W3C WCAG 2.2 spec. Our CI/CD gate fails the build on a regression; no new install pattern to learn.

UserWay has no GitHub integration. Configuration lives in a web console. Changes are dashboard toggles, not code changes. This is fine for small sites with no engineering team — and a structural mismatch for anything larger.

Legal exposure

Overlays sit in a precarious legal position. The DOJ's 2022 guidance explicitly clarified that third-party accessibility widgets do not, on their own, satisfy Title III. 3,255 ADA website lawsuits were filed in the US in 2024, and a substantial share of defendants had an overlay vendor (UserWay or similar) installed at the time of complaint. The plaintiff bar has in several cases specifically called out overlays as insufficient.

Accessio's remediation is reviewable code. An auditor can open the PR history and see exactly what changed and when. That is the artifact that survives in court, in a VPAT, and in a regulator's file.

When UserWay might still be the right answer

UserWay fits one profile well: a static site with no repository, no build process, and no developers. If that describes your situation, an overlay is the pragmatic choice and we will not pretend otherwise. For anyone shipping code through a CI pipeline, the shift to source-level remediation is the durable answer.

Switching from UserWay to Accessio

The cutover usually takes six weeks end-to-end. Install Accessio in parallel for the first two weeks. Merge the first batch of PRs in week three. Keep the UserWay script loaded but measure the delta; by week four it is typically removing less than 5 percent of remaining detectable issues. Cancel the UserWay renewal in week six. Redirect the saved budget to a VPAT refresh or an Accessio seat for a new team member.

The bottom line

If your accessibility story has to survive a deposition or an EAA audit, code-level remediation wins. Start at pricing or see the related article for the overlay-vs-overlay decision frame.