Tracking Accessibility Regressions in Weekly Releases
Fast release cycles fix one barrier and ship another. A simple regression register that keeps gains from quietly unravelling between audits.
Most stores do not lose accessibility in one big redesign. They lose it a little at a time: a banner here, a new widget there, a checkout extension updated on a Friday. By the next audit, last years fixes have thinned out and nobody can say when.
A regression register is the antidote. It is a small, disciplined record of what was fixed, how it was verified, and what later releases did to it. This guide shows how to run one without adding a new bureaucracy.
Record fixes in a form that can be retested
Each entry needs the issue, the page or template, the fix description, the date, and the exact retest steps that proved it worked. Fixed the menu is not retestable. Menu opens from a button, focus moves to the first link, and Escape returns focus to the button is.
Store the retest steps with the entry, not in a separate document. The register is used under time pressure before a release, and a record that sends the tester hunting for instructions will be skipped.
Sample the register before every release
A full retest of every fix each week is unrealistic. Sample instead: all fixes on purchase paths every release, plus a rotating fifth of the rest, so every fix is rechecked within about a month. Note the sample and the result in the release log.
When a sampled fix has regressed, widen the check to fixes in the same template or component before shipping. Regressions travel in families, because one component change touches every fix built on it.
Name the usual regression sources
In practice the repeat offenders are third party widgets, promotional components added for a campaign, checkout extensions, and global header and footer edits. Tag each register entry with its component so the register itself reveals which supplier or surface causes the most returns.
Share that pattern, without blame, in vendor and sprint reviews. A component that has regressed three times needs a contract or architecture conversation, not a fourth identical fix.
Report the regression rate, not just the fix count
A team that reports only fixes closed will look healthy while the live site stands still. Report both: fixes made, and fixes found regressed, per period. The ratio is the honest measure of whether accessibility work is sticking.
Set a simple rule: if the regression rate rises two periods in a row, the next sprint includes a component level fix, such as locking a template pattern or replacing a widget, before any new feature work on that surface.
Related reading
If this topic is useful, these earlier guides go deeper on connected questions: Monitoring PDFs and Downloadable Documents for Accessibility, Accessibility Alerts Before Holiday Traffic Peaks, and Cutting Accessibility Alert Fatigue Without Missing Blockers.
Frequently asked questions
What is an accessibility regression?
A barrier that was previously fixed and verified, and has since returned, usually because a component, template, or third party tool changed. It differs from a new issue, which was never addressed before.
How big should a regression register be?
Only as big as the fix history. One line per verified fix, with retest steps, is enough. Registers fail when they try to become full audit databases instead of a release tool.
Who should own the register?
Whoever owns release quality for the store, with developers and testers updating it as part of closing a fix. A register owned by one specialist and ignored by the release process changes nothing.
What is a good regression rate target?
As close to zero on purchase paths as the team can hold, and a falling rate elsewhere. The trend matters more than any single number, because it shows whether fixes are becoming durable.