Accessignal alerts you the same day a theme update, app install, or content change breaks accessibility on your Shopify store. Continuous scans diff against your last clean baseline, so a new issue is a ticket with a cause, not a mystery. Monthly evidence reports document the whole history for legal defense.
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Anything that changes your scan results: a theme publish, a new or updated app, a section edit in the customizer, a pixel or embed change. Accessignal rescans on a schedule and after detectable storefront changes, then diffs against your baseline. New failures arrive as an alert naming the criterion, the component, and the change window that introduced them.
Because they are invisible until someone complains or sues. A store that passed last quarter fails today after one app update, and nobody knows. Regression alerts compress that blind window from months to hours, which keeps your compliance record continuous instead of a series of expired snapshots.
Your first clean scan sets the baseline. Every later scan is compared against it: fixed issues drop off, new issues flag, and recurring issues surface as patterns tied to specific apps or templates. The baseline plus the diff log is the backbone of the monthly evidence report your counsel receives.
| Capability | Accessignal | Quarterly audit |
|---|---|---|
| Same-day regression alerts | Yes | No |
| Continuous scan baseline and diff log | Yes | No |
| Change-window attribution | Yes | No |
| Monthly evidence reports | Yes | No |
| Catches app-update breakage | Yes | No |
| Living compliance record | Yes | No |
Themes ship markup. An update can remove a skip link, reorder headings, change focus styles, or alter ARIA roles across every page at once. Shopify theme updates also reset customizations that were applied to an older version. Without monitoring, a store learns about the breakage from a complaint or a demand letter.
Anything that injects visible UI: reviews, upsells, subscriptions, size charts, chat, and page builders. An app update changes its injected markup store-wide overnight. Accessignal attributes failures to the responsible app so you can report the issue to the vendor with specifics and a capture of the failing state.
Critical templates like product and cart are scanned daily, so a regression there is flagged within 24 hours. Full-store scans run weekly. When a storefront change is detected, a targeted rescan runs immediately. Alerts go to email, and each one includes the failing state, the criterion, and the suspected cause window.
A regression is a failure on a template or component that previously passed, which points at a change. A new issue is a first-time failure on a component that was never clean, usually newly added content or a new app. The diff log separates the two because they have different owners and different urgency.
They are deduplicated by root cause. One broken component shared by two thousand product pages is one alert with a page count, not two thousand alerts. Each alert carries severity, affected templates, and the fix step, so a developer can triage in minutes and close it with a verification rescan.
Every engagement starts with a free accessibility audit that sets your baseline: current issue count, severity ranking, and the change log going forward. Ongoing monitoring is quoted per storefront after the audit, based on store count and scan cadence. No long-term contract.