Yes. Accessibility scan tools with continuous monitoring run on a recurring schedule, evaluating pages against WCAG success criteria at set intervals rather than only on demand. Daily, weekly, monthly, or custom cadences are standard. Each scan produces a fresh report, and changes between scans surface new issues introduced by code updates, content edits, or template changes.
Continuous monitoring never replaces a manual audit. Scans detect approximately 25% of accessibility issues, and that ceiling applies whether a scan runs once or every hour.
| Key Point | What It Means |
|---|---|
| Schedule options | Daily, weekly, monthly, or custom cadences defined per project or URL set. |
| Detection ceiling | Scans identify approximately 25% of WCAG issues, regardless of frequency. |
| Change detection | New issues introduced between scans are flagged in the next report. |
| Scope control | URL lists, sitemaps, or crawl depth determine which pages are evaluated. |
| Authenticated pages | Logged-in areas require a browser extension running within an active session. |
How Continuous Monitoring Works
A monitoring configuration defines three things: which URLs to evaluate, how often to evaluate them, and where to send the results. The scanner loads each page, evaluates the HTML, CSS, and ARIA attributes against WCAG success criteria, and records any flagged items.
Results are stored historically, so the same URL can be compared across scans. When a new issue appears in the latest report that was not present in the previous one, it stands out as a change rather than a baseline finding. This is how monitoring surfaces regressions introduced by deployments.
Scheduling Cadence
Daily scans suit high-velocity sites where content or code changes often. Weekly is common for marketing sites with moderate update frequency. Monthly cadence fits stable sites that rarely change. Custom schedules align with release cycles, so a scan runs the morning after each deployment.
The right cadence reflects how quickly regressions need to surface. A page that changes twice a year does not need daily scanning. A retail site with weekly product launches benefits from scans that catch issues before customers do.
What Continuous Scans Can and Cannot Detect
Continuous scans reliably identify issues that can be evaluated through code inspection. Missing alt attributes, form inputs without labels, and incorrect ARIA roles fall into this category.
What scans cannot evaluate is the 75% of WCAG that requires human judgment. Whether alt text is meaningful, whether focus order matches visual order, whether an interactive pattern works with a screen reader, whether a video has accurate captions: none of these are answerable by a scanner running on any schedule. Scans flag the presence or absence of code; they do not evaluate user experience.
Authenticated and Dynamic Content
Public URLs are the default target for scheduled scans. Pages behind login require a different approach. Authenticated page scanning typically uses a browser extension running within an active session, capturing the rendered DOM for evaluation. Single-page applications and content loaded after user interaction fall into the same category, since a scanner hitting a URL may not see the final rendered state.
Continuous monitoring configurations account for this by combining scheduled URL-based scans with session-based scans of authenticated or dynamic areas.
Where Continuous Monitoring Fits
Monitoring is most useful as the connective layer between audits. An audit establishes a baseline and identifies the full scope of issues on evaluated pages. Remediation addresses those findings. Continuous scans then watch for regressions and flag new code-level issues introduced over time. When significant changes accumulate or when a new product area launches, another audit fills in what scans cannot see.
Scan tools that monitor continuously are part of the picture, not the whole of it. Pairing them with human evaluation is what produces a reliable conformance posture.