After your accessibility audit is complete and remediation is underway, automated scans on a recurring schedule are the most practical way to monitor your digital asset between evaluations. Scans do not replace audits, but they catch a subset of issues continuously so your team can address regressions before they pile up.
A recurring scan schedule turns accessibility monitoring from a one-time event into an ongoing practice. The cadence you choose depends on how often your content changes, how large your site is, and how much risk you carry.
| Consideration | What to Know |
|---|---|
| Purpose of recurring scans | Catch regressions and new issues between audits |
| What scans cover | Approximately 25% of accessibility issues |
| Recommended frequency | Weekly or biweekly for active sites; monthly for stable ones |
| When to re-audit | After major redesigns, new feature launches, or annually |
| Scans vs. audits | Completely separate activities with different purposes |
Why Scans Matter After an Audit
An accessibility audit identifies issues across your digital asset at a specific point in time. The moment your team publishes new content, pushes a code update, or adds a third-party integration, new issues can appear. Scans provide a consistent check on the portion of WCAG criteria that automated tools can detect.
Scans and audits are completely separate activities. A scan flags code-level patterns like missing alt attributes, empty form labels, or color contrast ratios that fall below WCAG 2.1 AA thresholds. A manual audit conducted by an auditor evaluates the full range of conformance criteria, including keyboard navigation, screen reader behavior, and content structure that no automated tool can assess.
The two work in sequence. The audit gives you a complete picture. The scan keeps watch over the fraction it can detect.
How Often Should You Schedule Scans?
Frequency depends on your site’s rate of change. A marketing site publishing daily blog posts and updating landing pages weekly needs more frequent scans than a static informational site that changes quarterly.
For most organizations, a weekly or biweekly scan strikes the right balance. It catches regressions quickly without generating alert fatigue. Sites with minimal content updates can move to a monthly cadence and still maintain solid monitoring coverage.
Government entities working toward ADA Title II compliance or organizations subject to Section 508 requirements may want to lean toward the more frequent end. The regulatory exposure makes early detection more valuable.
What Pages Should Scans Cover?
Start with the pages your audit evaluated. These are the pages where you already have a conformance baseline. Scanning them on a recurring basis tells you whether that baseline is holding.
Beyond the audit scope, prioritize pages with the most traffic and pages with dynamic content like forms, search results, and authenticated workflows. These are the areas most likely to introduce new accessibility issues through content changes or feature updates.
You do not need to scan every page on every cycle. A rotating sample, combined with consistent coverage of high-traffic pages, gives you meaningful data without unnecessary overhead.
Choosing a Scan Cadence That Fits Your Workflow
The Accessibility Tracker Platform includes built-in scan scheduling, which makes it simple to configure frequency and page sets. For teams using other tools, most accessibility scanning products offer scheduling features. What matters more than the tool is that your team actually reviews the results.
A scan that runs weekly but goes unreviewed for a month provides no value. Assign ownership. Designate who reviews scan results, who triages new issues, and who confirms that flagged items are genuine (automated scans produce false positives).
Accessible.org recommends pairing scan monitoring with a clear remediation workflow so flagged issues move from detection to resolution without delay.
What Scans Cannot Tell You
Scans only flag approximately 25% of issues. They cannot evaluate whether a screen reader can navigate your checkout flow, whether your modal dialogs trap keyboard focus correctly, or whether your video content has accurate captions. These are evaluation tasks that require a human auditor.
A clean scan result does not mean WCAG conformance. It means the detectable subset of criteria did not surface issues on that scan. Organizations pursuing WCAG 2.2 AA or WCAG 2.1 AA conformance still need periodic manual audits to assess the full standard.
When to Schedule Your Next Audit
Recurring scans extend the life of your audit data, but they do not replace the need for a new evaluation. Plan your next audit after any major redesign, significant feature release, or platform migration. If none of those events occur, an annual audit is a reasonable cadence for most organizations.
Some procurement processes and EAA compliance timelines require an up-to-date ACR. If your organization maintains a VPAT, the underlying audit data needs to reflect your current product. Scan data alone is not sufficient for generating or updating an ACR.
Can I rely on scans instead of getting another audit?
No. Scans and audits serve different purposes. Scans monitor the roughly 25% of issues that automated tools can detect. A manual accessibility audit is the only way to determine WCAG conformance across all criteria. Scans are a monitoring layer, not a replacement.
What is the best scan frequency for an ecommerce site?
Ecommerce sites typically benefit from weekly scans. Product pages, checkout flows, and promotional content change frequently. Weekly scans catch regressions before they affect a large number of users. Pair scans with an audit at least once a year or after any major site update.
Do scan results count as documentation for ADA compliance?
Scan results can supplement your compliance documentation, but they do not stand on their own. An audit report and, where applicable, an ACR carry significantly more weight. Scan logs show ongoing monitoring effort, which can be useful as supporting evidence alongside a thorough evaluation.
Recurring scans are the bridge between audits. They keep your team aware of regressions, maintain momentum after remediation, and give you early warning when something changes. The schedule you set today determines how quickly you catch issues tomorrow.
Contact Accessible.org to discuss audit and scan monitoring services for your digital assets.
