Most websites should be scanned for accessibility at least once per month. Sites that publish or update content weekly should scan weekly. Ecommerce stores, news sites, and any property with frequent code deployments benefit from daily or continuous scanning. The right cadence comes down to how often the site changes and how much risk the team is willing to carry between checks. Scans detect approximately 25% of accessibility issues, so they support an ongoing program but never replace a (manual) audit for conformance.
| Site Type | Suggested Scan Frequency |
|---|---|
| Static informational site | Monthly |
| Marketing site with regular updates | Weekly |
| Ecommerce store | Weekly or daily |
| News, blog, or content-heavy site | Daily |
| SaaS web app | Continuous or per deploy |
| Post-remediation validation | Immediately after fixes ship |
What a Scan Actually Does
An accessibility scan is an automated check that crawls pages and flags coding patterns associated with WCAG issues. It catches things like missing alt attributes, empty links, low contrast pairs, and form fields without labels.
Scans cannot evaluate context, meaning, or user experience. They flag what they can detect through code patterns. That is approximately 25% of accessibility issues. The remaining issues require human evaluation through a (manual) audit.
This is why scan cadence matters for ongoing monitoring, not for conformance certification. A clean scan does not mean a site meets WCAG 2.1 AA. It means the automated layer of issues has been addressed.
How Often Should You Scan a Website Based on Update Frequency?
The right scan cadence tracks how often the site changes. A site that ships new code every day and a site that updates twice a year have different risk profiles.
Static informational sites can be scanned monthly. There is little code or content turnover, so weekly scanning produces minimal new signal.
Sites with regular marketing updates, new landing pages, or blog content should scan weekly. New content introduces new accessibility issues, and weekly scans catch them before they accumulate.
Ecommerce stores, especially on Shopify or WooCommerce, benefit from daily or weekly scans because product pages, promotional banners, and theme updates can introduce issues fast. Web apps with continuous deployment should integrate scanning into the deploy pipeline so every release is checked.
Why Monthly is the Floor for Most Sites
Monthly scans are the minimum for any active website. Anything less leaves too much time for issues to compound, get indexed, and reach users before anyone notices.
A month is also the rhythm most teams can sustain. Quarterly scans tend to produce overwhelming reports because so much has changed between checks. Monthly keeps the volume manageable and the remediation work steady.
For organizations tracking ADA Title II or EAA timelines, monthly scans give leadership a regular data point to review without creating noise.
When to Scan More Often Than Monthly
Several conditions push scan frequency higher.
If code ships weekly or daily, scans should match. News sites, blogs, and stores with new SKUs benefit from daily checks. After fixes ship, scan immediately to confirm changes did not introduce new issues. Theme changes, plugin updates, and third-party scripts can quietly introduce problems. Sites that have received a demand letter or operate in a high-risk industry should scan more aggressively.
Continuous scanning, where every page load or every deploy triggers a check, is the strongest cadence for SaaS and web apps. It catches regressions the moment they enter production.
Pairing Scans with a (manual) Audit
Scans run constantly. Audits run on a schedule. The two work together but address different layers.
A (manual) audit by a qualified auditor identifies the full picture of WCAG conformance, including the issues scans cannot detect. Most organizations conduct an audit annually, or after a major redesign or platform migration.
Between audits, scans monitor for regressions and surface new issues introduced by content and code changes. The audit sets the baseline. Scans keep watch.
Accessibility Tracker Platform pairs both, so audit findings and scan data live in the same project, with prioritization and tracking built in. Accessibility Tracker is designed for teams that want a clear picture of ongoing accessibility status without juggling separate tools.
How to Choose a Scan Cadence That Sticks
The best cadence is one the team will actually maintain. A daily scan that nobody reviews is less useful than a monthly scan that gets attention every time.
Start with monthly. Move to weekly if content or code is changing fast. Move to daily or continuous if the site is high-traffic, high-risk, or in active remediation. Adjust as the project matures.
Document the cadence in the accessibility policy so it survives team turnover and platform changes.
FAQ
How often should an ecommerce site scan for accessibility?
Weekly at minimum, with daily scans recommended for stores that add products, run promotions, or update themes frequently. Ecommerce sites face higher legal risk under ADA Title III, which makes regular monitoring a practical part of the program.
Do scans replace an accessibility audit?
No. Scans detect approximately 25% of accessibility issues. A (manual) audit is the only way to determine WCAG conformance. Scans monitor between audits but do not produce a conformance assessment.
Should scans run automatically or manually?
Automatic scans on a set schedule are more reliable than manual triggers. Most teams configure weekly or daily scans inside their accessibility platform and review the output during a regular cadence.
What should I do with scan results?
Triage the flagged issues, prioritize using a Risk Factor or User Impact prioritization formula, and assign remediation work. Track each issue through to validation. Scan reports are most valuable when they feed directly into a project tracking workflow.
Can scans confirm ADA compliance?
No. Scans cannot confirm ADA compliance or WCAG conformance. They detect a portion of issues and support ongoing monitoring. Conformance requires a (manual) audit by a qualified auditor.
Scan cadence is one of the smallest decisions in an accessibility program and one of the easiest to get right. Pick a frequency that matches how the site changes, pair it with a real audit, and keep the data in one place where the team can act on it.
Want to see scan and audit data side by side in one project? Contact the Accessibility Tracker team to walk through the platform.