Accessibility audits for agencies
A paired change-detection and WCAG-scanning workflow purpose-built for teams whose day job is keeping clients compliant. Attest a baseline, watch the site, re-test what actually changed, bill what you remediate.
The problems this solves
Every client deploy threatens your last audit
You sign off on WCAG conformance Friday. Client ships a theme tweak Monday. Your attestation is now a liability. You don't know about it until the client's user files a complaint.
Re-audits aren't billable if you can't scope them
"Please re-audit everything" is hard to quote. "These 3 pages regressed since our baseline, here's the delta" is a clean statement of work.
Handoff to the client's dev team is fuzzy
Screenshots of axe runs in a Slack thread. CSV exports. A PDF emailed last quarter. None of it is a permalink your contact can forward to engineering.
The five-step workflow
This is how agencies using OnChange run their ongoing accessibility engagements.
- 01
Point OnChange at their critical pages
Homepage, account signup, checkout, key marketing flows. OnChange watches them for text + visual change already. Now you get WCAG on top.
- 02
After remediation, attest the baseline
When the client has signed off on the remediated state, mark that scan as the attested baseline. That's your VPAT snapshot.
- 03
Let change detection drive the rescans
When OnChange detects a text or visual change on a watched page, trigger a re-scan. The diff against the attested baseline shows exactly what regressed.
- 04
Send the delta report to the client
Every scan has a branded, print-ready report at /audit/:id. Share the URL. The client sees the new violations, WCAG criteria, and an AI-generated summary.
- 05
Invoice for the remediation work
Attested baseline plus rescan delta is a scope document. "Fix these 4 new AA failures" is a clean statement of work the client's engineering team can execute against.
What changes for your agency
- Retainer clients get continuous conformance instead of annual audits
- Scope discussions shift from "what broke?" to "here's what broke, and here's what it costs"
- VPAT attestations stay meaningful between formal audit cycles
- Your team re-tests only the pages that actually need it
- Engineering handoff is a permalink, not an email chain
- Change history in OnChange doubles as your audit paper trail
Related
Make accessibility a retainer, not a project
The agencies winning long-term a11y work sell continuous conformance. OnChange is how you deliver it.