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EN 301 549 on Joomla: complete compliance checklist

Implementing EN 301 549 compliance on Joomla means addressing the platform's specific failure modes (older third-party templates, extension ecosystem inconsistency) while applying EN 301 549 — Accessibility requirements for ICT products and services success criteria across content, code, and editorial workflow.

Arjun Walia · IAAP CPACC · Media accessibility specialist3 min readPublished · Updated

EN 301 549 in 60 seconds

EN 301 549 is the harmonised European standard for digital accessibility, maintained jointly by ETSI, CEN, and CENELEC, that incorporates WCAG 2.1 AA for web and mobile content and adds requirements for hardware, software, documentation and support — and is the technical reference for both the European Accessibility Act and the Web Accessibility Directive.

Joomla accessibility — what you are starting with

Joomla has improved accessibility significantly since version 4. The default Cassiopeia template targets WCAG 2.1 AA. Smaller ecosystem means fewer accessibility-ready extensions.

EN 301 549 setup checklist for Joomla

1. Use Joomla 4+ and Cassiopeia: The most accessible reference template.

2. Audit extensions individually: Each extension brings its own template.

Common EN 301 549 failures on Joomla

• Older third-party templates

• Extension ecosystem inconsistency

• Inaccessible component overrides

Putting it together

Combine EN 301 549's Level AA requirements with Joomla's native tooling. Bake accessibility into your component library and editorial workflow; instrument axe-core in CI for regression.

FAQ

Frequently asked questions

Cited answers. Sourced. Updated as standards and case law change.

  • Is Joomla EN 301 549-compliant out of the box?

    Joomla 4+ core matches WordPress core in accessibility. Joomla's smaller extension ecosystem makes the ecosystem-level risk lower in some dimensions and higher in others.

  • What is the easiest path to EN 301 549 compliance on Joomla?

    Start with the platform's most-accessible default theme (where applicable), audit each installed plugin/extension/module, train content authors on alt text and heading hierarchy, and instrument axe-core in your CI pipeline.

  • Is Joomla as accessible as WordPress?

    Joomla 4+ core matches WordPress core in accessibility. Joomla's smaller extension ecosystem makes the ecosystem-level risk lower in some dimensions and higher in others.

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