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Website accessibility certification
Website Accessibility Certification

Website accessibility certification

Website accessibility certification


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Internet for everyone: a global challenge, a legal demand, a commitment by everyone

Accessibility allows access to the website and its contents regardless of the type of hardware, software, network infrastructure, language, geographical location and skills of the users. It covers the majority of disabilities that people can have (physical, visual, auditory and cognitive), and also the needs of the elderly. Thus, it is a basic element for equal opportunities and to avoid discrimination.

Developing an accessible website has other additional benefits, such as making it more user-friendly and improving positioning in search engines, the reuse of content and interoperability, reducing the server load and the band width required, etc.

The AENOR N Mark for ICT Accessibility is a guarantee for organisations, users and web managers to ensure that their webpages are accessible and stay that way.

Some of its characteristics are:

  • It allows the certification of AA and AAA accessibility levels, for the standard UNE 139803 Requirements for the accessibility of web content and the accessibility guidelines of the WAI (Website Accessibility Initiative).
  • It reflects compliance with the accessibility level required by legislation (AA level).
  • It is applicable to any type of content, particularly to Web content which is accessed via user applications.
  • The certification includes the implementation of a technical accessibility test, the review of the plan of action to correct any problems identified and the checking of corrections made. In addition, there will also be a revision of the back office or accessibility management system.
  • It involves performing biannual checks of the level of compliance with the accessibility requirements and a review of implemented corrections.
  • This includes annual audits of the methodology for maintenance, or accessibility management system, in accordance with the requirements established by AENOR in Regulation RP A90.01.
  • It organises and combines the commitments, knowledge and experience of AENOR, Foundation CTIC and ESI with respect to web accessibility.

This certification is aimed at owners and/or people responsible for the maintenance of website accessibility and grants the right to identify the website using the AENOR N Mark for Accessibility.

The UNE 139803 Standard is of a general nature and is applicable to any website, although Spanish legislation establishes that the following organisations comply with it:

  • Public Administrations.
  • Entities and companies that manage public services, especially those of an educational or healthcare nature, and community services.
  • Any website that has public financing.
  • Businesses that provide electronic communication services, financial services, water, gas or electricity supply, travel agencies, passenger transport, retail trade activities.

The auditing of the accessibility management system may be in parallel with auditing. ISO ​​9001.

  • AENOR ICT Accessibility Certificate.
  • The license for use of the AENOR Mark for ICT Accessibility, by which the certified website is identified.
AENOR Mark for ICT Accessibility

AENOR Mark for ICT Accessibility​


AENOR has issued 40 website accessibility certificates, including the certification of the websites of Public Administrations and public entities, financial institutions, web developers, multinationals, etc.