4.
Text with EEA relevance.
The Commission shall ensure that the common user interface complies with the following quality requirements: it is easy to use; it is accessible online through various electronic devices; it is developed and optimised for different web browsers; it meets the following web accessibility requirements: perceivability, operability, understandability and robustness.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.