How big should the CE logo be?

The European Union requires the CE mark to be visible, legible and indelible. To ensure readability, the CE marking must be no smaller than 5mm (unless otherwise specified in relevant Directives or product requirements). It must consist of the initials “CE” and if the CE marking is enlarged or reduced, the proportions must remain unchanged. When it is not possible to affix the CE mark to the product itself, the CE marking must be affixed on the product packaging or the official accompanying documents.