Heye & Partner created the McDonald’s “I’m lovin’ it” campaign associated with its lowercase visual style.
The German agency Heye & Partner developed the campaign that McDonald’s adopted for a global launch in 2003. The phrase was intentionally casual and conversational, and its lowercase presentation helped distinguish the campaign from more formal corporate slogans.
The campaign was built for international use, with local markets adapting executions while retaining the central phrase and musical identity. That global structure helped McDonald’s present a consistent brand message without requiring every advertisement to be identical.
The campaign’s music is sometimes treated as the entire brand identity, but the words and the audio signature are separate elements. Justin Timberlake’s recorded vocal performance became associated with the launch, while the slogan itself remained the central verbal brand line.