Jim Schindler was the McDonald's designer who turned the arches into an “M” logo in the 1960s.
The original Golden Arches were two separate architectural structures on McDonald's restaurant buildings. As the company expanded, the arches acquired a second role as a corporate identifier. Schindler combined their visual forms into the recognizable golden “M,” preserving the connection with the buildings while creating a mark that could work on signs, packaging, and advertising.
The logo became part of a broader modernization of McDonald's visual identity during the 1960s. Its simplicity made it legible at many sizes and helped customers recognize restaurants in different locations. The arches therefore moved from architecture into a flexible international brand system.
Stanley Clark Meston is associated with designing the original building arches, not with the later logo conversion. Keeping those two contributions separate resolves one of the most common attribution mix-ups in McDonald's branding history.