Born in Zürich on 9 October, 1927, he began his training photography with Theo Vornow in 1944, then continued his photographic studies at the Arts & Crafts College in Zürich, before beginning an apprenticeship as cameraman for documentary films in 1946.
As of 1949, he was a photo reporter for various Swiss and international magazines. His first non-commissioned series Magie der Schiene was produced in 1949 by his own Turnus Publishing. He left photo journalism at the beginning of the fifties and began to build up a very successful career as an industrial and commercial photographer, supported by his wife Rita (1923–2013). Groebli’s experiments with colour photography in both free, artistic works, as well as in applied areas, are sensational and enjoy international acclaim. He withdrew from commercial photography at the end of the seventies.