Emil Ranzenhofer was perhaps best known as an etcher. His subject matter was quite varied from Vienna city scenes (the Museum of the City Vienna has several of these etchings in their collection), interior of synagogues, buildings, portraits, street scenes in the Tyrol, Bosnia, Herzegovina, Montenegro, to flowers and country landscapes.
Although not known for his oil paintings, Emil Ranzenhofer did produce a number of them including a self-portrait. Many were landscapes of the rural areas around Vienna and seascapes (probably the Adriatic Sea). Several of his oil paintings show the spire of Vienna’s St. Stephen’s Cathedral in the distance.