In November 1945, Weixler gave a written testimony and his documentary photos of the executions of Kondomari to the Nuremberg War Crimes trial court. In his home town of Krailling, he was one of the founding members of the local Union CSU. He died on 23 April 1971, in Bad Reichenhall. The German Historical Museum in Berlin holds around a thousand photos by Weixler, which show the entire spectrum of his work.