Platzer was born in Eppan in the County of Tyrol, and came from a family of painters. He painted primarily historical and mythical scenes. The Joanneum Alte Galerie in Graz houses the largest collection of Platzer's work under a single roof. Platzer worked with his uncle as a court painter in Passau. He returned to Eppan where he continued to work until his death in 1761.^[1]

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  Fountain scene in front of a palace, 1730s.
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  Dancing scene with palace interior, 1730s.
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  Allegory of the Four Seasons, 1750.

• List of Orientalist artists

• Bénézit, Emmanuel (2006) [first published in French in 1911–1923]. Benezit Dictionary of Artists. Vol. 11. Paris: Gründ. pp. 100–101. ISBN 2-7000-3081-8 – via the Internet Archive.
• Herrmann–Fichtenau, Elisabeth (1996). "Platzer [Plazer], Johann Georg". In Turner, Jane (ed.). The Dictionary of Art. Vol. 25. New York: Grove's Dictionaries. p. 34. ISBN 1-884446-00-0 – via the Internet Archive.
• Vollmer, Hans, ed. (1933). "Platzer (Plazer), Johann Georg". Allgemeines Lexikon der bildenden Künstler (in German). Vol. 27. Leipzig: E. A. Seemann. pp. 145–146.