@@ -538,7 +538,7 @@ convertWithOpts opts = do
538538type Transform = Pandoc -> Pandoc
539539
540540isTextFormat :: String -> Bool
541−isTextFormat s = s `notElem` ["odt","docx","epub2","epub3","epub"]
541+isTextFormat s = s `notElem` ["odt","docx","epub2","epub3","epub","pptx"]
542542
543543externalFilter :: MonadIO m
544544 => ReaderOptions -> FilePath -> [String] -> Pandoc -> m Pandoc