file-convert (npm): The package export ppt, pptx, odp and key files to pdf and/or img(png, jpg, jpeg and etc...).
Keywords: libreoffice file convert to pdf or/and image|ppt to pdf|pptx to pdf|keynote to pdf|odp to image|ppt to image|pptx to image|keynote to image|pdf to image|imagemagick|ghostscript|libreoffice