Why can’t I upload painting files to the internet or open it in other programs?
If you wish to upload an ArtRage painting to Facebook, DeviantART, Flickr, or any other website, or open it with other programs like Photoshop, Gimp or MSPaint, then you need to export your painting.
ArtRage uses the proprietary PTG format. This cannot be read by any other program. To create a JPEG, PSD, BMP, TIFF, GIF or PNG file, you need to go to:
File > Export As Image
If you are using an iPad, see: How to share paintings from the iPad
Why Does ArtRage Do This?
ArtRage does not give you the option to save in different formats because the ArtRage PTG file is the only one capable of saving all of the media information for your painting. If you were to accidentally “save” your painting as a JPEG (for example), then you would lose layers, transparency, paint wetness, paint thickness, lighting direction, and canvas texture, as well as any attached References, Tracing Images, Color Samples or other ArtRage specific features.
However, because you still need to use your paintings in other programs, it gives you a choice of formats to use to export a copy of your painting.