Convert vst to pnm Online: vst2pnm

You can use Tom's Editor to easily convert images from
Vista .VST to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

VST

Vista is an image format with extension VST.

PNM

PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.