Convert tga to raw Online: tga2raw
You can use Tom's Editor to easily convert images from
Targa .TGA to RAW Dump
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Targa is an image format with extension TGA.
This is just raw pixels saved in a file. Format used mostly by old games. RAW files do not have any header so if you don't know what is the original width and height of the image it might be hard to decode them.