Convert koa to psd Online: koa2psd

You can use Tom's Editor to easily convert images from
Koala Painter .KOA to Adobe Photoshop .PSD.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

KOA

Koala Painter is an image format with extension KOA.

PSD

PSD is in internal image format of Adobe Photoshop. It can store all the features offered by Photoshop, like layers and paths. Images can be compressed or not.