Convert ppm to psd Online: ppm2psd

You can use Tom's Editor to easily convert images from
Portable aNy Map .PPM to Adobe Photoshop .PSD.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

PPM

Portable aNy Map is an image format with extension PPM.

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.