Convert cpt to psd Online: cpt2psd
You can use Tom's Editor to easily convert images from
Canvas (compressed) .CPT to Adobe Photoshop
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Canvas (compressed) is an image format with extension CPT.
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.