Convert sfw to psd Online: sfw2psd
You can use Tom's Editor to easily convert images from
Seattle File Works image .SFW to Adobe Photoshop
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Seattle File Works image is an image format with extension SFW.
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.