Convert sif to psd Online: sif2psd
You can use Tom's Editor to easily convert images from
Super-IRG Font .SIF to Adobe Photoshop
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Super-IRG Font is an image format with extension SIF.
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.