Use Go2Convert to open PSD files. Go2Convert is yet another free image converter tool which can be used to convert your PSD file into a viewable format like JPEG. In order to do so, ...

How to Convert a TIFF to PSD. TIFF image files are also called TIFs. They are larger than GIFs or JPEGs, and thus aren't optimal for Internet use; they're better suited for use in documents.