I am working on a file in Photoshop but I do not know which kind of format the file is. It is the first time I see 'application/vnd.adobe.photoshop' under File->File Info...->Descripton
The information on internet is not clear about it.
Graphic Design Stack Exchange is a question and answer site for Graphic Design professionals, students, and enthusiasts. It only takes a minute to sign up.Sign up to join this community
This is called a MIME type.
"application/vnd.adobe.photoshop" means the file is: an application; vendor is adobe; application name is photoshop.
Normally when I see "format" I think it is telling me that the file itself is of that type (which would mean your screencap is photoshop), but depending on the context, it may be telling me that what is listed is the required program to open or view the file, in which case your screencap is of an image file which Photoshop has announced to/registered with the OS as being the default viewer.
If it is not a PSD, it is likely a TIF, JPG, or PNG. You might try "open as".
(note that a PSD file would normally be 'image/vnd.adobe.photoshop')