Windows Explorer hides a lot of files by default from the user.
However for control and knowledge you should really see these files.
Seeing the extension of a file and whether it is a jpeg , tiff , docx or doc etc is needed by the computer user.
Open Windows Explorer
Go to tools , folder options
Select the View tab, and under Hidden Files and Folders, select Show hidden files and folders.
Beneath this, deselect “Hide extensions for known file types”. This means you should now be able to see whether a file is a .JPG or a .PNG for example.
You can optionally deselect “Hide protected operating system files” (Recommended) under this, however most people won’t need this, and unless you really want to see a Desktop.ini file in every folder, it’s best to just leave it off.