New user ... can't find any way to ignore file specific extensions. Is it possible?
In Ribbon Mode with a folder comparison already started, click on ribbon tab Home on Set Compare Options (second icon from left).
In Toolbar/Menu Mode with a folder comparison already started, click in menu Session on Session properties.
In edit field Ignore folders/file types specify the file extensions of those files to ignore on folder comparison like *.bak;*.tmp;~*.*
Click on bottom left corner on button OK and Run.
It is also possible to specify a default Ignore folders/file types used for each new folder comparison.
In Ribbon Mode click on ribbon tab Home on Settings (top item on right side).
In Toolbar/Menu Mode click in menu Option on Configuration.
At Ignore Options - Folder/Folder Sync there is also Ignore folders/file types.