What types of image files does CWIS support (GIF, JPEG, etc)?
For image metadata fields (and the custom logo upload) the types of image files that CWIS supports is dependent on your web server environment. If you are running on a Linux server and do not have the PHP “safe_mode” option turned on, then CWIS should support GIF, JPEG, and PNG files. If you are running on a non-Linux server or a server with PHP safe_mode turned on, then which image types are supported will depend on what version of PHP you have. For versions of PHP that include release 1.6 or earlier of the GD library, GIF is supported but not PNG. For most newer versions, PNG is supported but not GIF.