Can one make Eye of Gnome detect file type rather than use suffix?

[Ralf Mardorf]

On Wed, 10 Jul 2019 22:35:27 +0100, Chris Green wrote:
>On Wed, Jul 10, 2019 at 11:21:17PM +0200, Ralf Mardorf via
>ubuntu-users wrote:
>> Try different viewers.
>>   
>Yes, thanks, that's what I'm after of course.
>
>
>> My reply to the Xfce mailing list didn't come through yet:
>> 
>> Begin forwarded message:
>> 
>> Date: Wed, 10 Jul 2019 23:06:20 +0200
>> From: Ralf Mardorf
>> To: xfce at xfce.org
>> Subject: Re: Default viewer for JPEG files doesn't print - is there
>> one that does?
>> 
>> 
>> Some viewers that provide printing
>> 
>> kuickshow
>> geeqie
>> eom
>> gwenview
>>   
>OK, thanks, I'm currently trying nomacs which is OK but really
>overkill.
>
>> not to mention that almost all web browser could be used as an image
>> viewer providing printing.
>>   
>That would be rather heavyweight too for just printing an image when
>in my mail program.

FWIW different viewers have different approaches regarding orientation.
A viewer that might satisfy your needs at first glance, might be a
PITA, as soon as you want to view pics taken with a smart phone or
tablet. Viewing a pic on the monitor by correct orientation might
require rotation of the pic.