Include filename in web gallery for mobile when displaying individual image

When you create a web gallery of images, on the desktop, when you zoom in on an image, it shows the filename in the lower left. On mobile, if you tap an image, it just takes you to that image, and the only way to figure out the filename is to find it in the URL, which isn't very user-friendly.

It'd be nice if the mobile version displayed the filename some place where it could easily be copied by the viewer. If a customer wants a copy of a specific image, the filename is how they communicate that to the photographer, so making it hard to find on the zoomed page in mobile really has an impact.

I end up getting screenshots a lot of the time from mobile-only people, which means I have to talk them through finding the filename, or I have to match their screenshot to an image from a gallery that probably has hundreds of images, often with many being very similar.