[zaque1213]

Recently on my phone I tried to copy and paste a picture from Facebook to my messaging app. Instead of copying the picture, it copied a text message that read "picture of dog and three people." I'm sure this is nothing new, but I'd never seen it before and thought it was interesting.

[hatsunearu]

This reminds me, (very unrelated) a few years ago (almost 10), when I dragged and dropped an image from Wikipedia with Google Chrome to my Windows XP desktop, and to my surprise it actually saved it with a file name that is the description of the picture, not some arbitrarily chosen name or the Wikipedia file name. Sometimes it was really long and descriptive, like "A man wearing red and a woman wearing blue are playing soccer on a field blah blah blah".

I wondered where that came from, and I looked for that description on that image's page on Wikipedia and couldn't find the same description anywhere (keep in mind, I was a middle schooler or something and it could very well be the case that I overlooked something) I was a little spooked, and I thought it was some sort of hidden feature in Chrome that labeled images like that.

Does anyone know what was happening? It still bugs me to this day :P

[Kronopath]

Could it have been the alt text for the image? I believe the grandparent comment was also pasting the alt text, since Facebook auto-generates alt text for blind users using ML (this is mentioned in the article).

[TeMPOraL]

AFAIR you can suggest a name for the file in response headers of HTTP request, so I'd suggest cURLing the image and looking at the response headers.