Q:

How do I force .png or .jpg images to be downloaded as png or jpg, instead of webp? (any browser, not just chrome)

When I have an image URL for a jpg or png image, for example:
https://static.coingecko.com/s/coingecko-logo-d13d6bcceddbb003f146b33c2f7e8193d72b93bb343d38e392897c3df3e78bdd.png
When I visit this link, it shows me the image. When I right click the image and 'Save Image As...' for some reason it insists on saving it as a .webp (Google WebP) image. 
It's not just a matter of renaming the extension, the file it downloads and saves is actually a webp image. 
No matter what I do, I cannot seem to get my browser to just save it in the native format I'm visiting, i.e. png or jpg (in this example, png). 
This happens in any browser: Chrome, Firefox, Brave, Chromium, et cetera.
Note that when I do curl <theurl> from the terminal, I am getting the correct image file.
And when I build a custom script to inspect the HTTP headers, it has the correct mimetype (image/jpeg or image/png). This makes me think that apparently, full browsers (not just some curl script) send some Accept header or something, that causes the particular webserver to output a webp image instead of the png or jpg, regardless of whether the URI specifically requests the png or jpg.
I'm sure there is some rational reason for this behaviour but I don't want it. Is there a way to fix this? 

A:

You would need to switch the browser's user agent setting. If the web server recognizes an older browser incapable of webp, it should give you png.

