Renaming it png won't turn it into a png. Be honest did you rip this from imgur on a mobile browser?
I ripped them from the app itself and I mean extracted them. No photo editor or anything like that.
Here's the whole process I've done
1. Using Nox Emulator, Install the app and download its assets. 2. Access the files from 7zip and extract the .png files to the desktop. 3. Upload the .png files here.
I have never seen Firefox do this before so I doubt it. I would recheck the images through Adobe or something similar
Never mind. I found out the problem. It was the emulator. I datamine using the emulator and the images extracted are smaller. I don't know why it's uploaded as webp, when the images are png but it explains the smaller filesize.