Quote from: _BlackStar on Today at 08:48:51 AM

Maybe you're right, but in this case I think the problem is different. Do you know what size the BestChange avatar file I'm using is? It's only 16kb, but if I host the image using imgbb then the image is invalid ^{[proxi invalid image].} So the problem is not all about the image size, but the problem is with the image hosting site imgbb which may not work well in furum now. But when I use imgur and postimage, the images are hosting well because so far both sites are working fine.

All the images you have posted are showing/working just fine as I have seen right now. You are right that the issue is not all about the size of the image alone but with imgbb too. I did try to open the link from ImgBB and copy the link that ends in .png but the image still show "Proxy: Invalid Image". The results can be found below that it doesn't work if the links that are used are like this https://ibb.co/z8QQL4z (ImgBB), https://imgur.com/a/xweNMDO (Imgur).

Results:
Without Image Format:

Imgur

ImgBB

Ends With Image Format: .jpeg, .jpg, .gif, .

Imgur

ImgBB