PNG files get saved as a JPG.

[noirscape]

All png files I download are saved with a .jpg extension. I have to run http://askubuntu.com/a/631914/376812 to fix the filetype.

[rachmadaniHaryono]

hi, i make simple fix for this, but it still have some limitation. this only apply to imgur link especially png image with jpg file extension. this may cause effect with resume function.

can you check it if it meet your needs?

[roperi]

@rachmadaniHaryono, @ev1l0rd

This is a big problem for me as most of my target images are imgur based and I am missing more than 70% of them.

This is what happens (this is just an example though):

Attempting to download URL[http://imgur.com/qDZAdas.jpg] as [1231jb.jpg].
Sucessfully downloaded URL [http://imgur.com/qDZAda.jpg] as [1231jb.jpg].

It seems everything is ok, right? Nope. The downloaded file is actually corrupted and it can't be read. It seems when an user uploads a large PNG to the imgur server it gets converted into a JPG image (see here).

Now if you go directly from your browser to an image URL (again, this is an example):

http://imgur.com/qDZAdas.jpg

...and right click on it and save it to your hard drive image would be saved as a PNG one. Actually, if you right click and check image properties it will show you is a PNG image type.

So one would think that if I rename the extention of my downloaded JPG to PNG it would be back to normal. Nope. Renaming doesn't changes anything.

What do you guys think? Is there a way to dynamically rename image based on its real image type?