Hello,

I had a problem with black backgrounds appearing on png images. After looking into the images.php class, I found a solution which worked for me.

I added these two lines at line 385:

imagesavealpha($resampled, true);
imagealphablending($resampled, false);

(after the line: $resampled = imagecreatetruecolor($w, $h)

There might be a better solution, but this works for me.

Kind regards,

Misha

Thanks for sharing your solution Micha (@blue-canoe)!

I think you are right with your solution as from memory, no specific provisions had been made for alpha transparency. These were images that contained transparency, right?

Thanks again,

Gez

Yes, those were transparent images (png).

There where some provisions made for alpha transparency, but only when the image is first created. Later on a new instances was created (to create the border etc if necessary) and there it was not done.

Hi Misha,

Karma +1 For sharing your fix!

Thanks again,

Gez

There might be a better solution, but this works for me.

Why are you saying this ?
It looks great !

Karma +1
It is a very nice fix because I recognize to had many problems with png. In com_media as well (The one I partially inspirated)

FIXED with your tip.