nenufar

GREAT ! You made my day !

Thanks a million for standing by and coach me.

Nick

I want it transparent.

I added your suggestion : https://www.flickr.com/photos/186283452@N07/52799600379/in/dateposted-public/

No change.

Unfortunately it is not solved. It is white now after I fiddled with the color settings in the Artistry theme that I use. But there is no opacity slider. So the background is now white instead of black and still not transparent. I do not find a way to reduce the padding to zero as workaround. I have contacted the author of the theme but without reply until now.

Thanks for taking the effort to replay anyway !

Nick

Thanks a lot for the extended and comprehensive answer.
I do not know if the corrupted file belongs to the theme. How can I find it out ?
The theme is indeed the Port Folio gallery. The supplier (El Dorado) does not support this theme any more. Our version is from 2018 and does not support php 8.x.x. So I wanted to change the theme anyway because I cannot modify some parts of the theme anymore (for instance the header and the footer).

Any recommendation of a theme is welcome. I was thinking of the WordPress twenty twenty seven theme for instance.
If I just switch to this theme will this generate a new init.php and solve the problem ? I will then have to take our site off line for a while because our provider (one.com) does not accept a file with malware to setup a staging site. The original idea was to stage the site and then switch theme.

Nick

I found a solution with the Photonic plugin.
I did exactly what this tutorial suggests.

I found a solution with the Photonic plugin.
I did exactly what this tutorial suggests.

Thanks for the tip. I copied the question to the forum of Flickr Gallery plugin as you proposed.