Is it possible to change an image appearing in multiple articles just by replacing the original via FTP, like in the Joomla core? Or do our customers have to change the image in every single article because of the image handling in K2?

Is there a way to prevent K2 from creating own copys of all article images and always use the same image source?

Hello Magnus,

The only way to ensure this is to use an extrafield as an alternative to K2's image function.