Since TSF 2023.1 we have an Icon Repository, with the following supported file types:
A change in the Icon repository is that we have limited the allowed extensions. First, every extension could be used for an icon. Now, it has been limited to .gif, .jpeg, .jpg, .png, .bmp, and .svg.
This week I had an issue with the Universal GUI that some of my Icons weren’t showing up. The request gave an 403 error but no idea why.
It turned out to be that the icons had an ICO-file type. Works perfectly in Windows, but clearly not in Universal.
It would be nice if is impossible in the SF to upload Icons with a ‘forbidden’ file type (extension whitelist??) or at least that the Validation will give an error or a warning.