Pix is described as 'An image viewer and browser utility - primarily for Linux Mint.
Pix is part of the X-Apps project, which aims at producing cross-distribution and cross-desktop software' and is a Photo Manager in the photos & graphics category. There are more than 50 alternatives to Pix for a variety of platforms, including Windows, Mac, Linux, Flathub and iPhone apps. The best Pix alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or Ente Photos. Other great apps like Pix are nomacs, ImageGlass, digiKam and XnView Classic.