The recommended resolution is 600 x 900 pixels for the artwork, and you can use both PNG and JPG file types. And that's how easy it is to add custom artwork to the games in your Steam library.

FSR stands for FidelityFX Super Resolution, a technology by AMD, the company that makes the Steam Deck’s system-on-chip. Much like NVIDIA’s DLSS, it’s a form of custom upscaling that lets ...