I've tried most alternatives for Windows, and the best I've found is Nomacs[1]. It's very fast and customizable. 1.) https://nomacs.org https://nomacs.org nom

I've tried most alternatives for Windows, and the best I've found is Nomacs[1]. It's very fast and customizable. 1.) https://nomacs.org https://nomacs.org nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images.