XnView MP stands for Multi Platform = it is available for Windows, Linux and MacOS. It is a continuation of the older XnView Classic. In my opinion it is a great alternative to Windows photos app or any Linux image viewer that comes preinstalled. I even think it is an alternative to IrfanView. It is really fast and simple to use, supports more than 500 image formats, has built in folder browser, image converter, editor... AND MORE!
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Artius - AI Generated Headshots - Create Professional Quality Corporate Headshots with AI
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
BetterPic.io - Turn casual photos into stunning professional headshots with BetterPic's AI. Enhance your online presence for business individuals and teams with AI-generated portraits and impressive profile pictures.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
Hyper Headshots - Hyper Headshots is a cloud-based web app that allows you to convert photos into beautiful and professional headshots with ease.