Ranked in these QuestionsQuestion Ranking
Pro Very low requirements
A 486 with 16 mb of ram, or a core i9 with 128GB.
Pro Some video and audio support
Can be used as an extremely limited lightweight audio and video tester. Avi, mov, qt, rm/rmv, wav, wma, aac, mpeg 1/2.
Pro Supports all multi-decade formats
Gif, jpeg/jpg, jp2, png, svg, raw, aai, gavi (animated gif), and can load most zip files to show image contents without disk-based extraction.
Lightweight, loads fast. Loads images faster.
Modern formats like jbig and high-efficiency image are not supported.