I've found XnView to be a good IrfanView replacement. (Granted it's not QUITE as good; same as how there isn't anything quite as good as Notepad++)
As for Lynx on Windows, looks like it's available through Scoop! https://bjansen.github.io/scoop-apps/main/lynx/
PC Engine. Not only does it look like a prop from the set of TNG, but it is delightfully tiny. The cartridges are little cards that you slot in the front. There is literally nothing bad about a PC Engine. (Except for maybe that it's only got one controller port)