QUOTE(dragontamer8740 @ Mar 13 2022, 13:59)

Figured out how to stop most servers from serving webp images to firefox (instead of jpeg/png).
about:config, set 'image.http.accept' to '*/*' (without quotes).
The default, when unset, effectively is 'image/webp,*/*'.
Thank you. I've changed mine now.
I hope that Firefox can continue to exist despite its market share continuing to dwindle. Once Firefox goes out of business, those other browsers depending on Firefox code will dwindle too as their non-hardcore users quit and move to the phone-home Chrome-based engine (Edge or Chrome proper).
Statcounter Global Stats
[
gs.statcounter.com]
https://gs.statcounter.com/browser-market-shareBrowser Market Share Worldwide - March 2022
Chrome 64.5%
Safari 18.8%
Edge 4.1%
Firefox 3.4%
Samsung Internet 2.8%
Opera 2.2%
Others 4.2%