Dear @firefox : Please stop saving images as webp when I drag them out of the browser. Forever stop that. Even if they are webp originally, just give me a setting to auto-convert them to JPEG. When I get a webp file the first thing I have to do is convert it manually if I’m going to do *anything* with it.
It should be spelt “losslessness”. “lossless” is an adjective and when you add “-ness” to an adjective it becomes a noun.
After turning the word into a noun though, you’ll need to know how to turn it back into an adjective. We use “-less” to turn the noun into an adjective.