[trblock]

I don't think there is a web search for that (would be an awesome project), but I do know this list: https://github.com/mdibaiee/awesome-lite-websites

Has like 40 popular sites that have lite versions.

[qarx]

Yea, it'd be a great project, but I also had hopes for an existing search engine have flags you can set for these requirements

I had to laugh when I found hacker news on that list. While the site itself belongs there, it's filled with links to external places who don't belong there ^^