[layer8]

Chrome can do the same via search engine shortcuts. This actually should be considered a basic browser feature, and as far as I can tell virtually every desktop browser since IE3 in 1996 does have it built in, it’s just not very well known.

[polynomial]

Not sure why you're being downvoted. Such shortcuts (aka Site Search in Chrome) are a longstanding feature in Chrome, and it's unclear why you might need or want to do with a browser plugin instead.