For whatever reason, the official add-on by The Internet Archive gave me too many false positives with sites that were actually being loaded just fine. Having a right-click menu is also great: it gives me more manual control, and it doesn't make me move the mouse to the already cluttered top-right corner where I have to hunt for the right button.

It works by simply opening a new tab with the result page for the search query on that you otherwise would have typed in manually>This simple solution avoids loading the font page of Archive.org when I'm only interested in a specific website, which loads much faster for me and saves bandwidth for them. Win-win! Plus, it leaves the original tab unaffected, which I like.

Making it trivial to check a domain on whois is just a welcome bonus feature at this point.

Thanks for a great add-on!