Fantastic add-on! Allows for easy addition of custom search engines to Firefox. Perfect for integrating services like Morphic. User-friendly, effective, and a real must-have for anyone looking to expand their search options. Works flawlessly and saves a lot of time. Great kudos to the developer Tom Schuster for this useful tool!

终于干掉CSDN啦

太好了，终于屏蔽掉垃圾的 CSDN !!

After the mycroft project stopped working, I was completely lost as to how I would add another custom engine. This extension worked like a charm!

Sehr nützlich!
Hiermit kann auch die defekte Amazon-Suche wieder hergestellt werden.

Extremadamente util.

I'd give this 5 stars, except the instructions to use it aren't at all clear.

How I got it to work (to add google.co.uk as a default to google.com) in Windows Firefox v 126.0 64bit:

1) add (ie, install) the extension
2) restart FireFox
3) Right-click search box. You'll then be given the option to add a custom search; click this, then enter the details. Finish.
4) go to firefox->settings->search and your new custom search engine should appear at the bottom of the "Default Search Engine" drop-down list. Choose it.
5) Voila!

I don't like running extensions when not in use, so I turned it off. When I restarted FireFox, my choice (google.co.uk) was still active.

Thanks @Tom Schuster