Qwant search engine adder 作者： Max1Truc

It adds the qwant search engine to firefox without any popup. It is only compatible with Firefox 55 or greater. Source code : <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f80b928d1a0f9c1866143dcf45f39c81220a5e5427d1e049fe54035018f1765d/https%3A//goo.gl/B7wqkA">https://goo.gl/B7wqkA</a>