How to install your own extension in Firefox browser .
,SelectInstallAdd-onfromfile...fromthemenu,thenfindandselectthefile.Someextensionsplaceabuttoninthetoolbarafterinstallation.Youcan ...,2020年6月6日—...files)andrenameitto.xpi,andthenchooseInstallAdd-onfromfileandselectmy.xpi,itsays:Theadd-ondownl...。參考影片的文章的如下: