uBlock Origin was first developed as a Chromium extension, so converting to WebExtensions API is a non-issue. There is currently a dev build for the WebExtensio

uBlock Origin was first developed as a Chromium extension, so converting to WebExtensions API is a non-issue. There is currently a dev build for the WebExtension version of uBlock Origin in the latest release.[1] FYI, uBlock is abandonware[2]. [1] https://github.com/gorhill/uBlock/releases https://github.com/gorhill/uBlock/releases (search for "webext") [2] https://github.com/chrisaljoudi/uBlock/releases https://github.com/chrisaljoudi/uBlock/releases ("released this on 31 May 2015")