GifsOnTumblr
Damien Erambert
Since Wallbase is dead and being replaced by Wallhaven, the extension has made the change For those interested, the source code of the extension is available on GitHub :) https://github.com/eramdam/WallbaseDirectDownloader *** CHANGELOG *** Check the changelog here => https://github.com/eramdam/WallbaseDirectDownloader/releases
