Need a Replacement Firefox Addon: Check Out Our Guide Here. - Digital.com
From Firefox 57, you'll need to replace dead Firefox add-ons with WebExtensions. Here are some drop-in replacements for your favorites.
5 Jul 2020 ... From Firefox 57, you'll need to replace dead Firefox add-ons with WebExtensions . ... are using Video DownloadHelper to improve the download speed of ... and the following Facebook-related WebExtensions are ready to go:.