「素晴らしい、感謝しきれない。」
ただ以下のバックアップの読み込み方法は不明。
--
バックアップを保存する
ブラウザの起動時にセッションのバックアップファイルを作成し，ダウンロードフォルダに保存します。

As one of the early adopters, I have been using this add-on from the time Quantum disabled "Sessions Manager". Over a year, this add-on has come close to the functionality of the "sessions manager" add-on by Michael Kraft. I must commend the dev, sienori on his relentless efforts through regular updates in helping the Firefox community. Kudos to the work! The only grouse I have though is that sometimes, I get the IndexDB erroe which surprisingly, automatically resolves itself in a few days. Can't blame for it. Have a good one dev! Cheers.

Frequent updates & nice, clean interface. Haven't had any problems.

Makes functions more accessible!

сделайте возможность, чтобы в пользовательские сессии можно было добавлять отдельные вкладки
make it possible to add individual tabs to existing user sessions

Hi, this Addon is very useful, but can you please fix the display of the "favicon"? if my session is restored, all tab-icons are missing. They'll refresh when i click on tab, but i want them always. Thank you!!

O melhor. Muito completo.