It had a few small bugs, and the interface was not the most intuitive. But it worked pretty fine to me!

여러개 선택해서 별도 재생목록을 만들고 삭제하는데 편리함

It works well, but order is not respected when adding to a playlist from a file. Instead, videos are just ordered by publication date.

Multiselect for YouTube allowed me to backup and copy my writing playlist to another Gmail/YouTube account. I decided to do this after YouTube, out of nowhere, deleted my account due to a political video I had saved in my political playlist during the Biden and Trump campaigns of 2024. They said I violated YouTube terms by saving a YouTuber's video in my playlist. Apparently, this is something YouTube has done for a while, as I found multiple people online with the same complaints. I was able to get my YouTube account and playlists back in a few days. But to lose a 2000-video playlist of my favorite videos really showed me the need to have multiple accounts under different Gmails.

this implied that i could add every video in a playlist to my own playlist. it didn't lie to me. good job, unlike PocketTube

This extension still works flawlessly and fixes the playlist popup window that YouTube broke with their UI update.

Amazing thank you. Still works despite not being updated in over a year. Just grabbed over 200 videos from my watch later list and added them to a new playlist in one go.

Amazing add-on, automatically detects how many videos are in your playlist, can copy the entire playlist or save as a file locally, and import it onto another account instantly. Thanks so much saved me tons of time.

крутая и удобная приложенька

Works flawlessly

Unfortunately, dont' work on yotube history menu. Is there a way I can return back to the previous version. if Maybe it would work again.
And it is no longer possible to cut away from a playlist; I can only copy

Doesn't work for some reason

It's really nice but lags your browser like crazy when viewing a large playlist, even when it isn't being used