Installed the extention, it worked for a first 3 times then extention's blue button near a notification bell disappeared to never be seen again when I was in the middle of rearranging my playlists. So its useless right now. Thankfully I've got backup of my playlists but the damage has been done.

Edit: now the button appeared, but I can't import videos from an exported backup list I've done in the previous version, no matter whether its JSON or TXT format. Pasting copied videos from extention memory does not seem to work either. On all my efforts it responds with only "precondition check failed" error message.

UPD: It appears that Precondition check fail error was due to playlist having removed/private videos, so selecting these videos for copying or moving into another playlist results in failure. Other than that extention works fine.

This is a pretty great extension and makes YouTube a LOT more usable, but I just don't understand why it uses RANDOM ELEMENT NAMES. 🤨 Why does it create elements called "msfy-wrapper-########" with random names instead of a proper defined name? That just makes it hard to style it with CSS (eg shrinking the overlay or changing colors). 🤦 I can't see any practical reason for this, and even if there is, surely there's a way to accomplish that purpose with a proper standardized way instead of this, such as doing that with a class or ID instead of *tag-name*.

Crazy good functionality, but it's so heavy on resources that, I need to turn it off when you not composing playlists. Loading page on firefox on linux have enough lag to eat 2 candies or drink half glass of b33r.

This extension is excellent. I loved it. It has everything I wanted. I needed something to help me find videos by title within my playlist and with the filters in this extension I could finally find the videos I was looking for in my list of over 2000 videos and can move them to a new playlist!!!!

I saw that you can copy and paste the videos with CTRL+c and CTRL+v between playlists, but I was thinking if you could make it possible for a future version of this extension that when you copy also copy the URLs to the clipboard, ex:

https://youtube.com/watch?=vid1 https://youtube.com/watch?=vid2 ..


I know they can be exported to a file, but it would save me a few steps to have them directly in the clipboard instead of downloading a file, copying the URLs and then deleting a file that I will no longer need.

This saves a lot of time for me, so it's greatly appreciated.
I know there is a shortcut ctrl+q to toggle the addon (which unfortunately overwrites the firefox close shortcut), but I also ask for a clickable toggle in the extension menu.
I don't like the multiselect toggle always being in the youtube page header since you only need it in playlist pages so I suggest it appears only when it is needed; but it could also be removed altogether and put into the extension menu instead.

Also the donate heart button is too flashy.
(Thank you to whoever commented that it can be removed with the Ublock Origin filter "www.youtube.com##[id^="msfy-donate-icon-"]")

nice addon, cant close firefox on mac with cmd + q anymore though, as long as this addon is enabled.

i like this, wish there was a little more customization tho.

(re: selection error)it's fixed now, thank you!

Would be 5 stars if it had the ability to mass remove videos in a playlist that are in your watch later playlist kinda like how back in the day youtube would let you remove a whole playlist from your watch later playlist if every video in the playlist was in your watch later playlist already but what i would rather have is the ability to remove the videos in the playlist that are in your watch later playlist without needing to have every video from the playlist in your watch later playlist, i would also be fine with just a remove from watch later button like the add to watch later button but rather then adding videos that aren't already in the watch later playlist to the watch later playlist the button would remove the videos from the watch later playlist if there already in it. The reason i want this / need it is because i'm two years behind on some of the youtubers i watch leading to me having lets plays from them that i haven't watched yet with most of them being close to or longer then 100 videos meaning if i watch the first episode of the lets play and don't like it and end up not watching the lets play it ends up taking up room in the playlist until i get around to removing it all which is a real pain when they're 100 videos long, so if you could add the ability to remove playlist videos from watch later that would be super helpful and make my year no really it would make my year if you added it. Also sorry for making you read the word playlist 15 times well 16 now.

This add on is incredibly helpful and mostly solves the problems caused when youtube removed their original edit playlist options.

I do have one problem though.

When selecting multiple videos in a playlist and moving them all "to top" everything works fine and the videos are moved to the top of the playlist in the same order they had been prior.

But when doing the same and moving "to bottom" the videos get moved into alphabetical order instead of the order they had been prior.

Would like to see if anyone else has this issue or if it could be solved.

Great add on otherwise though!

**EDIT**

My issue above was seemingly patched and fixed. Thanks!

Проблемы:
1)При смене YouTube акаунта (например акаунт №1 меняем на №2), расширение аккаунт НЕ МЕНЯЕТ и в акаунте №2 предлагает список плейлистов принадлежащий акаунту №1. Удаление расширения и повторная установка проблему не решает (акаунт №1 навсегда закрепился в расширении).
Если кто-то сталкивался с проблемой и нашёл решение напишите пожалуйста ОТВЕТ (переустановка браузера или использование нескольких браузеров, а также вкладки в контейнере, НЕ предлагать:)
2)При выделении всех необходимых видео и добавлении их в НОВЫЙ плейлист (который создаётся непосредственно в диалоге выбора плейлиста) в плейлист добавляется только одно видео (то из меню которого вызывали диалог добавления). НО, если создать плейлист заранее и добавлять видео в уже созданный плейлист, то всё работает отлично!

For some reason, if I add multiple videos from a playslit to another playlist, it adds them backwards. 1-2-3-4-5 becomes 5-4-3-2-1 in the new playlist if I select all 5 of them and choose to add them all at the same time. Also, be CAREFUL when removing videos in a 100+ videos playlist, it seems the app also select other videos by itself and you could remove them by mistake.

Edit: I know it ain't bothersome when it's only 5 videos, you can manually set the order; but it is bothersome when you add 100+ videos at a time.

I've had a number of issues with this extension and found it clunky (ui not loading properly when the page is refreshed, check-boxes appearing on parts of the website that are supposed to be disabled).

But, it provides such an essential service for playlist owners and I couldn't find any alternatives. I leave it disabled until I need to sort a playlist, which is then when this extension single-handedly saves hours of my time.

Nice effort. It only lacks the ability to add selection to specific playlist.

This addon is what I wanted. Thanks to the dev.
But this addon isn't perfect yet. First, the color of the interface being added does not match the background. Second, the placement of the interface makes the layout ugly.
I would like an option to hide the index number on all screens.
This review was generated by machine translation. I'm sorry if there is a part where the intention is difficult to convey.

Great for what it does. Missing a couple features I would like
1) Shift select/deselect to toggle a range. When on the liked videos playlist, I usually need to select a range of related recently watch videos and having to click each check is very time consuming.
2) Add to playlist. I use this for batch categorizing my liked songs. You can still do this by using add to queue button, and then youtube's own save queue to playlist feature.
3) De-duplication feature for playlist/queue, for anyone stupid enough to push save to playlist or add to queue twice. Youtube used to have a builtin de-dup button, but they got rid of it. Not really a feature I would expect from this, but one that wouldn't require much code change to do.