YouTube Playlist Organizer

I add a lot of YouTube videos to my Watch Later list throughout the week and binge them on the weekends. I generally like to watch videos that fall under the same topics together (e.g. all art videos, all music videos, etc.). Currently, it is very tedious to move videos in my Watch Later list into other playlists. I created this Userscript to help me organize my Watch Later list (as well as any other playlists):

Action	Default Web UI	YouTube Playlist Organizer
Move to another playlist	5 Clicks	1 Drag
Add to Watch Later (from a normal playlist)	2 clicks	1 Drag
Add to Queue	2 Clicks	1 Drag
Remove from List	2 Clicks	1 Drag

Why Userscript instead of YouTube API

As of 2016, the Watch Later list has been depricated from YouTube's API. As a result, the only way to programatically make changes to the Watch Later list is by emulating user actions on the website or using YouTube's internal API.

Known Issues

• If you try to add a video into a playlist that already has the video, it will appear multiple times in the playlist

• This tool uses YouTube website's internal API that changes on a regular basis so this userscript is prone to randomly breaking

Installation Guide

1. Install a Userscript manager for your web browser

   • Greasemonkey (Firefox)
   • Tampermonkey (Chrome, Firefox, Safari, Edge)

2. Download the latest build. If you have Greasemonkey or Tampermonkey installed, then you should immediately be prompted with a confirmation window asking you if you wish to install this Userscript.

Dev Guide

1. Install prereqs

   • node
   • pnpm
   • Tampermonkey on Chrome

2. In Chrome:

   • Go to chrome://extensions/
   • Go into Tampermonkey's details
   • Enable Allow access to file URLs

3. Run dev server

   pnpm install
   pnpm dev
   

4. In Chrome:

   • Go to http://localhost:8080/userscript-youtube-playlist-organizer.proxy.user.js and install the script