Shift+Plus or Numpad Plus to like, Shift+Minus or Numpad Minus to dislike. Can't get any simpler.
YouTube Like-Dislike Shortcut Extension
• Shift+Plus (on the number row) to like a video
• Shift+Minus (on the number row) to dislike
• Numpad Plus to like
• Numpad Minus to dislike
Additionally:
• Pressing the like/dislike shortcut will only rate the video once, i.e., pressing again won't un-rate it
• To un-rate, use Shift+0 (on the number row)
• Auto-like videos based on a watch time threshold OR based on whether you're subscribed to the current channel
• You can customize the shortcuts and the auto-like threshold
** The extension does not reveal the videos' dislike counters **
Source code: https://github.com/avi12/youtube-like-dislike-shortcut
Source Manifest.json
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User reviews
Mayle Spric Lem (ID: 000000047d555d73) Voted 5 ★ - Updated 10/16/2023
Gürkan Işık (ID: 0000002878c8c179) Voted 5 ★ - Updated 10/07/2023
Desmond Ng (ID: 000000db66167917) Voted 3 ★ - Updated 06/03/2023
Abin Liu (ID: 00000066f0ce0f31) Voted 5 ★ - Updated 04/03/2023
Alessandro Chieffi (ID: 000000bfd31e08ad) Voted 5 ★ - Updated 02/07/2023