Thumb Savefor YouTube
Thumbnail grabber
Every thumbnail, every size.
Paste a YouTube link to pull all available thumbnails. Letterbox bars are detected and trimmed, so what you copy is the real picture.
Supports
watchyoutu.beshortsembedliveID
Thumbnails are loaded directly from YouTube's image servers in your browser — nothing is uploaded. Some sizes only exist for HD uploads; those are marked as not generated. Trimmed downloads are re-encoded at 95% quality.