You can access thumbnails directly by using their specific URL pattern if you have the . The Video ID is the 11-character string found in the URL after v= (e.g., in youtube.com/watch?v=8nsv67nUhTo , the ID is 8nsv67nUhTo ).
https://img.youtube.com/vi/VIDEO_ID/hqdefault.jpg Download videothumbnail (3) jpg
Replace the file name with 1.jpg , 2.jpg , or 3.jpg to get different auto-generated frames from the video. Steps: Copy the Video ID from the YouTube URL. Paste it into one of the URL formats above. Open the new URL in your browser. You can access thumbnails directly by using their