To get the video thumbnail of any YouTube Video
enter the regular URL of the video into the textbox below.
Your URL should look like this:
https://www.youtube.com/watch?v=3KXZduvOfDo&list
Step 1 : Go to www.YouTube.com, Search a video.
Step 2 : Copy the URL of the video (Example: https://www.youtube.com/watch?v=RK1K2bCg4J8 ).
Step 3 : Paste that URL in the box given above and then click the "Get YouTube Thumbnail" button.
Step 4 : Choose your Thumbnail size and Download it.