How To Download Thumbnail Images of any YouTube video

This Is the best Way to download any YouTube video thumbnails fast. 

Step 1: copy youtube video URL i.e..https://www.youtube.com/watch?v=v2v6820qBnI

Step 2: Open This Website --> Thumbnail Downlaoder

Step 3: After that past simple hit enter or search button

Step 4: Now Choose your Thumbnail Size  and simple Right click and Save.

                                                        Small Thumbnails (120x90)

Medium Quality (480x360)

High Quality (480x360)

High Resolution / Definition