Open that link in your browser, and you will see the highest resolution version of the thumbnail. Chrome Developer Tools Method
Never use someone else's thumbnail to re-upload the same content; this can lead to copyright strikes or account termination. how to download youtube video thumbnail
If you don't want to use a third-party site, you can access the image directly from Google’s servers by tweaking a URL. Open that link in your browser, and you
First, find the Video ID. It is the string of letters and numbers after v= in the URL. Example: In ://youtube.com , the ID is dQw4w9WgXcQ . Next, paste that ID into this template: ://youtube.com Your final link will look like this: https://youtube.com First, find the Video ID
Generally applies to commentary, criticism, or news reporting.
Here is everything you need to know about how to download a YouTube video thumbnail in high resolution. Using Online Thumbnail Downloaders