If you lost the original file for a video you uploaded years ago.
Just because you can download a thumbnail doesn't mean you own it. YouTube thumbnails are the intellectual property of the creator.
Hit Enter, and the full-resolution thumbnail will appear in your browser for you to save.
If you find yourself downloading thumbnails frequently, a Chrome or Firefox extension is the most efficient route.
If you don't want to use a third-party website, you can access YouTube’s image servers directly by tweaking a URL. Every YouTube video has a unique ID (the string of letters and numbers after v= ). ://youtube.com[Video_ID]/maxresdefault.jpg Steps:
"YouTube Screenshot and Thumbnail Downloader" or "Enhancer for YouTube." A Note on Copyright and Fair Use
Generally fine (e.g., using it as a wallpaper or for study). Commercial Use: Prohibited without permission.
Before we dive into the "how," let’s look at the "why." Downloading a thumbnail can be useful for: