You’ve probably just:
It’s very simple! Let us explain.
Maxresdefault stands for “Maximum Resolution Default“. It is a auto-generated filename for thumbnails to tell you that the image is at its highest quality.
YouTube does this for all images — regardless of the filename creators give their thumbnails.
Video-ID
/maxresdefault.jpgCopy that and paste it in the link — then hit enter, and the maxresdefault thumbnail will open in a new tab.
It should look like this:
That’s it! You’ve got the maxresdefault thumbnail.
Related: How to see thumbnail in Full Size.
Thank you for reading this,
Thumbnail Test