The script: https://greasyfork.org/es/scripts/7365-youtube-pic-link is not working anymore so I'm made this one.

Hint: This script could be more useful if you install Imagus extension.

Imagus for Chrome: https://chrome.google.com/webstore/detail/imagus/immpkjjlgappgfkkfieppnmlhakdmaab Imagus for Firefox: https://addons.mozilla.org/en-US/firefox/addon/imagus/