It works exactly how it says! It even gives an option to only apply to videos, or only apply to images. As someone who occasionally works with low resolution images, it's a godsend!

Can't turn off the effect with the options inside the addon and had to disable it to turn it off. Other than that, it does exactly what it meant to do.

Does what it says well. Haven't seen any problems, except from some sometimes illegible text for small images, but that's not the extensions fault.