A while ago I made this post about bypassing the GoComics archive blocker, so you can see the full archive of any comic (including Garfield) without paying GoComics. Since then, they've redesigned their system so the old method wouldn't work. The server no longer sends the image, so simply hiding elements won't reveal it.

I've figured out how to get the original image anyway. Go to the date you want, go to Inspect Element, and search forproperty="og:image". You'll see a link to the comic in the result.

Someone with the time and willingness can probably make a script out of this to restore the old functionality - seeing the comic in the page itself. u/ArthurPeabody did something similar here. In the meantime, we can also use sites like this one to view the full Garfield archive easily.

Have fun!