I have been collecting .gifs from the Internet for many years, but my passion and collection increased tenfold once I discovered Gifcities and the countless graphics sites that have been archived over the last couple of decades. Leeknet is a massive work-in-progress and labor of love. I have tens of thousands of .gifs that I have been actively sorting and organizing for many months. At my last measure, the complete collection sits around ~50,000, but only ~10% are on the site currently.
FYI - A very small handful of these .gifs contain explicit content, so viewer be warned!
PRO TIP: Hold CTRL on your keyboard while clicking any of the .gif files to open them in a new tab.
If you are wanting to harvest a whole folder, I would recommend using curl or a download manager like Xtreme Download Manager or Internet Download Manager.