Interestingly, the pixelization/noise effect is applied clientside, so if you open an image in a new tab, you can see the original. Originals look much better, in my opinion.

You can also click on an image to open the original in a lightbox. (I should make that more obvious.)

The dithering happens server-side (er, laptop-side). Experimented with a JS filter but it just didn't hit the way I wanted it to. Plus I save a lot of bandwidth this way