Learn to optimize your PNGs
optipng -o 7 -strip all filename.png
Your """""""""""art""""""""""" preserved, filesize problem solved
It is not advised to use PNG for highly complex images and photography.
PNG saves images by remembering repeating pixles. For example a completely white background wouldn't be stored as "WHITE WHITE WHITE WHITE WHITE ..." but as "100000 pixels of white please". This obviously only is useful if there are large arrays of the same colour present, as is the case with vector graphics and generally computer-drawn images. Images where there is not a lot of repetition of the same colour, e.g photographs or computer generated graphics with gradients actually become larger when converted to PNG. In that case you should use JPG instead.
There have been different R2 units in the previous 6 Star Wars films as well you fucking retard. Have you even seen the film? The robot in OPs picture doesn't even look like R2D2, look at the fucking colors.
sure bro, wait till the bluray release shows up and you'll see how wrong you are. it's r2d2. I've seen it in a Cinema and it was clearly r2. stay buttblased and in denial, jj. you fucked up boy.
JPGs only lose quality on old systems like WinXP or when pushing it through the 4chan>reddit>tumblr>9gag centipede.
jpgs loose quality on your drive do to rotational velodencity. you should always save your images as png if you care about quality. I once found a jpg image on my pc that was 10 years old and boy, the pixelation, the artefacts... I could barely tell what was on it.