[dpup]

Medium Dev here, this is our fault. We convert images to JPEG when sizing and cropping, this obviously doesn't work well for vector style graphics.

We didn't want people to have to wait for a 500K PNG when a 60K JPEG would work for most cases. But, I think we'll probably make a change soon to keep the format the same as whatever it was uploaded with.

[keyboardP]

I use PNG Monster for very good lossless PNG compression http://www.vbgore.com/PNG_Monster Might be worth testing to see if it can reduce the sizes to an acceptable level.

[jstanley]

By the way, since this image is mostly flat colour, you may find that PNG compresses just as well as JPEG.

EDIT: Turns out the PNG is 95K, versus 62K for the JPEG. Worth the increase IMO.

[dpup]

Agreed, I'm going to make the change.