[openstreetmap-website] Losslessly compressed all images using optipng and advpng (#854)

David Gumberg notifications at github.com
Mon Dec 8 00:48:03 UTC 2014

PNG is lossless. I only put lossless in the title to clarify that the compression was lossless. The benefit is in space savings, but the benefit is most apparent in the reduced web page load times, and bandwidth used by having images that are significantly reduced in size.

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