File:sopa hidden message.png
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|current||02:43, 24 July 2013||740 × 306 (11 KB)||Hello71||For the hell of it, let's run it through OptiPNG.|
|02:42, 24 July 2013||740 × 306 (13 KB)||Hello71||Use 0-4 instead of 0-10 to improve readability. (heh)|
|23:35, 22 August 2012||740 × 306 (26 KB)||Cos||Image from comic 1005: SOPA (source: http://imgs.xkcd.com/comics/sopa.png), with a luminosity level change (0-10 expanded to 0-255) to reveal the message hidden inside it.|