Wikipedia:Articles for deletion/OptiPNG
No option on whether this has  yet, but I wanted to mention that it's not a totally frivolous entry: OptiPNG has 369 hits on Wikimedia Commons|Commons and 372 in Article+Template+Category+File on en.wikipedia.org itself.  Not sure if File search on en.wikipedia.org and File search on Commons overlapped.  I use OptiPNG followed by PNGOUT as a matter of course before I upload a PNG, including on Wikimedia projects
— User:Closeapple, 11:03, 10 January 2010 (UTC)
Stance: comment
Cited policy: WP:RS (Wikipedia:Reliable sources)