http://news.ycombinator.com/item?id=4167964 http://news.ycombinator.com/item?id=4167964 (by molf, apparently someone involved in creating TinyPNG) > Mostly

http://news.ycombinator.com/item?id=4167964 http://news.ycombinator.com/item?id=4167964 (by molf, apparently someone involved in creating TinyPNG) > Mostly pngquant (the new version), optipng and > advpng. We are still tuning parameters and > swapping in and out tools based on our benchmarks > and testing suite. from their debut on HN back in June, where they caught a lot of flack for being a web service: http://news.ycombinator.com/item?id=4167964 http://news.ycombinator.com/item?id=4167964