Re:Ask HN: Rate my app: PNGSquash
by meese_ on Saturday June 27, 2009 @03:36PM
(#677102)
Feature suggestion: Tell me which of the 4 compressors gave the best result.
This is a good idea, but I can't technically do this currently. The compressors are run one after another (it's essentially like "pngcrush infile outfile && optipng outfile && advpng outfile && pngout outfile"), so there is no real "best result", it just gets a bit smaller each time.
Also, since the point of testing 4 png compressors is to get the smallest size possible, why not use "smallest" as the default setting?
That's a good point, I've just committed the change :)
Re:Ask HN: Rate my app: PNGSquash
by fhars on Sunday June 28, 2009 @06:25AM
(#677646)
Have you tested that the sequence is optimal? What if pngcrush changes the image in a way that will make on of the later steps miss it's most promising optimization? Oh the joys of combinatorial explosion...
This is a good idea, but I can't technically do this currently. The compressors are run one after another (it's essentially like "pngcrush infile outfile && optipng outfile && advpng outfile && pngout outfile"), so there is no real "best result", it just gets a bit smaller each time.
Also, since the point of testing 4 png compressors is to get the smallest size possible, why not use "smallest" as the default setting?
That's a good point, I've just committed the change :)
Thanks for the suggestions!