Losslessly optimize images

[CoolOppo]

I reduced the size of all the images changed in this commit with OptiPNG and Gifsicle.

[lewisje]

If you want to be super-optimized, try TruePNG (to optimize palette in transparent areas) followed by PNGOUT, AdvPNG, AdvDef, DeflOpt, Defluff, and DeflOpt again...or something like that.

As for GIFs, I don't know any other lossless optimizer, but I know for JPGs there is JPEGOptim (I haven't checked whether the repo even has any JPGs).

I might try something like that once this pull request is either merged or blocked.

[CoolOppo]

@lewisje The best way to optimize JPEGs losslessly is mozjpeg. The absolute best for PNGs is zopflipng, without a doubt, but it's pretty slow.

[lewisje]

I just found pre-built Win32 binaries of mozjpeg, which are very helpful: http://mozjpeg.codelove.de/binaries.html

[CoolOppo]

It's actually really easy to build mozjpeg on Windows. Just follow the instructions Mozilla provides (with CMake and all that). I can give you a build for the latest version if you want; I'm going to actually build it right now.

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On Thu, Apr 30, 2015 at 5:50 PM James Edward Lewis II < notifications@github.com> wrote: I just found pre-built Win32 binaries of mozjpeg, which are very helpful: http://mozjpeg.codelove.de/binaries.html — Reply to this email directly or view it on GitHub <#1274 (comment)>.

[CoolOppo]

@lewisje I just built everything with GCC 5.1.1 (from here) on Windows. Here's the build:

https://www.dropbox.com/s/80p9ggldaj7acvs/WjEbo-1430449118.876.7z?dl=1

[lewisje]

Since this PR convo, I have found FileOptimizer, which bundles the utilities discussed here, and more things, like Leanify: http://nikkhokkho.sourceforge.net/static.php?page=FileOptimizer

[chrisaljoudi]

Also check out ImageOptim.

[lewisje]

I've known about that and PNGGauntlet and Trimage for a long time (I heard about PNGGauntlet first, and its homepage recommended ImageOptim for OS X and Trimage for Linux), but FileOptimizer is newer and more comprehensive; however, there isn't an obvious way to get FileOptimizer to run on OS X, while FileOptimizer does run under Wine for Linux.