I've been trying to uncrush PNG's extracted from an ipa for a while and can't seem to be able to get anything to work. I don't own any Apple devices (except for an iPod Touch, a gift from a friend) but I want/need an app that has only been released for the iPad, I have extracted the contents of the ipa but I can't find a way to uncrush the PNG's. Is there any way that I can do this on Windows? I can actually use a Mac app because I have a running Hackintosh, but, it is running an older version of OS X (at least older than 10.6 but I can't check cause it crashes). Example of crushed PNG: Any ideas?
Now that I'm knee-deep in MacBook I love working with command line applications. There's a certain beauty in the simplicity of using the console instead of a nice GUI.
One task I use the console for often is reducing the size of PNG files using the powerhouse that is PNGCRUSH. The Shell Script # directive pngcrush -reduce -brute source.png destination.png #result Best pngcrush method = 113 (fm 0 zl 9 zs 0) for destination.png (33.38% IDAT reduction) (33.43% filesize reduction) CPU time used = 835.707 seconds (decoding 151.450, encoding 679.145, other 5.112 seconds) The above directive is a basic usage of PNGCRUSH. PNGCRUSH offers a wealth of options that allow you to optimize your PNGs.
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Firstly we need to download and install pngcrush. That is the easy part. Then we have to create a.
If you use many PNGs on your website, optimizing them using PNGCRUSH is a must. Using the above directive, PNGCRUSH took a 11.7MB down to 7.8MB. NO QUALITY LOSS. Sure it took over 10 minutes, but think of the bandwidth your site will save. Gracepoint After Five just recently launched punypng () which combines a lot of the open-source technologies out there.
The Ask.com User Experience team that I’m a part of uses punypng as our weapon of choice as well as the Gracepoint Fellowship Church web team. It’s very competitive to smush.it and pngout, and punypng beats them out most of the time (though don’t my word for it, try it out yourself to see). I think the great thing about something like punypng versus the command-line tools is that you can throw a whole folder at punypng and just let punypng do all the work to figure out which tool is best for the job. Sometimes converting a JPEG to PNG and then compressing it down is better sometimes jpeg-tran or jpegoptim is better. Punypng just works.
For more info about punypng on the Gracepoint After Five blog. This is why I always say, you NEVER stop learning.
I thought I “got it” when it came to graphics optimization. Been Googling my but off and found out that there’s a whole WORLD of information I didn’t know about. Especially when it comes to my beloved PNGs.
LOL Good article! I’ll be watching this blog for the follow-up article. I’m curious as to how stacks up.
I’m a lot like Ryan. I’m not necessarily terminal adverse, but after years of Macs and WIndows machines, I just prefer a GUI app over command line app.:). I can recommend this service: They strip off meta data but too compress the image data as well. Purists may complain, but the results are very good, in deed, for file size and image quality Source Image/No Alpha/24-Bit PNG (401,9 KB): 216,3 KB with tinypng.org 375,7 KB with PNGpong 381,3 KB with Yahoo Smush.it @Conrad Chu: Your service isnt free for image sizes above 150KB:-( You are inventor of this software and also running this paid service. So I have to consider your comment here to be spam? I can recommend this service: They strip off meta data but too compress the image data as well. Purists may complain, but the results are very good, in deed, for file size and image quality Source Image/No Alpha/24-Bit PNG (401,9 KB): 216,3 KB with tinypng.org 359,5 KB with pngCrush (ImageOptim, OS X-GUI for pngCrush) 375,7 KB with PNGpong 381,3 KB with Yahoo Smush.it @Conrad Chu: Your service isnt free for image sizes above 150KB:-( You are inventor of this software and also running this paid service.