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Questions tagged [pngcrush]

PNG (image) file optimizer utility to improve data compression and optionally to remove unwanted data chunks, and to list the chunks in the file.

Pngcrush is a command line utility for optimizing (Portable Network Graphics) files.

Its main purpose is to reduce the size of the PNG IDAT datastream by trying various compression levels and PNG filter methods. It also can be used to remove unwanted ancillary chunks, or to add certain chunks including gAMA, tRNS, iCCP, and textual chunks.

The command "pngcrush -n -v file.png" provides a listing of the chunks without writing a new file.

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pngcrush command line do nothing for -text option

From this page http://en.wikipedia.org/wiki/Pngcrush I use this command line in Mac OS X Terminal pngcrush -rem text InputFile.png OutputFile.png It's work ! But this : pngcrush -text b "Software" "pngcrush" image1.png image2.png do nothing and…
benoît
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pngcrush caught libping error, but only when building for device

I have some png files in my iPhone app project. They work fine when I build for the simulator. But when I build for the device, suddenly every single png file generates the dreaded "while reading such-and-such.png pngcrush caught libpng error: ...…
Brian Rak
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Facing PNGCrush issue on some of XCode / Mac OS (Not specific)

I have developed an application using Mac OS 10.7.5 and XCode 4.6.2. Application is working fine in my machine without any error/warnings. But when I try to run in another machine Mac OS 10.8 and XCode 4.6.2, it shows pngcrush error for some of the…
Mrunal
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PNG Byte Swap at runtime

I've got an app that is generating thumbnails of images at runtime. But they're not in the optimized format that Xcode creates when images are added to a project. Is there a library or a function call I can use to convert these images?
Jacob White
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How to do PngCrush for my images of iOS app?

Possible Duplicate: What is PngCrush in iOS? I'm having a doubts about image optimisation technique of iOS apps Pngcrush My doubt is, Is pngcrush built-in to xcode or do we need to explicitly download pngcrush tool and optimise our images? If…
Graham Bell
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