README
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Warning: This library should probably not be used just yet
lossypng
Library version of the lossypng command line tool.
Shrink PNG files by applying a lossy filter
Installation
go get -u github.com/peterhellberg/lossypng
Feel free to copy all or parts of this package into your own codebase.
Examples
Original image 320 KB
The optimized images were encoded to PNG using a png.Encoder{png.BestCompression}
Optimize(m, RGBAConversion, 10) 156 KB
Optimize(m, GrayscaleConversion, 10) 40 KB
Credit
This compression technique was invented by Michael Vinther for his excellent Windows program, Image Analyzer. It does much more than just compression. It was ported and improved by William MacKay.
I have just converted it into a library.
License
All code in lossypng is public domain. You may use it however you wish.
Documentation
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Overview ¶
Package lossypng is a library version of the lossypng command line tool.
Installation
go get -u github.com/peterhellberg/lossypng
Index ¶
Constants ¶
View Source
const ( // NoConversion does not convert the image NoConversion = iota // GrayscaleConversion convert image to grayscale GrayscaleConversion // RGBAConversion convert image to 32-bit color RGBAConversion )
Variables ¶
This section is empty.
Functions ¶
Types ¶
This section is empty.
Source Files
Directories
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