Google Unveils "Zopfli" Compression Algorithm
Written by Michael Larabel in Google on 1 March 2013 at 01:56 PM EST. Add A Comment
Google has announced Zopfli, a new general purpose data compression library that's open-source. Zopfli implements the Deflate compression algorithm that yields a smaller output size than previous techniques.

While it's higher data density with Zopfli, Google claims that only the compression speed of this new method is slower but that file decompression speeds are unaffected. While the compression is "a lot slower", Zopfli is said to be 3~8% smaller than Zlib at maximum compression.

Another limitation that may prevent some areas where Zopfli is worthwhile is that aside from the much longer compression time, it usues about 2~3x more CPU time than zlib. Google engineers recommend Zopfli for cases like sending static content over the network. More details on Zopfli compression can be found via the Google Open-Source Blog.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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