Zopfli google's new compression code to speed downloads
Zopfli google's new compression code to speed downloads
A new general purpose data compression library called Zopfli that can be used to speed up Web downloads by Google as Opensource Code.
Zopfli means bread recipe. Zopfli got its name from a Swiss bread recipe, is an implementation of the Deflate compression algorithm that creates a smaller output size compared to previous techniques, Zopfli is a Zopfli Compression Algorithm.
In the Google Open Source Blog last week, Vandevenne wrote, "The smaller compressed size allows for better space utilization, faster data transmission, and lower Web page load latencies. Furthermore, the smaller compressed size has additional benefits in mobile use, such as lower data transfer fees and reduced battery use,".
Zopfli is a compression-only library and existing software can be used to decompress the data, he said. Zopfli is compatible with Zip, PNG, gzip and HTTP requests among others, Vandevenne added.
Zopfli's output is generally 3 percent to 8 percent smaller compared to zlib, another compression library based on the Deflate compression algorithm, according to Vandevenne. "We believe that Zopfli represents the state of the art in Deflate-compatible compression," Vandevenne said.
Google posts compression code Zopfli "This compressor takes more time (~100x slower), but compresses around 5 percent better than zlib and better than any other zlib-compatible compressor we have found," Google said on Zopfli's Google Code page. The code is available under Apache License 2.0.
The new compression library, however, requires two to three times more CPU time than zlib at maximum quality. Therefore, it is best suited for applications where data is compressed once and sent over the network many times, such as static content for the Web, Vandevenne said.
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| Zopfli google's new compression code to speed downloads |
Zopfli means bread recipe. Zopfli got its name from a Swiss bread recipe, is an implementation of the Deflate compression algorithm that creates a smaller output size compared to previous techniques, Zopfli is a Zopfli Compression Algorithm.
In the Google Open Source Blog last week, Vandevenne wrote, "The smaller compressed size allows for better space utilization, faster data transmission, and lower Web page load latencies. Furthermore, the smaller compressed size has additional benefits in mobile use, such as lower data transfer fees and reduced battery use,".
Zopfli is a compression-only library and existing software can be used to decompress the data, he said. Zopfli is compatible with Zip, PNG, gzip and HTTP requests among others, Vandevenne added.
 |
| Zopfli's Google Code page |
Zopfli's output is generally 3 percent to 8 percent smaller compared to zlib, another compression library based on the Deflate compression algorithm, according to Vandevenne. "We believe that Zopfli represents the state of the art in Deflate-compatible compression," Vandevenne said.
Google posts compression code Zopfli "This compressor takes more time (~100x slower), but compresses around 5 percent better than zlib and better than any other zlib-compatible compressor we have found," Google said on Zopfli's Google Code page. The code is available under Apache License 2.0.
The new compression library, however, requires two to three times more CPU time than zlib at maximum quality. Therefore, it is best suited for applications where data is compressed once and sent over the network many times, such as static content for the Web, Vandevenne said.
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