Google WebP is a new imaging technique, it can let the webpage image effective compression, while not affecting the picture format compatible with the actual definition, and then let the whole webpage downloading speed.
Because of the current Internet transmission data are 65% pictures, WebP is for reducing the amount of data transmission network, accelerate the development of. In order to improve the JPEG image compression technology, they used a method based on VP8 coding ( in May 2010 open source ) picture compression, using predictive coding technology, and also uses a RIFF based very lightweight container. This container will only give each picture adds 20 bytes, but can make the picture author preservation metadata stored they want.
As with JPEG, WebP is a lossy compression using predictive coding technology. But Google said, this format 's main advantage lies in the high efficiency. They found that," the quality of the same circumstances, WebP format image volume than the JPEG format images of small 40%. At present, Google released WebP file decoder ( libvpx ) and command line tools ( webpconv ), used in JEPG format picture with WebP format conversion between, but the system supports a limited version of Windows Linux, later will be launched.
The WebP team is also developing WebKit kernel patch, used in the Google Chrome browser to provide native support for WebP format.
A fly in the ointment is, WebP format image encoding time" is 8 times longer than the JPEG format images".
Analytic personage thinks, although WebP format yet like JPEG format that, get a variety of hardware and software support, but Google promotion this format has the advantage of Chrome browser. The Google browser market share has reached more than 10%.
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