WebP – A New Image Format for the Web
Google has introduced a new Image format – WebP which is more compressed and smaller in size.
What is WebP?
According to Google – WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller in size compared to JPEG images at equivalent SSIM index. WebP supports lossless transparency (also known as alpha cha
nnel) with just 22% additional bytes. Transparency is also supported with lossy compression and typically provides 3x smaller file sizes compared to PNG when lossy compression is acceptable for the red/green/blue color channels.
A WebP file consists of VP8 or VP8L image data, and a container based on RIFF. The standalone libwebp library serves as a reference implementation for the WebP specification and is available at this git repository and as a tarball. The residuals typically contain many zero values, which can be compressed much more effectively. The residuals are then transformed, quantized and entropy-coded as usual. WebP also uses variable block sizes.
WebP is supported by a variety of tools. In addition, it is now natively supported in Google Chrome, the Google Chrome Frame plug-in for Internet Explorer, Opera 11.10 and Android Ice Cream Sandwich.
CNET reported that the biggest complaint so far involves the fact that WebP images are not compatible with software such as Windows, OS X, and Photoshop.
If you want to convert your JPEG or PNG files to the new WebP format just download the precompiled cwebp conversion tool for Linux, Windows or Mac OS X.
What do you think – Will WebP be useful really or not?