W3C Web Performance Working Group

Google is a key contributor and founding member of the W3C Web Performance Working Group, whose mission is to provide methods to measure aspects of application performance of user agent features and APIs.

Current publications and drafts in progress:

WebP - new image format for the Web

WebP is a new image format that provides lossless and lossy compression for images on the web. WebP lossless images are 28% 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 channel) with just 22% additional bytes. WebP also supports features such as animation, ICC color profile, XMP meta-data and tiling.


Google is a key contributor to the HTML5 working groups through our work with the standards community, as well as in the implementation of the standards through projects like Google Chrome and Chrome for Android. For latest discussions on the latest API's and their performance, check out our community projects like HTML5 Rocks and Chrome Experiments.