But fails to support Alpha channels (for true transparency)!
Firefox maker rejects the format, and will not support it until changes are made.
WebP’s lack of basic feature parity with JPEG in areas like metadata handling and ICC color profiles is identified by Muizelaar as another major problem with Google’s format. It also doesn’t add any important features that JPEG lacks, such as support for an alpha channel. He goes as far as using the phrase “half-baked” to describe the deficient WebP feature set.
Adopting a new image format in Web browsers is a big decision. Once a format becomes a part of the Web, it will have to be supported in perpetuity—adding overhead to the browser—even if it largely fizzles and only gains a small niche following. The chances of WebP attracting widespread use at this stage are very limited, so it seems prudent to avoid shoveling it into the browser.
Read more at arstechnica.com.
A post published on Google’s official Chromium blog last week highlights a number of quality improvements in the implementation and discusses the growing number of third-party adopters. Most significantly, Google is adding WebP support to its own Web applications—including Picasa Web Albums and GMail.