June 9th, 2013
Google offers the new WebP image-format as a way to decrease the bandwidth of your site. You can convert your JPEG and GIF images to the WebP-format, resulting in upto 40% less bandwidth. While WebP is actually only supported by the Chrome browser, it is already a vital and reliable bandwidth-saving tool, simply because more and more people choose for Chrome (currently already 36% of all internet users).
Note that you will need to install the Google Webp “cwebp” binary on your server, for this extension to work. In general, if you are using a shared hosting site, forget about this. If you are owning your own server, install this as soon as possible: Bandwidth costs money.