This is very promising. Images by far dominate a web page, both in number of requests and total number of bytes sent [1]. Optimizing image size by even 5-10% ca

This is very promising. Images by far dominate a web page, both in number of requests and total number of bytes sent [1]. Optimizing image size by even 5-10% can have a real effect on bandwidth consumption and page load times. JPEG optimization using open source tools is an area that really needs focus. There are a number of lossless JPEG optimization tools, but most are focused on stripping non-graphical data out of the file, or converting the image to a progressive JPEG (since progressive JPEG's have rearrange pixel data you can sometimes get better compression since there may be more redundancy in the rearranged data). Short of exceptional cases where you can remove massive amount of metadata (Adobe products regular stick embedded thumbnails and the entire "undo" history for an image) lossless optimization usually only reduces file size by 5-15%. Lossy JPEG optimization has much more potential. Unfortunately, beyond proprietary encoders, the most common lossy JPEG optimization exclusively is to reduce the JPEG quality. This always felt like killing flies with a tank, so advances in this area would be awesome. I've written extensively about Lossy optimization for JPEGs and PNG, and spoke about it at the Velocity conference. A post and my slides are available[2]. [1] - http://httparchive.org/trends.php http://httparchive.org/trends.php [2] - http://zoompf.com/blog/2013/05/achieving-better-image-optimization-with-lossy-techniques http://zoompf.com/blog/2013/05/achieving-better-image-optimi...