2010 update: Lo, the Web Performance Advent Calendar hath moved Dec 12 This post is part of the 2009 performance advent calendar experiment (12 articles down, 12 more to go). Stay tuned for the articles to come. Let’s continue the topic of reducing file sizes started with the previous post and talk about making images […]

JPEGtran is cool because it lets you optimize JPEG images losslessly by: Stripping meta data (meta is sometimes bulky and useless for web display) Optimizing Huffman tables or Convert a JPEG to progressive encoding From my experience 1 is more important than 2 or 3 and 3 gives better results than 2 for images over […]