Google have released this encoder for JPEGs which promises 20-30% smaller file sizes without any perceptible loss of quality.
Saturday, March 18th, 2017
Monday, August 29th, 2016
The history of the GIF—a tale of licensing, compression, and standards.
Tuesday, May 7th, 2013
Some good thinking from Jason here. In a roundabout way, he’s saying that when it comes to responsive images—as with just about every other aspect of web development—the answer is …it depends.
Thursday, October 25th, 2012
You’ve probably seen this already, but it’s really worth bearing in mind: when you’re scaling up JPGs for retina display you can safely reduce the image quality by quite a lot—to the point of getting the exact same file size as a higher quality image that’s half the size.
Sunday, July 22nd, 2012
This looks like a really handy tool for reducing the file size of JPEGs without any perceptible loss of quality (in much the same way that ImageOptim works for PNGs)—available as a Mac app or an installable web service.
Wednesday, May 2nd, 2012
An in-depth analysis (graphs! data!) of how popular sites are using—or not using—compression.