Ali Çine
About three weeks ago, I informed my university TAÜ (Turkish-German University) about the image size on their website homepage www.tau.edu.tr. I received no response, and when I checked their website today, no fix. I was suggested using the jpegoptim tool. To measure the size savings, I downloaded the first 20 large image files from the tau.edu.tr homepage today. First, I converted them from lossless PNG format to lossy JPEG format and the size decreased......
Feb 26 at 1:21pmWeb
Show threadAli ÇineFeb 26

Then, I optimized them all with jpegoptim, and the result was from 23.04 MB to 6.95 MB. The 16.09 MB difference is reflected as a slower image loading times. There was no noticeable change in image quality.

open source jpeg optim tool: github.com/tjko/jpegoptim