The speaker discusses their website, which has a lot of users and uses close to a terabyte of bandwidth per month. They mention that the images on the website load quickly because they are optimized for mobile and desktop usage, and the total size of all the images is less than 100 megabytes. They share an optimization script for website design and image optimization. They recommend using Linux for this process, but also mention an image resizer for Windows users. The script can change the resolution, optimize PNG and JPEG files, and even convert images to webp format. The speaker mentions that despite having several hundred articles on their website, they only have around 50 megabytes worth of images hosted on GitHub. They emphasize the importance of optimizing images and provide instructions for installing the necessary commands to use the optimization script.