It's also been discussed that they're using WebP instead of the older JPG / PNG formats in Chrome Store / Hangouts / etc. https://techcrunch.com/2013/02/07/goo

It's also been discussed that they're using WebP instead of the older JPG / PNG formats in Chrome Store / Hangouts / etc. https://techcrunch.com/2013/02/07/google-now-uses-its-own-webp-format-instead-of-pngs-in-the-chrome-web-store/ https://techcrunch.com/2013/02/07/google-now-uses-its-own-we...