This is such a minor nitpick, but I'm bothered by it because I see so much performance-shaming coming from some Googlers:
The site loads large pictures for all viewport widths (ideally they'd load downscaled images for smaller viewports — it's wasteful to load a large image for small devices) and the image files are PNGs when they should be jpeg or webp (example: http://waymo.com/static/images/journey/streets.png)
I've noticed this quite a bit with Google stuff. There's blogger, for example, which is one of the rare sites that doesn't show me anything until I whitelist the entire site in uMatrix.
Hmmm. I'm more usually aware of helpful, insightful, useful articles on how to improve performance, and a constant stream of optimizations to web technology to the same end.
Not that the site in question isn't bloated brochure-ware. Just that I wouldn't characterize Google that way.
The site loads large pictures for all viewport widths (ideally they'd load downscaled images for smaller viewports — it's wasteful to load a large image for small devices) and the image files are PNGs when they should be jpeg or webp (example: http://waymo.com/static/images/journey/streets.png)