Think videos are the obvious elephant in the room, more so than JS bloat. One suggestion, use 304 Not Modified when possible, this saves the client re-download

Think videos are the obvious elephant in the room, more so than JS bloat. One suggestion, use 304 Not Modified when possible, this saves the client re-downloading a document as well as saving any more server side processing that might've been needed to create it. Always wondered why 'popular' JS libraries simply aren't simply bundled in with browsers. Perhaps could be a problem of preferential treatment but I think if the top dozen or so libraries/versions were bundled in then that'd potentially save a lot of bandwidth, latency, CDN usage, etc...