
A new report suggests Google is purposely slowing YouTube on non-Chrome browsers like Microsoft Edge and Mozilla Firefox. It seems the company has been deliberately hampering performance of the new YouTube Polymer UI. Chris Peterson, Technical Program Manager for Mozilla found the technology that underpins Polymer is only available in Chrome. He took to twitter to explain this means Edge and Firefox run the video site slower: “YouTube page load is 5x slower in Firefox and Edge than in Chrome because YouTube's Polymer redesign relies on the deprecated Shadow DOM v0 API only implemented in Chrome,” Peterson explained. “YouTube serves a Shadow DOM polyfill to Firefox and Edge that is, unsurprisingly, slower than Chrome's native implementation. On my laptop, initial page load takes 5 seconds with the polyfill vs 1 without. Subsequent page navigation perf is comparable.” Taken at face value, the web browser market appears to be competitive. Google, Microsoft, Mozilla and Opera have browsers that gain regular new features and are becoming more secure. However, a closer look shows the market is not really that open because Google's Chrome simply dominates. https://twitter.com/cpeterso/status/1021626510296285185