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Shawn is an Engineering Manager on the Product and Customer Success Teams at Mobify. He loves to hack both on the front-end and back-end, with a heavy focus on the user experience. When he isn't hacking, you likely find him playing hockey/video games, eating, or travelling. Shawn has a BSc in Computer Science from Simon Fraser University in Vancouver. You can follow him at @shawnjan8.
Mark Zuckerberg once said, “The biggest mistake that we made, as a company, is betting too much on HTML5 as opposed to native… because it just wasn’t there. And it’s not that HTML5 is bad. I’m actually, long term, really excited about it.” And who wouldn’t be excited by the prospect of a single code base that works across multiple platforms?
Unfortunately, Facebook felt that HTML5 didn’t offer the experience it was looking to build, and that’s what it’s really about: the experience. I believe what Mark was really trying to say was that their biggest mistake was making a technology-driven decision instead of a user experience-driven decision. At the end of the day, we should be making decisions that deliver value to our customers, and sticking to a particular technology is generally not the best way to achieve that.
Responsive images are one of the biggest sources of frustration in the Web development community. With good reason, too: The average size of pages has grown from 1 MB to a staggering 1.5 MB in the last year alone. Images account for more than 60% of that growth, and this percentage will only go up.
Much of that page weight could be reduced if images were conditionally optimized based on device width, pixel density and modern image formats (such as WebP). These reductions would result in faster loading times and in users who are more engaged and who would stick around longer.