Demystifying SPDY and HTTP/2

Jonathan Klein (Attend)
11:15am–11:45am Tuesday, 04/21/2015
Everything else
Location: Salon 1/2
Average rating: ****.
(4.44, 9 ratings)
Slides:   external link

HTTP/2 is the future of the web, and promises to bring performance improvements, simplified markup, and lower resource utilization on the server. On top of that, browser support is already quite high and is growing rapidly. In this talk we’ll go over the genesis of the protocol (including how SPDY fits into the picture), how HTTP/2 works under the hood, and how you can already leverage it to speed up your site. We’ll also look at some examples of how it impacts page load time for actual websites that you use every day, including how it affects specific optimizations like:

  • Domain sharding
  • Image sprites
  • Concatenating CSS files
  • Serving static assets from a cookieless domain
  • DataURIs
Photo of Jonathan Klein

Jonathan Klein


Jonathan is a software engineer at Etsy, where he focuses on solving web performance and scalability challenges. He started the Boston Web Performance Meetup Group, and contributes to a few open source projects, including the HTTPArchive, WebPagetest, and CSSLint. Jonathan blogs regularly at and can be found on Twitter at @jonathanklein.

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Picture of Jonathan Klein
Jonathan Klein
05/12/2015 10:33am PDT
All of the slides and links are available at If you want the PDF you can download it from Speakerdeck, which is linked from that short URL.
Jim Herzberg
05/12/2015 7:41am PDT


Is it possible that the slides could be made available for this talk. I really enjoyed the talk and would like to show the slides to my colleagues.