Zach’s ugly mug (his face) Zach Leatherman

Performance and Responsive Web Design (2013)

May 17, 2013 Watch in 61 minutes 🇺🇸 USA

Updated: There is a newer version of this presentation available.

The presentation was originally given to NebraskaJS in November of 2012. Unfortunately due to my own technical ineptitude with screen recording software I wasn’t able to publish the talk. So when I was asked to present on the topic again at the Omaha Mobile Group, I thought it would be a good opportunity to update the talk and get a second chance at recording it in front of an audience.


Watch on YouTube: Performance and Responsive Web Design (2013)

View the Slide Deck (April 2013)


  • 0:00 Title and Personal Background
  • 3:04 Responsive Web Design Primer
  • 5:24 The Web has Responsive Roots
  • 6:24 Alternatives to RWD
    • Do nothing
    • Create separate mdot site
  • 14:44 Common RWD Performance Problems
    • 16:03 Blocking JavaScript
    • 18:27 Blocking CSS
    • 30:07 Images
      • 31:11 Manipulating Images with CSS
      • 36:47 Responsive Images (in HTML)
  • RWD Buzzkills
    • 45:40 Advertising
    • 46:47 Social Networking Widgets
  • 50:23 RWD Showcase Showdown
  • 54:21 Conclusion
  • Questions (Some really great discussion here)
    • 56:19 How do Data URIs impact the critical path?
    • 57:43 The difference between Responsive and Adaptive?
    • 58:18 Do you have to start from scratch with RWD?
    • 59:39 How would Jimmy Wales and Wikipedia implement RWD?

(Side note: I wish there was an equivalent to TimeJump for YouTube embeds)

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Zach Leatherman IndieWeb Avatar for a builder for the web at IndieWeb Avatar for He is the creator and maintainer of IndieWeb Avatar for https://www.11ty.devEleventy (11ty), an award-winning open source site generator. At one point he became entirely too fixated on web fonts. He has given 79 talks in nine different countries at events like Beyond Tellerrand, Smashing Conference, Jamstack Conf, CSSConf, and The White House. Formerly part of Netlify, Filament Group, NEJS CONF, and NebraskaJS. Learn more about Zach »

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