Paul Lewis

@aerotwist

Googler who noodles with code and design on the web. I help people fix performance, UX and UI issues. Views totes my own and stuff.

London
aerotwist.com
Joined May 2009
515 Photos and videos Photos and videos

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  1. Pinned Tweet
    20 May 2016

    My High Performance Web UI talk from is all on the YouTubes:

    10 replies 144 retweets 343 likes
  2. Retweeted
    Mar 19

    Proper access to the browser’s a11y internals? Yes please.

    Blink: Intent to implement: Accessibility Object Model
    2 replies 24 retweets 60 likes
  3. Mar 16

    I've spent 3 days hunting down a video transcoding bug only to discover it was a tool later in the chain that has the bug >_<

    2 replies 40 likes
  4. Retweeted
    Mar 15

    Learn about creating collaborative environments with > Just make it look pretty…

    5 retweets 20 likes
  5. Mar 10

    Shout out for Intersection Observers. They’re super useful!

    0:19
    Lazy loading without scroll handling? shows you another way on todays . Watch here:
    3 replies 10 retweets 76 likes
  6. Retweeted
    Mar 8

    Sydney peeps! Sign up for the upcoming PWA Roadshow event. Loads of Chrome’s DevRels are gonna be there.

    2 replies 11 retweets 14 likes
  7. Retweeted
    Mar 2

    🔊 New HTTP:203 podcast! Paul & I talk about animation performance, <select> usability, and why I'm bad at quizzes.

    14 replies 50 retweets 149 likes
  8. Retweeted
    Mar 1

    Released css-aspect-ratio, a tiny module for preserving aspect ratios in pure CSS w/ custom properties. Take a look!

    3 replies 21 retweets 54 likes
  9. Mar 1

    The correct answer is 300px; min-* outranks max-*. 1/3 of respondents chose the correct answer. Don't you just adore the web? No? Come back!

    You have a div, it has max-height: 200px and min-height: 300px. Without checking, how high is the div, 200px or 300px?
    5 replies 15 retweets 75 likes
  10. Feb 28

    You have a div, it has max-height: 200px and min-height: 300px. Without checking, how high is the div, 200px or 300px?

    42 replies 57 retweets 80 likes
  11. Feb 27

    I feel like I created a monster… well worth the time for some modern webdev giggles.

    making the least readable "hello world" imaginable.
    2 replies 6 retweets 46 likes
  12. Retweeted
    Feb 22

    📣 SimpleHTTP2Server 3.0 🎉 New: 🔥Firebase-compatible config Run a static host à la 🔥 locally & add HTTP/2 and push

    1 reply 78 retweets 152 likes
  13. Retweeted
    Feb 20

    📝 Do we need <h> - a new heading element?

    17 replies 122 retweets 155 likes
  14. Paul Lewis followed , , and 4 others
    • @rick_viscomi ‏

      devrel webperf . Coauthor of . Former 'r. Open sourced trunk8 and red dwarf projects.

    • @__apf__ ‏

      I lovingly hand-forge the green locks for . I tweet about security and the web. Proud Latina, despite the name.

  15. Retweeted
    Feb 15

    📝 MiniBlog: How to roll your own, lightweight Web Animations API

    3 replies 54 retweets 132 likes
  16. Feb 15

    Tbh I just like saying "Shaka packager" over and over. And over.

    0:25
    How do you code for bandwidths on a media player? explains all in here:
    2 replies 1 retweet 33 likes
  17. Retweeted
    Feb 13

    💡Lighthouse 1.5 🏠 optim/resp images, unused CSS, deprecated APIs audits. Export report as, emulation settings, more.

    2 replies 108 retweets 200 likes
  18. Retweeted
    Feb 9

    New: JavaScript Start-up Performance. What slows down web apps from booting up? Learn how to measure & improve 🔥

    A deep-dive into JavaScript start-up performance
    20 replies 526 retweets 1,137 likes
  19. Feb 1

    For situations where ¯\_(ツ)_/¯ doesn’t cut it.

    When someone ask you "why you code/design like that?" and you give them "the Paul"
    7 replies 45 retweets 174 likes
  20. Jan 23

    Excellent to see scheduling and priority via requestIdleCallback and requestAnimationFrame come to React! \o/

    What is React Fiber, you ask? Well… we rewrote React. 😳 has a great dive into why we did and how it works: .
    2 replies 18 retweets 72 likes
  21. Retweeted
    Jan 21

    We’re planning to rename because we are adding JavaScript. What’s your preference? Context:

    26 replies 7 retweets 27 likes

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