Based on the slides, this looks like it was an excellent talk from Eric Eggert. I wish I’d seen it delivered in person.
The Best Of The Internets
How to improve your website’s accessibility without going crazy
Online regex tester and debugger

If you struggle with regular expressions, you should check out this tool. It reminds me a lot of RegEx Buddy, a Windows program that was an immense help in trying to wrap my head around writing regular expressions.
Service Workers: Dynamic Responsive Images Using WebP Images
I really dig this approach to image optimizations for browsers that support the WebP image format. It shows how ServiceWorker can handle site-wide enhancements easily.
Tips for Creating Accessible SVG
An excellent overview of how to make SVGs more accessible, from the incredible Léonie Watson.
Not so micro optimizations

There’s some really interesting performance-related lessons to be learned from Google’s AMP project. This chronicles a few.
I’m gonna give the preconnect & prefetch stuff a whirl on this site to see if it helps speed things up at all. I gave the preconnect & prefetch stuff a whirl on this site, and it sped things up substantially.
The Cost of Frameworks

This is a fantastic investigation of framework performance on mobile by Google’s Paul Lewis. In short: frameworks make things more convenient for developers, but pass the inconvenience on to end users. For more, see Who Should Pay? and Who Should Pay 2: The Hosting.
Introducing EdgeHTML 13, our first platform update for Microsoft Edge

Tons of great stuff in this release. Notably: the picture element, the srcset (with w descriptors) & sizes attributes, CSS initial and unset keywords, a[download], :read-write & :read-only, :in-range & :out-of-range, more ES2015 goodies, and a ton more. Hooray for evergreen!
Hints for successfully managing an open-source project
A nice post from my colleague David Catuhe on what it takes to build a successful open source project.
Aural UI of HTML elements
This is an indispensible resource for understanding how screen readers treat your markup. Many thanks to the Paciello Group for putting it together.
50 Female Tech Influencers You Need To Follow on Twitter
Just what it says on the tin. It’s a great compliment to the recommended speaker list I published.