This is an excellent write-up on how to build a truly cross-browser (except Safari, sadly) extension from my colleague David Rousset.
The Best Of The Internets
Creating One Browser Extension For All Browsers: Edge, Chrome, Firefox, Opera, Brave And Vivaldi
Microsoft opens up on Windows telemetry, tells us most of what data it collects

A while back I joined a Twitter conversation between Jared Spool and Jake Archibald about privacy policies and shared my enthusiasm for how delicately Microsoft (my employer) treats any data it collects. I’m so happy to see Microsoft starting to open up a little more about what telemetry data they are collecting and how it is actually being used to make Windows better. To wit:
[C]ertain combinations of audio drivers and audio hardware were resulting in audio that was broken or missing certain special effects. The telemetry data enabled the exact pairings of drivers and hardware that had issues to be pinpointed, enabling a fix to be developed.
Announcing free Microsoft Edge testing in partnership with BrowserStack

Great news if you’re on a Mac!
You can test Microsoft Edge on the Windows 10 Anniversary Update (EdgeHTML 14) starting today. EdgeHTML 15 will be available in the Windows 10 Creators Update starting on April 11, 2017, and will come to BrowserStack in the following weeks.
Achieving 100 / 100 on Google PageSpeed Insights (using Jekyll)
This post contains a few interesting tips and tricks for improving the speed of your sites, Jekyll or otherwise.
Internationalize your keyboard controls

A bit on the problem created by the present state of keyboard commands in JavaScript and how KeyboardEvent.key seeks to address the issue.
Scrolling on the web: A primer

Everything you could possibly want to know about how browsers handle scrolling.
Keep your branch clean with fixup and autosquash
A nice roll-up of how to declutter your Git commit history when you notice a bug or typo right after committing it.
Hassle-free Full Bleed with not()
The :not() pseudo-class selector has pretty solid support. This could prove handy.
Digital Privacy at the U.S Border

Following on my earlier post, here’s a pocket guide to border crossing from the Electronic Frontier Foundation.
How to Debug

While focused on debugging video games, the broader lessons of this post apply to debugging any form of interface.