Harry Roberts

48.6K posts

Harry Roberts

@csswizardry

🚀 Independent Web Performance Consultant • Speaker • Google Developer Expert, Web Performance • Accepting new clients • harry.is/for-hire

Leeds, England

csswizardry.com

Joined March 2009

Pinned
Harry Roberts
@csswizardry
Apr 18, 2023
📣 Today I am incredibly excited to launch SENTINEL, a new service designed to help companies stay on top of site-speed with minimal friction.
Sentinel: Your Web-Performance Watchman – CSS Wizardry
From csswizardry.com
Harry Roberts
@csswizardry
Aug 18
For all you @SpeedCurve fans, meet LUX Sidecar:
csswizardry.com
Introducing LUX Sidecar: Your SpeedCurve Companion – CSS Wizardry
LUX Sidecar is a small SpeedCurve RUM plugin that adds browser and navigation context to your real-user performance data.
Harry Roberts
@csswizardry
Aug 17
🐛 I spotted an interesting but vague bug fix in STP 250. I dug deeper. More caching goodies for you here:
csswizardry.com
When Safari’s ‘Ignore Cache’ Ignored Cache-Control – CSS Wizardry
Safari Technology Preview 250 fixed a subtle Web Inspector bug that overwrote page-authored Cache-Control request headers when the resource cache was disabled.
Harry Roberts
@csswizardry
Aug 16
TIL that supporting platforms/fonts will automatically turn fractions delimited by a proper fraction slash (`⁄` vs `/`) into properly formatted fractions but still with the original number of characters. The following is three separate glyphs: 1⁄2.
Harry Roberts
@csswizardry
Aug 16
TIL @__treo’s treo.sh/rtt is live data! I always thought it was a one-off research piece 🤯 You’re too good to us, @alekseykulikov_.