#WebPerfWednesday 11 is out, in which we fix a longstanding bug in @speedcurve.com, and Safari gets network throttling! csswizardry.com/2026/09/web-...
Web-Perf Wednesday 011 – SpeedCurve’s INP Observer Missed Its Threshold – CSS Wizardry
A long-standing lux.js bug left Event Timing on its 104 ms default, while browser releases improve testing and rendering performance.
csswizardry.com
September 30, 2026 at 9:49 AM
#WebPerfWednesday 11 is out, in which we fix a longstanding bug in @speedcurve.com, and Safari gets network throttling! csswizardry.com/2026/09/web-...
🗓️ Published! This week’s #webPerfWednesday looks at Chome’s new release cadence, Unattributed Navigation Overhead, and soft navs in DevTools: csswizardry.com/2026/08/web-...
Web-Perf Wednesday 006 – Faster Browser Releases Change Your RUM Population – CSS Wizardry
Chrome and Firefox are moving to two-week releases, making browser cadence part of how teams interpret RUM and plan performance testing.
csswizardry.com
August 26, 2026 at 11:55 AM
🗓️ Published! This week’s #webPerfWednesday looks at Chome’s new release cadence, Unattributed Navigation Overhead, and soft navs in DevTools: csswizardry.com/2026/08/web-...
#webPerfWednesday no. 5 is live! We look at DevTools bug fixes that landed in preview versions of Chrome and Safari, as well as new streamable `fetch` uploads (confusing): csswizardry.com/2026/08/web-...
Web-Perf Wednesday 005 – RUM Needs More Than a Percentile – CSS Wizardry
LUX Sidecar adds context to RUM, while browser-tool fixes show why measurement conditions and small debugging details matter.
csswizardry.com
August 19, 2026 at 8:20 AM
#webPerfWednesday no. 5 is live! We look at DevTools bug fixes that landed in preview versions of Chrome and Safari, as well as new streamable `fetch` uploads (confusing): csswizardry.com/2026/08/web-...