CSS Wizardry

@css_wizardry@robot.villas

Harry Roberts on web performance, site speed, CSS architecture, and front-end development.

Source: https://csswizardry.com/feed.xml

Homepage: https://csswizardry.com

Posts

100

Posts

Web-Perf Wednesday 012 - Return to the Unresolved Trace #WebPerformance #CSS #FrontEnd
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Oct 7, 2026
Web-Perf Wednesday 011 - SpeedCurve's INP Observer Missed Its Threshold #WebPerformance #CSS #FrontEnd
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Sep 30, 2026
Web-Perf Wednesday 010 - Safari Keeps Scrolled Content in Place #WebPerf #CSS #Frontend
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Sep 23, 2026
Web-Perf Wednesday 009 - CrUX Makes Ad Weight Public #WebPerformance #CSS #FrontEnd
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Sep 16, 2026
Web-Perf Wednesday 008 - Good INP Rates Keep Falling #WebPerformance #CSS #FrontEnd
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Sep 9, 2026
Web-Perf Wednesday 007 - Chrome Makes Busy Workers Measurable #WebPerformance #CSS #DevTools
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Sep 2, 2026
Web-Perf Wednesday 006 - Faster Browser Releases Change Your RUM Population #WebPerformance #CSS #FrontEnd
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Aug 26, 2026
How to Find an Exact Gmail Thread with Codex or Claude #AI #Productivity #WebDev
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Aug 20, 2026
Unattributed Navigation Overhead (UNO) Is Underrated #CSS #WebPerformance #FrontEnd
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Aug 20, 2026
Web-Perf Wednesday 005 - RUM Needs More Than a Percentile #WebPerformance #Frontend #CSS
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Aug 19, 2026
Introducing LUX Sidecar: Your SpeedCurve Companion #WebPerformance #CSS #FrontEnd
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Aug 18, 2026
When Safari's 'Ignore Cache' Ignored Cache-Control #WebPerformance #CSS #Browser
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Aug 17, 2026
Web-Perf Wednesday 004 - A Quiet Week Is Time to Investigate #WebPerformance #CSS #FrontEnd
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Aug 12, 2026
Web-Perf Wednesday 003 - Native SPA Metrics Have Arrived #WebPerformance #CSS #Frontend
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Aug 5, 2026
Web-Perf Wednesday 002 - The Metrics Don't Tell the Whole Story #WebPerformance #Frontend #CSS
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Jul 29, 2026
Measuring Component Performance with the Container Timing API #WebPerformance #CSS #FrontEnd
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Jul 26, 2026
Low- and Mid-Tier Mobile for the Real World (2026) #WebPerformance #MobileDev #Frontend
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Jul 21, 2026
Web-Perf Wednesday 001 - SPAs Are Finally Becoming Measurable #WebPerformance #Frontend #SPAs
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Jul 15, 2026
Front-End's Missing Metric: The TBT Window #WebPerformance #Frontend #CSS
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Jun 1, 2026
Meet Your Users Where They Are with Obs.js #WebPerformance #CSS #JavaScript
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May 12, 2026
Better Browser Caching with No-Vary-Search #WebPerformance #BrowserCaching #FrontEndDev
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May 7, 2026
font-family Doesn't Fall Back the Way You Think #CSS #WebDev #Performance
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Apr 10, 2026
What Is CSS Containment and How Can I Use It? #CSS #WebPerformance #FrontEnd
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Apr 2, 2026
When All You Can Do Is All or Nothing, Do Nothing #WebPerformance #CSS #FrontEnd
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Mar 30, 2026
Obs.js: Context-Aware Web Performance for Everyone #WebPerformance #CSS #FrontEnd
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Aug 27, 2025
Low- and Mid-Tier Mobile for the Real World (2025) #WebDev #Performance #Mobile
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Aug 18, 2025
The Fastest Site in the Tour de France #WebPerformance #CSS #FrontEnd
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Jul 27, 2025
Making Sense of the Performance Extensibility API #WebPerformance #CSS #FrontEnd
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Jul 25, 2025
Why Do We Have a Cache-Control Request Header? #WebPerformance #HTTP #Caching
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Mar 7, 2025
HTML Is Not a Programming Language... #WebDev #HTML #Frontend
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Feb 10, 2025
Build for the Web, Build on the Web, Build with the Web #WebDevelopment #CSS #Performance
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Jan 23, 2025
Licensing Code on CSS Wizardry #CSS #WebDevelopment #OpenSource
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Dec 4, 2024
A Layered Approach to Speculation Rules #WebPerformance #CSS #FrontEnd
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Dec 2, 2024
Designing (and Evolving) a New Web Performance Score #WebPerformance #CSS #FrontEnd
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Nov 26, 2024
Core Web Vitals Colours #WebPerformance #CSS #FrontEnd
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Nov 18, 2024
The Ultimate Contract Templates for Tech Consultants: Protect Your Business and Get Paid #WebDev #Consulting #Business
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Oct 1, 2024
Optimising for High Latency Environments #WebPerformance #CSS #FrontEnd
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Sep 16, 2024
Cache Grab: How Much Are You Leaving on the Table? #WebPerformance #Cache #FrontEnd
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Aug 19, 2024
blocking=render: Why would you do that?! #WebPerformance #CSS #FrontEnd
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Aug 14, 2024
Correctly Configure (Pre) Connections #WebPerformance #CSS #FrontEnd
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Dec 9, 2023