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All things speed and scalability on the web.

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Image compression in Chrome: JPEG XL returns with a Rust decoder

Image compression in Chrome: JPEG XL returns with a Rust decoder

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8 min read
Brotli and Gzip Compression: Shrink Text Assets Without Breaking PageSpeed Scores

Brotli and Gzip Compression: Shrink Text Assets Without Breaking PageSpeed Scores

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11 min read
Five boring fixes I made before sending anyone to my landing page

Five boring fixes I made before sending anyone to my landing page

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2 min read
Core Web Vitals: What Cloudflare's BEACON Data Says to Fix First

Core Web Vitals: What Cloudflare's BEACON Data Says to Fix First

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7 min read
Why is PageSpeed Insights worse than my local Lighthouse score?

Why is PageSpeed Insights worse than my local Lighthouse score?

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6 min read
Building a Floating Mini-Timer with Document PiP

Building a Floating Mini-Timer with Document PiP

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4 min read
Build a Zero-Drift Web Timer

Build a Zero-Drift Web Timer

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4 min read
Three of our 38 pages tell every cache not to store them, and all three are the ones with a price on

Three of our 38 pages tell every cache not to store them, and all three are the ones with a price on

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6 min read
How to Choose Image Conversion or Compression in Python — Property Photos

How to Choose Image Conversion or Compression in Python — Property Photos

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6 min read
What Is Automated Web Performance Monitoring?

What Is Automated Web Performance Monitoring?

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9 min read
Why does CrUX say no data for my client site?

Why does CrUX say no data for my client site?

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6 min read
Why your INP can fall after one more click

Why your INP can fall after one more click

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3 min read
Core Web Vitals Remediation: Fixing LCP, INP & CLS at the Root

Core Web Vitals Remediation: Fixing LCP, INP & CLS at the Root

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4 min read
The 129 elements that only existed once JavaScript loaded

The 129 elements that only existed once JavaScript loaded

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4 min read
I built a prefetcher that knows when to stop

I built a prefetcher that knows when to stop

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9 min read
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