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A Practical Speed Checklist for Shopify Product Pages

A Practical Speed Checklist for Shopify Product Pages

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2 min read
Why "defer" breaks WordPress sites (and how to test it before your visitors notice)

Why "defer" breaks WordPress sites (and how to test it before your visitors notice)

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3 min read
How we measured 4,562 HVAC company websites with Lighthouse, and which runs we threw away

How we measured 4,562 HVAC company websites with Lighthouse, and which runs we threw away

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6 min read
INP explained: why Lighthouse cannot measure it, and how to find the pages that fail it

INP explained: why Lighthouse cannot measure it, and how to find the pages that fail it

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8 min read
Lighthouse used to punish useful preloads. Framer spent a year fixing that.

Lighthouse used to punish useful preloads. Framer spent a year fixing that.

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7 min read
7 Shopify Liquid Fixes That Cut LCP on Real Stores

7 Shopify Liquid Fixes That Cut LCP on Real Stores

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4 min read
There is no fastest AI API: 100 days of probing 44 providers from 4 regions

There is no fastest AI API: 100 days of probing 44 providers from 4 regions

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3 min read
Shipping Chinese web fonts at ~100 KB per page instead of 14 MB

Shipping Chinese web fonts at ~100 KB per page instead of 14 MB

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4 min read
How we cut image weight on a Next.js store product grid without losing quality

How we cut image weight on a Next.js store product grid without losing quality

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3 min read
Static Site Performance Optimization Checklist (2026)

Static Site Performance Optimization Checklist (2026)

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6 min read
Find the Click That's Failing INP: web-vitals Attribution in 20 Lines

Find the Click That's Failing INP: web-vitals Attribution in 20 Lines

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3 min read
How I Reduced My Blog's CLS from 0.37 to Under 0.1: A Real-World Case Study

How I Reduced My Blog's CLS from 0.37 to Under 0.1: A Real-World Case Study

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Comments 2
6 min read
An AVIF quality ladder in sharp: q30 to q80, bytes and time

An AVIF quality ladder in sharp: q30 to q80, bytes and time

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4 min read
How I Got a WordPress News Site to a 96 Mobile PageSpeed Score Without Delaying JavaScript

How I Got a WordPress News Site to a 96 Mobile PageSpeed Score Without Delaying JavaScript

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2 min read
The sizes attribute: how the browser picks a srcset candidate

The sizes attribute: how the browser picks a srcset candidate

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5 min read
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