Performance Budgets, Pragmatically

A way to define performance budgets for any website.

Real-World Effectiveness of Brotli

Is it worth to move over from Gzip?

The Fastest Google Fonts

Let’s find a snippet for loading Google Fonts at lightning speed.

Site-Speed Topography

A holistic way to visualize performance across an entire site.

“If you’re too expensive, you’ll find that out soon enough. If you’re too cheap, you’ll probably never find it out, and that’s the problem.”

Optimizing Largest Contentful Paint

Insights into the web performance metric, tricks, pitfalls, bugs.

Measure what you impact, not what you influence

Advice for anyone making performance-facing changes.

Critical CSS? Not so fast!

The popular performance technique may be more questionable than you think.

Speeding up async snippets

Do’s and don’ts when working with async snippets of third parties.

Why not document.write()?

How script injection using document.write() hurts web performance.

In defence of DOM­Content­Loaded

'Outdated' web performance metrics can still be very useful.

Core Web Vitals for search engine optimization

Google’s performance metrics demystified in 400 (or 5,500+) words.

The ultimate low-quality image placeholder technique

A cutting-edge remake of a decade-old technique.

What Is the maximum max-age?

Can you cache a file in the browser ‘forever’?

Correctly configure (pre) connections

A line of HTML can make pages noticeably faster.