If you ever tried optimizing your website performance, you probably run your web page through Google Page Speed and got several tips on what can be improved to make your site faster.

Learn how to improve render times with critical CSS technique.

Refactored codebase should result in similar or improved performance and improved codebase health. After all, if deploying the refactored codebase causes loading or performance issues, it will result in less traffic and revenue.

Learn why tools that monitor Core Web Vitals metrics may report different numbers, and how to interpret those differences.

This week I ran into an interesting class of problem that—in hindsight—could use a much better workflow. Does it exist?

The relaunched website also sees ad viewability of over 75%, bounce rates reduced by 50%, and page views up by 27%.

Performance profiling for Rails, made simple 🦔

Concretely, our analysis shows that more eagerly loading images within the initial viewport—while liberally lazy-loading the rest—can give us the best of both worlds: fewer bytes loaded and improved Core Web Vitals.

Learn about our thoughts on measuring responsiveness and give us feedback.