Paweł Pokrywka's Lab

My conclusions after using Signed Exchanges on my website for 2 years

Instant page loads for Google visitors using Signed Exchanges—part 10 (final)

Oct 9

Overall impact of Signed Exchanges on page load speed—a data-driven study

Boosting page speed for Google traffic with Signed Exchanges (part 9 of 10)

Oct 9

September 2025

How fast do websites load from Google Search? Comparing various prefetching and on-demand load methods.

Optimizing page load performance for Google-referred users with Signed Exchanges (part 8 of 10)

Sep 13

15 ways your website loads from Google Search and how to measure each one

How to improve page load time for Google visitors using Signed Exchanges (part 7 of 10)

Sep 3

April 2025

Stretching Google's prefetching

Making Chrome play a 19 MB video while "offline"

Apr 9

March 2025

Other causes of Signed Exchanges errors

From various limits to global outages—how to tackle SXG challenges (part 6 of 10)

Mar 3

1

February 2025

Debugging mutable subresources: a detective story

The bizarre case of Signed Exchanges: how frequent deployments increased the error rate and revealed hidden cache poisoning (part 5 of 10)

Feb 21

The mystery of mutable subresources in Signed Exchanges

What they are, how they break caching, and how to fix them (part 4 of 10)

Feb 11

1

January 2025

Understanding CORS errors in Signed Exchanges

Learn debugging techniques and why the all-or-nothing principle makes these errors critical (part 3 of 10)

Jan 31

Prefetching subresources with Signed Exchanges

How to make your website load instantly for Google-referred users (part 2 of 10)

Jan 13

2

2

How I brought LCP down to under 350 ms for Google-referred users on my website

Exploring the techniques I used to optimize performance on a high-traffic website

Jan 8

8

2

August 2023

Create a Ruby gem with Zeitwerk as a development-only dependency (tutorial)

Forget require statements and make your gem lightweight at the same time

Aug 20, 2023