GTmetrix Performance Blog
News, updates and guides on GTmetrix and general web performance
Category: Optimization Explained
Get a better understanding of common web performance concepts.
What is CrUX and Why Should I Care?
We explain what CrUX data is and why any website owner should care about it.
What to Look for in a Solid WordPress Host
We explain the key things to look for in a dependable and high-performing WordPress host.
Interaction to Next Paint (INP) Explained
We explain what Interaction to Next Paint (INP) is, how it impacts performance, and why GTmetrix doesn’t track it (yet).
Field vs Lab (Synthetic) Data – How Do They Compare?
We explain the key differences between field and lab data and how you should interpret them.
What Causes Bad CLS and How to Fix it?
We explain all the different causes of a poor CLS score and how to fix them.
