Website performance
Website performance
Most speed advice is a list of tactics with no way of knowing which one applies to you. These guides start with measurement, so you fix the thing that is actually slow.
Website performance
Core Web Vitals, caching, CDNs and measurement.
What is a CDN, and do you need one?
A CDN moves your files closer to your visitors. Whether that helps depends entirely on where your visitors are.
3 min read
What is TTFB, and why does it matter?
Time to first byte is the one metric that separates "my hosting is slow" from "my website is heavy".
3 min read
Go deeper
Test your speed
Core Web Vitals explained in terms of what causes each one.
What is TTFB?
The single number that separates a hosting problem from a site problem.
Do you need a CDN?
What a CDN fixes, and the common case where it changes nothing.
When to upgrade the server
The signals that mean you have genuinely outgrown shared hosting.
Not sure what you need?
The Hosting Finder asks five questions and explains every match.