The SiteVitals blog.

How do you know what matters on PageSpeed Insights? And how do you read a Lighthouse report?

Who needs to know, about what, how quickly, and do they really need to know at 3am?

Often when something goes wrong on a website, you wish you could look back and see what changed. Now you can.

This report keeps a running record of what each monitored page says and how it's put together, so you can see what's changed and when - even if you weren't the one who changed it.

This blog post goes through what the Security report checks, what each thing means in normal words and when a flag deserves your attention.

How to read your results on the SEO and AI visibility dashboard.

Once a month, SiteVitals members can send their website questions to Lisa or Tom and get a proper, private answer by email from people who’ve been looking after websites for over 20 years. Here’s how the Ask Me Anything clinic works, who can take part, and what you can (and can’t) ask.

The new look is part of a wider update to make SiteVitals clearer, friendlier and easier to understand, especially if you’re not especially technical.

Last week we wrote about why we stopped reporting weekly performance deltas. A single week-on-week number was hiding what actually happened in between, so we replaced it with a 7-day score series and let the digest reason over the full week instead of two snapshots. That was a step in the right direction, but not the whole answer.

We’ve improved SiteVitals performance reporting so it does more than tell you a metric is slow. It now helps explain why, what is involved, and what to investigate first.

A single week-on-week number sounds precise. For PageSpeed in particular, the results over the week can vary hugely. Taking a single snapshot and deriving performance off the back of 2 values can be very missleading and misrepresent the actual situation.