How I measure

This check measures one page: the address you enter, usually your homepage. I load that page from my server without running JavaScript, as many crawlers do. If your server turns away my first visit by dropping the connection, I try once more with a browser-like identification that still says "wwworthit-check". I read the HTML, your robots.txt, your sitemap, the headers and your domain's DNS.

Speed, accessibility and best practices are measured by Google PageSpeed Insights (Lighthouse), on a simulated phone and computer. Real visitor figures come from Google's Chrome UX Report, over the last 28 days. If Google has too few visitors for your site, I say so.

What I recognise and what I measure are not the same. Booking engines, analytics and cookie tools I recognise from a fixed list. If something is not on it, or only loads through JavaScript, I may not see it. That is why I write "I found no" and not "you have no".

Every finding gets one of four statuses: Fine, Could be better, Problem or Not measured. I give no overall score, because such a number hides more than it tells. The order of "Where I would start" is my own fixed ranking of what weighs most for most businesses.

Google thresholds (Core Web Vitals): loading up to 2.5 s is good and above 4 s poor, responding up to 200 ms good and above 500 ms poor, shifting up to 0.1 good and above 0.25 poor. I hold the lab loading time against the same thresholds. Lighthouse scores: 90 and up good, below 50 poor. A lab measurement varies: the same page can come out a few points, sometimes more, higher or lower next time. Real visitor figures are more stable.

My own rules of thumb, not Google rules: a homepage up to 2 MB I call light, above 5 MB heavy. A title of 15 to 65 characters and a description of 70 to 170 characters. Fewer than 250 characters of text without JavaScript I call little, from 600 enough. HSTS from six months, and 3 of the 4 security headers I call fine.

I do not use AI to write your report. Every sentence is fixed in advance and depends on what I measure.