Blog

Measurements, and what they mean

Findings from real runs, with the numbers and the sources. No listicles.

• 16 September 2026

  AI crawlers do not run your JavaScript. Here is what that means for a news site.

  On one national news site, 78% of the words on the gallery template and 51% on the article template appear only after JavaScript runs. The crawlers behind ChatGPT, Claude and Perplexity never see them.

• 16 September 2026

  Your site is fast on your laptop. Real users wait two seconds for the first byte.

  Lab tools measure from a developer's machine. Google ranks on what real users experience. On one site the two disagreed by a factor of sixty — and only one of them counts.