Performance
Why your site crawls on hotel wifi, and the four fixes that work
Latency ruins a page long before bandwidth does. Ship these four changes and most sites feel instant again by the next deploy.
Category
Performance
Field data over lab data, and one change at a time. Mostly about finding which stage of the pipeline owns your milliseconds.
12 posts1 authorLast post 1 month ago
Performance
Onboarding juniors: what actually helps
A first pull request stalls on setup, not on skill. Pair for a week, ship something small on day two, and finally write the README you keep meaning to.
Performance
INP is not FID with a new name
FID measured the first interaction. INP measures the worst one, and that is a completely different bar to clear.
Performance
The image formats worth the conversion cost
AVIF is smaller, slower to encode, and not always the right answer. Here is where each format earns its place.
Performance
Third-party scripts: an audit that takes an hour
List every tag, name its owner, and delete the two nobody can account for. That is the whole method.
Performance
Why your LCP element is not what you think
Teams optimise the hero image for a fortnight and discover the LCP element was a paragraph of text the whole time.
Performance
Lazy loading everything is a mistake
A lazy attribute on the hero image delays the one thing the metric is measuring.
Performance
Compression: brotli, gzip and the flags nobody sets
Brotli at its default level is barely better than gzip. At level 11 for static files it is a different story.