Performance
The Performance score group: page speed and loading behavior
Performance is one of the four score groups on every report. It measures page speed and loading behavior: Core Web Vitals hints (LCP, CLS, INP), render blocking, resource weight, caching, compression, and delivery.
The group is a single category with 29 rules. Most run locally against the HTML and response headers; a few need browser rendering for measurements only a real browser can take.
Category
Disable all performance rules
squirrel.toml
toml[rules]
disable = ["perf/*"]See the full rules reference for the other score groups.