Demo data. Page speed scores are real (Smashing Magazine's actual PSI results, refreshed weekly). Repository changes shown below are illustrative, pulled from a demo repo to showcase the GitHub PR overlay feature.

PageSpeed Insights

10 URLs, both strategies. Loading snapshots…

Mobile site averages
Score colors: 90-100 good   50-89 needs improvement   0-49 poor.
Core Web Vitals targets: LCP < 2.5s, CLS < 0.1, TBT < 200ms (lab proxy for INP).