Last Updated: November 21, 2025
Metrics
| Metric | Target |
|---|---|
FCP
|
<2s |
LCP
|
<2.5s |
CLS
|
<0.1 |
TBT
|
<300ms |
Commands
lighthouse https://example.com
Lab run
web-vitals report
RUM
preload key
Asset priority
Tips
Lazy-load offscreen content, compress assets, and audit third-party scripts.
💡 Pro Tip:
Combine lab (Lighthouse) and field (RUM) data and correlate with deployments.