Instacalc Status

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Embed render checks · post-deploy + daily

No headless run recorded yet.

Performance · Lighthouse-style score + Core Web Vitals · daily

No perf run recorded yet.

Score is ~approximate: Lighthouse's log-normal curves + weights over FCP, LCP, TBT, CLS (≈90% of the formula; Speed Index's 10% is redistributed). Measured at a mobile viewport (390×844) so CLS is reproducible (it's strongly viewport-dependent). Lab numbers from one Cloudflare datacenter — directional, not the exact PageSpeed number.

⚠️ TBT over-reads here. The datacenter's cold Chromium inflates Total Blocking Time ~10-25× vs a real device (measured: explore 462ms here vs 17ms on a real cold load). So an amber/red TBT chip below is usually a measurement artifact, not a slow page — trust LCP and CLS as the real signals. TBT is most useful for spotting a big jump over time, not its absolute value.

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