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Leak library

PERF_TTFB_001● MediumPerformance

The server is slow to respond

By Leakly · Published · Updated

01The problem

Time to first byte is high enough to delay everything that follows it.

Server latency is a floor under every other performance improvement. Nothing on the page can render before it is paid.

02How Leakly detects it

A structural fact counted in the rendered page, or a measurement against a threshold. Confidence ceiling for this detector family: 96%.

03Proof required

  • A measured number, with its unit and the threshold it crosses.

Without it, the finding is not reported.

04How to fix it

Shorten the server's response time.

  1. Cache the page or its slowest query at the edge.
  2. Profile the request path: the delay is usually one call, not the whole stack.

Each audit that finds this leak includes the exact element, a suggested change and, for copy, a rewrite you can paste.

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Scripts are failing on the conversion pathPERF_ERROR_001The conversion page takes too long to show its main contentPERF_LCP_001The layout moves while the page is loadingPERF_LAYOUT_001
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