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Technical SEO FAQ · Core Web Vitals, Performance & HTTP

How would you diagnose poor LCP?

Start by determining what the LCP element is.

Typical candidates include:

  • hero image;
  • large heading;
  • banner;
  • video poster.

Then investigate:

  • server response time;
  • render-blocking resources;
  • image discovery;
  • image format and size;
  • preload behavior;
  • client-side rendering;
  • third-party scripts.

Separate the problem into:

TTFB → resource load delay → resource load duration → render delay

Use real-user data to understand production behavior.

Sources

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