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LCP by bot type

LCP by bot type without noise

Written by Vasil Dachev
Updated over a week ago

What is LCP by bot type

LCP by bot type shows how the Largest Contentful Paint (LCP) across different crawler categories - such as Googlebot, Bingbot, and other search or social crawlers.

Instead of looking only at human traffic, this insight shows how fast your pages render for bots that index, rank, and preview your content. Since bots don’t behave exactly like real users (different user agents, rendering logic, crawl budgets), their LCP can vary significantly.

If your site loads slower for certain bots, it may impact:

  • How efficiently your pages are crawled

  • How frequently they are indexed

  • How quickly updates are reflected in search results



LCP by bot type sample


Should you worry

In a healthy scenario, LCP remains stable across major bot types. That means:

  • Googlebot sees the same fast render as Bingbot

  • Rendering is not blocked by bot detection systems

  • Caching behaves consistently regardless of user agent

This suggests your infrastructure treats crawlers efficiently and does not accidentally degrade performance for them.

You generally don’t need identical LCP across every bot — but you do want consistency across major search engines.

Healthy signals:

  • Stable LCP across Google and Bing

  • No dramatic spikes for specific crawlers

  • Performance remains strong during crawl peaks

Unhealthy signals:

  • Googlebot LCP significantly slower than real users

  • One bot consistently worse than others

  • Large variance that correlates with crawl activity

If Googlebot sees slower LCP, you should question why:

  • Is bot traffic bypassing CDN cache?

  • Is server-side rendering behaving differently for bots?

  • Are security or bot-management layers throttling legitimate crawlers?

These differences often hide in infrastructure rules — not frontend code.

Unhealthy LCP by bot type

Common causes of unhealthy LCP by bot type:

  1. Cache bypass for bots
    Some setups unintentionally skip CDN caching for crawler user agents.

  2. Dynamic rendering differences
    If bots receive pre-rendered HTML while users get CSR, rendering paths may differ.

  3. Bot protection tools misfiring
    Security layers sometimes delay even legitimate crawlers.

  4. Crawl spikes overwhelming origin
    Heavy crawl activity can temporarily degrade server response time.

If one bot shows worse LCP than others, dig deeper. That asymmetry almost always points to configuration differences.

Resolving unhealthy LCP by bot type

Go-to action plan to resolve an unhealthy LCP by bot type:

  1. Ask Uxi to analyze your LCP by bot type values and suggest improvements.

  2. Use Filters to see if slowdowns align with specific geographies, pages, or device types.

  3. Simulate LCP of the suspected insight to see if fixing it will resolve the slow LCP by bot type. If yes, this is where the resolution focus should be.

  4. Once you’ve improved LCP, set an alert to be the first to know if it starts worsening again.

Try it yourself

Explore how your website performs across different bot types using real crawl data.

If bots experience slower LCP than users, your SEO visibility could be quietly affected - even if your Core Web Vitals look healthy on the surface.

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