# Website Bottleneck Finder Identifies Requests Delaying FCP and LCP

DevFeed: [Website Bottleneck Finder Identifies Requests Delaying FCP and LCP](<https://devfeed.tech/articles/find-hidden-render-blocking-requests-with-the-website-bottleneck-finder-49258.md>)

Original publisher: [Read original article](<https://www.debugbear.com/blog/website-bottleneck-finder>)

Author: Joe Coulson

Published: 2026-07-29T00:00:00Z

Content type: article

Language: en

Sources: [DebugBear Blog](<https://devfeed.tech/sources/debugbear-blog.md>)

Topics: [Core Web Vitals](<https://devfeed.tech/topics/core-web-vitals.md>), [Website](<https://devfeed.tech/topics/website.md>), [developer tooling](<https://devfeed.tech/topics/developer-tooling.md>), [browser](<https://devfeed.tech/topics/browser.md>), [Chrome](<https://devfeed.tech/topics/chrome.md>)

Tags: [chrome](<https://devfeed.tech/tags/chrome.md>), [code-splitting](<https://devfeed.tech/tags/code-splitting.md>), [core-web-vitals](<https://devfeed.tech/tags/core-web-vitals.md>), [devtools](<https://devfeed.tech/tags/devtools.md>), [lcp](<https://devfeed.tech/tags/lcp.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [website](<https://devfeed.tech/tags/website.md>)

## AI overview

The Website Bottleneck Finder analyzes page requests and repeatedly reruns page loads while delaying different resources to identify those that significantly affect First Contentful Paint and Largest Contentful Paint. It addresses performance bottlenecks that Chrome's standard render-blocking classification may miss, including late-loading images, data-fetching scripts, and code-split JavaScript chunks.

## Source excerpt

Chrome's render-blocking label doesn't always fully illustrate which resources are impacting a page's First Contentful Paint (FCP), Largest Contentful Paint (LCP) or H1-visible metrics. We recently introduced our website bottleneck finder tool to help you find resources on your page that might be impacting these metrics but are not considered blocking by Chrome.