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request metrics

Understanding Lighthouse: Speed Index

Feb 12, 2026 By Todd H. Gardner In Request Metrics
You run Lighthouse and it tells you your Speed Index is bad. But the page looks like it loads fine. You see stuff on screen early. So why is Lighthouse acting like your site is a sloth? Speed Index is a “how fast does this page visually fill in” metric. Not “when did the first pixel show up” (that’s FCP) and not “when did the main content show up” (That’s LCP). It’s the whole above-the-fold loading experience, averaged over time.
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Understanding Lighthouse: First Meaningful Paint

Feb 5, 2026 By Todd H. Gardner In Request Metrics
You’re reading an old performance article, and it keeps talking about “First Meaningful Paint.” You search for how to improve it, but every tool gives you different advice. Some don’t mention it at all. What’s going on? Here’s the short answer: First Meaningful Paint is dead. Google deprecated it in Lighthouse 6.0 back in 2020 and removed it completely in Lighthouse 13. If you’re still trying to optimize for FMP, you’re chasing a ghost.
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Understanding Lighthouse: Largest Contentful Paint

Jan 22, 2026 By Todd H. Gardner In Request Metrics
Your hero image takes 5 seconds to show up. Your headline sits invisible while JavaScript churns away. Your users? They’ve already hit the back button. That’s the cost of a slow Largest Contentful Paint, and it’s killing your conversions and search rankings. LCP is one of Google’s Core Web Vitals, which means it directly impacts how Google ranks your website. A slow LCP doesn’t just frustrate users, it actively hurts your SEO.
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New Option: Preserve URL Casing

Dec 22, 2025 By Todd H. Gardner In Request Metrics
Most web servers treat URLs as case-insensitive. A request to /About-Us lands on the same page as /about-us or /ABOUT-US. So when Request Metrics captures your traffic, we normalize all URLs to lowercase to prevent these duplicates from cluttering your reports. But not every system works that way. Some web frameworks (looking at you, Node and Python) treat URL casing as meaningful. /User/Profile and /user/profile might be completely different routes.
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Why You Need Real User Monitoring to Really Understand Your Web Performance

Jun 5, 2025 By Todd H. Gardner In Request Metrics
Great Lighthouse scores, but your site is still slow. Sound familiar? You’ve run PageSpeed Insights, Request Metrics, and every other synthetic test you can find. Your scores look great. But your analytics shows users bouncing, conversions dropping, and complaints about “slow pages.” What’s going on? The answer is simple: synthetic testing only tells you how your site performs in a test, not how it performs for real users in the real world.
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The Importance of TTFB for Web Performance #coding #frontend #programming #chromedevtools

Apr 3, 2025 By Request Metrics In Request Metrics
Discover why Time to First Byte (TTFB) is crucial for website speed in this essential Concepts of Web Performance tutorial with Todd Gardner from Request Metrics. Perfect for junior web developers learning performance optimization, this concise guide explains exactly what TTFB measures—the critical waiting period between a user's initial request and your server's first response. Learn how TTFB encompasses redirects, DNS lookups, SSL negotiations, server processing time, and geographical distance, making it the first blocking step in your page's loading sequence.
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What is Time to First Byte (TTFB) - The Concepts of Web Performance

Apr 2, 2025 By Request Metrics In Request Metrics
Discover why Time to First Byte (TTFB) is crucial for website speed in this essential Concepts of Web Performance tutorial with Todd Gardner from Request Metrics. Perfect for junior web developers learning performance optimization, this concise guide explains exactly what TTFB measures—the critical waiting period between a user's initial request and your server's first response. Learn how TTFB encompasses redirects, DNS lookups, SSL negotiations, server processing time, and geographical distance, making it the first blocking step in your page's loading sequence.
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Monitoring Time to First Byte TTFB with the Performance Observer API #coding #frontend #programming

Apr 2, 2025 By Request Metrics In Request Metrics
Discover why Time to First Byte (TTFB) is crucial for website speed in this essential Concepts of Web Performance tutorial with Todd Gardner from Request Metrics. Perfect for junior web developers learning performance optimization, this concise guide explains exactly what TTFB measures—the critical waiting period between a user's initial request and your server's first response. Learn how TTFB encompasses redirects, DNS lookups, SSL negotiations, server processing time, and geographical distance, making it the first blocking step in your page's loading sequence.
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