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Request Metrics @requestmetrics.com · 17/06/2026

Lighthouse tells you what a page can do. CrUX shows a slice. WebPageTest benchmarks a single run. None of them show what your users are actually experiencing. Eroan Boyer: "There is no choice. You have to use RUM." #WebPerformance #RUM

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Request Metrics @requestmetrics.com · 10/06/2026

The dashboard was flat for weeks. Then LCP spiked. That moment is exactly what weekly RUM monitoring is for. Not just knowing something changed, but being able to trace when, where, and why. #CoreWebVitals #LCP

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Request Metrics @requestmetrics.com · 03/06/2026

Green across the board does not mean no problems. It means no problems on average. Edge cases hide in the aggregate. Specific devices, referral sources, page groups. Real user data is how you find them. #WebPerformance #RUM

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Request Metrics @requestmetrics.com · 27/05/2026

CLS is one of the hardest metrics to debug. You see the score. You don't know what's moving. @eroan.bsky.social found the root cause, the specific element, on a new client site in 10 minutes with Request Metrics. #CoreWebVitals #CLS

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Request Metrics @requestmetrics.com · 22/05/2026

Synthetic tools show what a page can do. RUM shows what your users actually get. @eroan.bsky.social, in 10 years in web performance: "There is no choice. You have to use real user monitoring." #WebPerformance #RUM

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Request Metrics @requestmetrics.com · 20/05/2026

Web performance agencies bill by the hour. Every hour spent hunting a root cause is one not spent fixing. @eroan.bsky.social found a CLS cause in 10 minutes on his first day with Request Metrics. Pages, element, fix. #WebPerformance #CLS

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Request Metrics @requestmetrics.com · 02/04/2025

David Jacobs at Axos Bank uses Request Metrics to make their websites fast and usable. "The engineering team behind this make Request Metrics an incredible value. I cannot recommend enough."

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Request Metrics @requestmetrics.com · 25/03/2025

🔀 The powerful but dangerous Vary header: Vary: Accept-Encoding This creates separate cache entries for gzipped vs uncompressed content. But be careful - Vary on dynamic headers can destroy cache effectiveness 💣 requestmetrics.com/web-performance/http-caching/

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Request Metrics @requestmetrics.com · 19/03/2025

🔄 "no-cache" ≠ "don't cache"! This actually means "cache but validate before using" - not "don't cache at all" (that's no-store). This confusion causes so many performance issues! 🤦‍♂️ requestmetrics.com/web-performance/http-caching/

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Request Metrics @requestmetrics.com · 19/03/2025

@joshuaclareflagg.bsky.social uses Request Metrics for his #ecommerce stores to give him Quick and Easy insights into his #CoreWebVitals, and how to make his website faster!

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Request Metrics @requestmetrics.com · 12/03/2025

Lab Scores only represent 🧑‍💻a single load 🌎 from a single location ⏰ and a single point in time. Generally, the score doesn't matter-- user experience matters. And you measure that with RUM and CrUX. So why should you trust the numbers from Request Metrics? Because we SHOW OUR WORK!

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Request Metrics @requestmetrics.com · 10/03/2025

🏷️ ETag: the unsung hero of HTTP caching ETag: "123abc987654" This simple fingerprint header tells browsers when content hasn't changed, enabling 304 responses that send zero data but keep content fresh 🧠 requestmetrics.com/web-performance/http-caching/

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Request Metrics @requestmetrics.com · 06/03/2025

📄 Perfect caching for HTML documents: Cache-Control: public, max-age=300, must-revalidate Short cache time means content updates quickly, while "must-revalidate" ensures browsers double-check before showing potentially stale content 🔄 requestmetrics.com/web-performance/http-caching/

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Request Metrics @requestmetrics.com · 04/03/2025

🚀 The optimal way to cache your static assets: This tells browsers "don't even check if this file has changed" - cutting unnecessary validation requests and dramatically improving load times 💨 requestmetrics.com/web-performance/http-caching/

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Request Metrics @requestmetrics.com · 03/03/2025

Responsive Images: Right Size, Right Device 📱 Stop serving massive images to small screens! Use srcset to send the right size image based on device width. Less bandwidth = faster load times. Learn how: requestmetrics.com/web-performance/… #WebDev #Performance

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Request Metrics @requestmetrics.com · 25/02/2025

Do you ❤️ Request Metrics? We need your help! We just listed on @slashdot.org and our reviews look sad 😢 Give us a hand and let us know what you think by sharing a review! sourceforge.net/software/pro...

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Request Metrics @requestmetrics.com · 19/02/2025

Picking the wrong photo format kills performance! JPG for photos, PNG for graphics, WebP/AVIF for modern compression. Choosing wisely cuts file sizes in half! Full breakdown: requestmetrics.com/web-performance/… #WebPerf #CoreWebVitals

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Request Metrics @requestmetrics.com · 13/02/2025

🗓️ TODAY at 5:00 UTC Our founder @toddhgardner shares his investigation into whether #webperf actually matters for #SEO in 2025. Join the free online meetup at performanceobserver.dev

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Request Metrics @requestmetrics.com · 12/02/2025

The new Lab Scan email is 🔥 We automatically scan your busiest pages, rollup your scores and common issues from Mobile and Desktop, and show details from your slowest pages. Why are you still manually scanning your website?

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Request Metrics @requestmetrics.com · 10/02/2025

Picking the wrong image format kills performance! JPG for photos, PNG for graphics, WebP/AVIF for modern compression. Choosing wisely cuts file sizes in half! Full breakdown: requestmetrics.com/web-performance/… #WebPerf #CoreWebVitals

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Request Metrics @requestmetrics.com · 07/02/2025

Vector images (SVG) scale infinitely, stay crisp at any size, and have tiny file sizes—perfect for icons, logos, and graphics. Ditch PNGs when you can! Just don’t export a PNG as SVG—that’s cheating. 😉 Full breakdown here: 👉 requestmetrics.com/web-performance/…

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Request Metrics @requestmetrics.com · 24/01/2025

🎉 We just dropped an updated version of our popular HTTP Cache Header Checking tool for Request Metrics. It's a handy little tool to see how your website, image, scripts, or anything else on the web would be cached by web browsers. Caching can give you huge boosts for your returning visitors.

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Request Metrics @requestmetrics.com · 10/01/2025

Have you seen the Keyword Vitals Chrome Extension? It shows you the live performance scores in your Google Search pages and tells you if #webperf is a factor for that keyword. It shows if you need better performance to rank for your target #seo keywords. requestmetrics.com/resources/to...

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