Request Metrics

Hey there Bluesky #intro! We're Request Metrics Integrated Web Performance. AKA The Rocket Sloth 🚀🦥 We're a small & talented team building the best platform to make your website fast with combined RUM, Lab Testing, SEO tools, and Core Web Vitals. Check it out and let us help. requestmetrics.com

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

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

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

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

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

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

Your Speed Index is bad but the page looks fine? Lighthouse records a video of your page loading and scores how fast the viewport fills in. Not just the first pixel, the whole visual experience. requestmetrics.com/web-performa... #WebPerf

Lighthouse’s “First Meaningful Paint” sounds important. It isn’t. It’s deprecated, misleading, and still confusing people into fixing the wrong stuff. Here’s what FMP actually was, why Google killed it, and what to watch instead. requestmetrics.com/web-performa... #webperf #corewebvitals

Your hero image takes 5 seconds to show up? Users already hit the back button. That's Largest Contentful Paint killing your conversions and search rankings. Here's how to fix it: requestmetrics.com/web-performa... #WebPerf #CoreWebVitals

First Contentful Paint isn't about speed. It's about trust. Every millisecond of blank screen makes users wonder if your site is broken. Under 1.8 seconds tells them "I got you, content is coming." requestmetrics.com/blog/lightho... #WebPerf #CoreWebVitals

Missing the viewport meta tag? Your mobile users are waiting an extra 300ms on every single tap. Browsers add that delay to check for double-tap zooming. One line of HTML fixes it. requestmetrics.com/blog/lightho... #WebPerf #SEO

Most web servers ignore URL casing. But Node and Python don't. If /User/Profile and /user/profile are different routes in your app, our new "Preserve Casing" setting keeps them separate in your reports. requestmetrics.com/blog/product... #WebPerf #WebDev

Just got our last certificate renewal email ever. All our products are now fully automated with CertKit. No more $144/year wildcard certs. No more renewal reminders. No more "your site will be vulnerable" scare tactics. Dogfooding feels so good. #SSL #PKI

Third-party scripts work fine in tests but cause real user pain: Analytics blocking rendering Chat widgets slowing interactions Payment lag RUM catches this. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #ThirdParty

Complete performance strategy: 🧪 Synthetic testing in development 👥 RUM in production 🔍 Investigate with synthetic ✅ Validate with RUM https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #WebDev

Gmail scores terribly on Lighthouse despite being one of the snappiest web apps ever built. Context matters for performance measurement. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebDev #Performance

Synthetic testing: "Your site loads in 1.2 seconds! 🎉" Real users: "This page is taking forever..." 😤 RUM bridges this gap. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #UserExperience

Performance issues only RUM can catch: 🔍 Device-specific problems 🌍 Geographic gaps 💰 Traffic spike disasters 📱 Progressive degradation https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #RealUserMonitoring

Lighthouse simulates an "85th percentile user" but their simulation is usually wrong for your audience. RUM shows you YOUR users' reality. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebDev #Performance

Chrome User Experience Report is like the lite beer of Real User Monitoring 🍺 Better than nothing, but lacks the substance you need for real decisions. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #CoreWebVitals

Your CDN looks great in tests but European users get 3x slower load times. Your checkout tests perfectly but mobile users abandon carts due to lag. This is why you need RUM. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #UX

That moment when your Lighthouse score is 💯 but users are still complaining about slow pages... Stop guessing, start measuring what they actually experience. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebDev #Performance

🚨 Plot twist: 50% of websites with perfect Lighthouse scores still fail Core Web Vitals for real users. Your synthetic tests run in a perfect bubble. Your users live in the real world. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebPerf #RealUserMonitoring

Jordan Griffin discusses lowering the barrier to getting user feedback during the redesign of ⁨TrackJS⁩ . youtube.com/shorts/e4URn... Learn more about the TrackJS redesign 👇 trackjs.com/blog/a-fresh...

hello world!

Discover why Time to First Byte (TTFB) is crucial for website speed in this essential Concepts of Web Performance tutorial with @toddhgardner.com from Request Metrics.

Master the art of loading JavaScript efficiently in this essential Concepts of Web Performance tutorial with @toddhgardner.com from Request Metrics. youtu.be/vS3-1RQecEE

@duffeh.bsky.social wrote about focusing on the experience of your real users instead of SEO for web performance. He quoted my work on Keyword Vitals that it might not matter for your keywords. https://iankduffy.com/articles/web-performance---prioritising-user-experience-ahead-of-search-rankings/

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."

🔀 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/

The Image Optimization Hack Nobody Talks About 🎩 💡 Optimize your thumbnails! ✅ Resize before serving (don’t rely on CSS) ✅ Convert to WebP/AVIF ✅ Serve from a CDN or separate subdomain More image tricks: https://requestmetrics.com/web-performance/high-performance-images/ #WebDev #Optimization

💥 Cache busting 101: styles.d41d8cd98f.css vs styles.css?v=1.2 Both methods invalidate cache when content changes, but the first (filename hashing) is far superior! It enables longer cache times without refresh issues 🔒 requestmetrics.com/web-performance/http-caching/

🔄 "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/

@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!

Your hero image is probably your LCP element. If it’s slow, your SEO suffers. ✅ Compress it (WebP/AVIF) ✅ Use fetchpriority="high" ✅ Serve via CDN Fix LCP now: https://requestmetrics.com/web-performance/high-performance-images/ #SEO #LCP

WebP vs. AVIF: Which One Wins? 🏆 WebP & AVIF crush file sizes, but which is better? ✅ WebP: Smaller than JPG/PNG, widely supported ✅ AVIF: Even smaller, but not universal Best practice? Serve both with <picture>. Full guide: https://requestmetrics.com/web-performance/high-performance-images/

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!

Stop Hosting Images on Your Server 📦 Serving images from your main server? That’s a performance disaster. CDNs cache images worldwide for faster delivery & lower bandwidth. Move your images to a CDN like Bunny. More tips: https://requestmetrics.com/web-performance/high-performance-images/

🏷️ 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/

Bad animations kill performance. Stick to transform & opacity—they run on the GPU and won’t block frames. 🚀 More tips here: 🔗 https://requestmetrics.com/web-performance/long-animation-frame-loaf/ #webperf #perfmatters

📄 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/

Don't make users download images twice 🛑 Browsers shouldn’t download the same images every visit! Set Cache-Control headers so users store images locally: Cache-Control: public, max-age=31536000, immutable Full caching guide: https://requestmetrics.com/web-performance/http-caching/ #Caching

🚀 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/

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: https://requestmetrics.com/web-performance/high-performance-images/ #WebDev #Performance

JavaScript can ruin your site’s smoothness. If it runs too long, it blocks frames and causes lag. Optimize your scripts and let the browser breathe. 🏃‍♂️ Full guide: 🔗 https://requestmetrics.com/web-performance/long-animation-frame-loaf/ #webperf #perfmatters

Why HTTP/3 Speeds Up Image Delivery 🚀 Your images aren’t slow—your protocol is. HTTP/3 reduces latency, speeds up image loading, and boosts mobile performance. Still on HTTP/2? You’re missing out. Learn why HTTP/3 matters: https://requestmetrics.com/web-performance/http3-is-fast/ #CDN #WebDev

Think your site feels slow but don’t know why? Long Animation Frames (LoAFs) might be the culprit. Use Chrome DevTools → Rendering → FPS meter to find them! 🔎 Full guide: 🔗 https://requestmetrics.com/web-performance/long-animation-frame-loaf/ #webperf #corewebvitals

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...

Website images without width & height cause layout shifts, especially lazy-loaded ones! Set dimensions so the browser reserves space. <img src="" height="100" width="100" /> Fix CLS issues fast: https://requestmetrics.com/web-performance/high-performance-images/ #CLS #WebPerf