Matt Zeunert (@mattzeunert) 's Twitter Profile
Matt Zeunert

@mattzeunert

Building @DebugBear, a site speed monitoring service.

ID: 454787551

linkhttp://www.mattzeunert.com/ calendar_today04-01-2012 11:28:42

830 Tweet

1,1K Followers

519 Following

DebugBear (@debugbear) 's Twitter Profile Photo

πŸš€ 10 game-changing web perf updates from 2024: INP as Core Web Vital, scheduler.yield for long tasks, and shared compression dictionaries cutting downloads by 90% Read our annual year-in-review post now! ⬇️ debugbear.com/blog/2024-in-w…

DebugBear (@debugbear) 's Twitter Profile Photo

πŸš€ Trying to get a quick overview of Core Web Vitals scores in your industry? Our new CrUX trends dashboard lets you see historical performance data for your own website and those of your competitors! Example: debugbear.com/project/25972/…

πŸš€ Trying to get a quick overview of Core Web Vitals scores in your industry?

Our new CrUX trends dashboard lets you see historical performance data for your own website and those of your competitors!

Example: debugbear.com/project/25972/…
Matt Zeunert (@mattzeunert) 's Twitter Profile Photo

Another day learning about Postgres indexes: πŸ“š Created my first GIN index for an array column πŸ”— Learned that Postgres cares a lot about column order

Another day learning about Postgres indexes:

πŸ“š Created my first GIN index for an array column
πŸ”— Learned that Postgres cares a lot about column order
DebugBear (@debugbear) 's Twitter Profile Photo

We just published a new free tool: test your website's Time to First Byte metric across 10 global test locations! πŸš€ Check server response time πŸ’» View CDN cache status 🌎 See what region the response was served from debugbear.com/test/ttfb

DebugBear (@debugbear) 's Twitter Profile Photo

Not sure how to fix Cumulative Layout Shift issues on your website? This guide shows three concrete examples of how to identify the cause of CLS and apply a solution. debugbear.com/blog/avoid-lar…

Matt Zeunert (@mattzeunert) 's Twitter Profile Photo

When talking to customers about their page speed metrics, one of the most common issues is that their PageSpeed Insights scores don't match what they see in DebugBear. Here's a new video with a detailed explanation! youtube.com/watch?v=t_UG-1…

Matt Zeunert (@mattzeunert) 's Twitter Profile Photo

Made a video investigating a truly niche LCP regression! Learn about how LCP is defined, discover bizarre edge cases in contentfulness, and see how to check for changes in metric definitions. youtu.be/aX7VRto8gVE

DebugBear (@debugbear) 's Twitter Profile Photo

🌎 The speed of your phone and internet connection has a big impact on how fast websites will load for you! We took at look at some of the countries where page speed is fastest and slowest. debugbear.com/blog/website-s…

🌎 The speed of your phone and internet connection has a big impact on how fast websites will load for you!

We took at look at some of the countries where page speed is fastest and slowest.

debugbear.com/blog/website-s…
Smashing Magazine πŸ‡ΊπŸ‡¦ πŸ³οΈβ€πŸŒˆ (@smashingmag) 's Twitter Profile Photo

Optimizing web performance means looking beyond surface-level metrics. Time to First Byte (TTFB) is crucial, but improving it requires more than tweaking server response time. ↬ In this article, you’ll learn more about what TTFB truly is, what causes its poor score, and why

Optimizing web performance means looking beyond surface-level metrics.  Time to First Byte (TTFB) is crucial, but improving it requires more than tweaking server response time.

↬ In this article, you’ll learn more about what TTFB  truly is, what causes its poor score, and why
CSS Weekly (@cssweekly) 's Twitter Profile Photo

CSS Weekly #605 πŸš€ Optimizing The Critical Rendering Path πŸ˜Άβ€πŸŒ«οΈ Focus by Negation Effect πŸ”Ž Dynamic Focus Zoom Effect πŸŒ„ How to Favicon & Gif in 2025 Featuring Matt Zeunert, Kevin Powell, @[email protected], Ollie Williams, Geoff Graham, Taha Shashtari, jhey Κ•β€’α΄₯β€’Κ”. cssw.io/issue-605

DebugBear (@debugbear) 's Twitter Profile Photo

Chrome DevTools has been shipping some exciting features lately. Here are some of our favorites: πŸ” Filter out 3rd-party scripts πŸ€– Get AI insights on performance bottlenecks πŸ“± Simulate real devices with calibrated CPU throttling ✨ And much more debugbear.com/blog/favourite…

Umar Hansa (@umaar) 's Twitter Profile Photo

πŸ“’ The Chrome DevTools flame chart has just become *much* easier to use. I wrote about these new features (for DebugBear), and other new DevTools features you probably didn't know about. debugbear.com/blog/favourite…

DebugBear (@debugbear) 's Twitter Profile Photo

We're hiring a content marketer in the UK! Consider applying if you've got a bunch of experience with Core Web Vitals and would like to write about web performance topics. apply.workable.com/debugbear/j/9E…

DebugBear (@debugbear) 's Twitter Profile Photo

πŸ”΄πŸŸ πŸŸ’ Check out our updated Web Vitals tab! We've improved the structure to make it easier to understand. You can see data from Google's CrUX report as well as lab test results in one place! Try it out yourself here: debugbear.com/project/25972/…

DebugBear (@debugbear) 's Twitter Profile Photo

Google has a new page speed audit to reduce document request latency, looking at different factors: ⏱️ Faster server responses πŸ—ΊοΈ URL redirects πŸ—œοΈ Gzip/Brotli compression debugbear.com/blog/document-…

Matt Zeunert (@mattzeunert) 's Twitter Profile Photo

πŸ€” Page speed optimizations in Google search results mean that some page content can load without ever connecting to the website server! Just published this article explaining how it's possible to view content even for a website blocked in etc hosts! debugbear.com/blog/google-bl…

Matt Zeunert (@mattzeunert) 's Twitter Profile Photo

I thought the browser console was simple... I was wrong 🀯 It's actually packed with hidden features: πŸ–ΌοΈ Logging images ✨ AI explanations πŸ₯Ή Logging tables πŸ”§ Console utilities ($0, $_, ...) πŸ”Ž Advanced filters πŸ”₯ Live expressions New article below! debugbear.com/blog/chrome-br…

DebugBear (@debugbear) 's Twitter Profile Photo

Third-party code can cause a lot of CPU tasks on the browser main thread, slowing down the page load and delaying user interactions. Our new article explains how to Partytown and web workers to run third-party scripts in the background! debugbear.com/blog/partytown…