mattzeunert.com

Our latest Youtube video explains what soft navigations are and how they can be measured in Google Chrome. www.youtube.com/watch?v=M4Vd...

You can now filter your DebugBear RUM data by any URL query parameter!

Small UX improvement: moving your cursor over the DebugBear page load recording now controls what time is selected in the video.

Asking Claude what's going on with memory consumption on my laptop 😳

Google's CrUX data now includes more nuanced Core Web Vitals metrics for single page apps! You can check the new soft navigation metrics in our website speed test here: www.debugbear.com/test/website...

Wondering what a good score would look like for your performance metrics? You can now enable rating bands in your DebugBear charts, just right-click and enable them from the menu.

You can now run page speed experiments with the DebugBear API and MCP server.

71% of Astro sites have good Core Web Vitals, compared to 35% for Next.js. Our latest article takes a detailed look at the Astro framework, showing how to build static pages and add interactivity. www.debugbear.com/blog/astro-t...

We've made it a bit easier to understand the DebugBear RUM alert options!

Google has introduced a new set of performance metrics providing insight into how ads impact page speed. This video explains what the metrics measure and how to view ad performance data in Chrome DevTools. www.youtube.com/watch?v=LTNg...

Spent some time this weekend reading about heat-related mortality in the UK. It's all very confusing and fuzzy. britishequalitylab.com/p/how-high-i...

DebugBear updates for September: 🏄 View Baseline feature support for your visitors 🛒 Ad performance metrics from Google's CrUX Report 📈 Even more customizable custom dashboards www.debugbear.com/changelog/se...

Example.com just received a redesign, with JavaScript-enabled language transitions! Our latest blog posts takes a look at how the website has changed over time. www.debugbear.com/blog/example...

Want to know what features are supported in your visitors' browsers? DebugBear now reports browser version adoption over time and shows you browser support based on Google's Baseline project.

New in DebugBear custom dashboards: show rating thresholds for each metric, and customize your data aggregation interval.

More progress on speeding up VM launches, this time by switching to a faster disk type!

We finally did some more work to bring down the launch time of the VMs that run our page speed tests! VMs now start 30% faster after embedding more data in the disk image rather than loading it from artifact registry.

Google has launched a new set of ad performance metrics! Our latest article takes a deeper look at how this data is collected and what you can do with it. www.debugbear.com/blog/chrome-...

Google has started publishing ad performance data as part of the Chrome User Experience Report! Where available, you can now find this data in the Web Vitals tab of our free website speed test. Try it yourself here: www.debugbear.com/test/website...

Interesting AI overview 💦⚽️

Marketing and development teams often work on web performance problems together. In this guide I explain how different teams can collaborate effectively and get the web performance data they need. www.debugbear.com/blog/marketi...

My Pixel Pioneers talk is on Youtube now! I give a brief introduction to page speed and then dive into different network throttling methods in Lighthouse, DevTools, and other tools. www.youtube.com/watch?v=KO02...

Spent some time looking at carbon emission calculations for two proposed new data centers. britishequalitylab.com/p/what-are-t...

We're working on updating our weekly report! It will include data across synthetic tests, CrUX, RUM, and uptime checks. Plus you'll be able to receive it in Slack and Teams, rather than just over email!

Our RUM product now lets you track each soft navigation in a single page app as it's own page view! This way you can get Core Web Vitals metrics that match how your users actually experience navigating around your app. www.debugbear.com/docs/rum/spa...

New in Debugear this month: ✅ Uptime monitoring 🤖 Server timing support 🤑 URL-based conversion triggers www.debugbear.com/changelog/au...

Coming soon in DebugBear: track Core Web Vitals for individual soft navigations in single-page apps.

Claude is great for making papers more readable. The aversion some academics have to paragraphs is bizarre.

I got distracted and ended up needing over 5 weeks to finish my latest article on UK air conditioning rules 😔 But I'm finally done taking a closer look at the stories in The Telegraph and some of the broader media coverage. britishequalitylab.com/p/a-review-o...

Server timing headers make backend performance metrics available on the front-end. Our latest article explains how these headers work and how to view them in DevTools and DebugBear. www.debugbear.com/blog/server-...

We've improved support for server timing headers in DebugBear! 📊 Breakdown view in request details ⚙️ Automatic server timing tracking in synthetic monitoring 📈 Track server timings as a custom RUM metric

I made a flowerpot from the soil in my friend's garden! Wasn't sure it's possible, but ChatGPT was incredibly helpful throughout the process.

DebugBear now also sends out notifications when one of your web performance budgets recovers.

We now show Core Web Vitals metrics for specific soft navigations in your RUM data! Note that this is currently only supported in the latest version of Chrome.

New video: learn how to identify web performance bottlenecks on your website. youtu.be/yW1mVJuZ-N8

A beta version of our uptime monitoring product is available now! It's free to try right now, and we appreciate any feedback.

What if the browser could report performance issues like it does security issues? The Network Efficiency Guardrails API is a proposed web platform feature that detects page speed issues in the browser and sends a report to the server. www.debugbear.com/blog/network...

DebugBear product updates for July: 🍾 New free bottleneck finder 💽 Better data export 🤔 Improved comparison view 🌎 Bulk update test regions www.debugbear.com/changelog/ju...

Starting to add uptime monitoring to DebugBear! Already detected a short outage on web.dev, and brought down our uptime monitoring infrastructure for three hours 🙃

New article explaining how our bottleneck finder can detect render-blocking requests that Chrome doesn't report! Learn how we built our latest free tool. www.debugbear.com/blog/website...

We've published a new video explaining how to get started with the DebugBear MCP server and how it can help you analyze web performance issues and set up monitoring. www.youtube.com/watch?v=V8sw...

Spotted a recent performance regression on the Squarespace homepage recently: the H1 and main image now depend on a script to show up. DebugBear reports the regression right away, and you can start seeing the impact on Google's CrUX metrics as well now. www.debugbear.com/project/2597...

We've made some improvements to our Website Bottleneck Finder! Thanks for all the feedback 🥰 🔬 Actionable advice 🤔 More context on how the bottleneck finder is different from our page speed test 😵 Fewer crashes Try it yourself here: www.debugbear.com/website-bott...

We've just launched a new free tool: the Website Bottleneck Finder detects which resource requests hold back the FCP, LCP, and H1 rendering time! www.debugbear.com/website-bott...

The Ministry of Housing has confirmed that developers can add air conditioning to homes that already meet the passive cooling requirements! AC could still be impracticable due to the "all possible passive means" standard, sustainability requirements, or local planning rules.

We've improved the comparison view for breakdown bars in DebugBear! Instead of just showing data side by side you now get an actual comparison.

Parser-blocking scripts block rendering of any content below them in the HTML. If they are placed at the end of the body then that's not a problem, but if they appear further up they can slow down your website. Learn more: www.debugbear.com/blog/visuali...

UK councils don't usually require homeowners to prove their need for air conditioning with dynamic thermal modelling. However, the London borough of Camden does have extensive requirements to comply with their sustainability guidelines. britishequalitylab.com/p/camdens-an...

These almost look like real enterprise enquiries, except for the example.net email address...