@mattzeunert
Working on web performance optimization, founder of @debugbear.com
A beta version of our uptime monitoring product is available now! It's free to try right now, and we appreciate any feedback.
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 🙃
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...
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...
These almost look like real enterprise enquiries, except for the example.net email address...
Largest Contentful Paint delays in single page apps often show up as load delay. Until the JavaScript code has run, the browser simply doesn't know about the image file that it needs to load. Learn more about load delay here: www.debugbear.com/blog/lcp-res...
Still confused by the new build AC ban. My naive read of Part O does not sound like a ban. Though it also interacts with Part L (reducing power use). But then the Part O impact assessment states avoiding AC uptake as a goal, not just passive cooling assets.publishing.service.gov.uk/media/61b883...
Cannabis isn't banned in the UK! You just need to demonstrate need and show that you've exhausted all preferable steps of the treatment hierarchy.
Our website traffic has been pretty stable over the last two years, but Ahrefs estimates we 10x'd it! I think it's a mix of spam in their data and some high-volume keywords where we rank but don't get many clicks.
I finally managed to find an example where an air conditioning unit was actually removed at least partially for climate reasons! On appeal, the refusal based on local character, noise, and Camden's climate change resilience policy was upheld.
Councils rarely refuse permission to install AC because of the cooling hierarchy. Normally it's due to noise or appearance. Camden Council did order the removal of three heat pumps, despite extensive prior work. On appeal, planning permission was granted.
Just published a new industry benchmark: how fast are different post office websites in Europe? www.debugbear.com/blog/europea...
Are some government websites just slow because visitors have slower websites? To answer that question, we added support for scatter chart to our DebugBear performance dashboards!
You can now create custom histograms in your DebugBear dashboards! Add additional metrics to view how they correlate.
I'm speaking at Pixel Pioneers today! I'll explain different ways to measure web performance. Found a new fun example this week where Lighthouse reports that a slow connection makes the website load much faster compared to the measured data.
The new agentic browsing checks are now live on PageSpeed Insights! Learn more: www.debugbear.com/blog/lightho...
New analysis: what country has the fastest train booking website? Interesting findings: 🚛 A site can load quickly even with large assets 👉 Many fast-loading sites respond slowly to interactions www.debugbear.com/blog/which-e...
Another update to example.com this week: the HTML now defines an empty icon. This means browsers no longer try to load favicon.ico, significantly reducing overall page weight. www.debugbear.com/project/3/pa...
Want to analyze your web performance data via chat or configure website monitoring with your AI agent? We've added support for an MCP server that you can connect to ChatGPT, Claude, and other tools.
Need help optimizing your Shopify website? I just added Hallway to our partner listing. They can help you improve page speed and overall website performance. www.debugbear.com/web-performa...
Want to run a one-off page speed test without setting up monitoring? The new DebugBear quick tests feature makes it easy to run performance tests without having the pages clutter your monitoring dashboard.
Our website scan at DebugBear makes it easy to set up web performance monitoring for your website. But it's usually not worth it to test many thousands of individual pages regularly. We've just shipped a new auto-select option that tries to pick a diverse set of templates!
Got some helpful feedback on the website grader from @massimovilla.bsky.social yesterday: the non-performance data is a bit hard to find! I've fixed that now: you can see the AI score and other Lighthouse scores right in the overview tab. www.debugbear.com/test/website...
Server-side rendering means page content doesn't depend on loading and running client-side JavaScript. But sometimes images are still not loaded right away. You can test your own website here to see how the main image on your website is loaded: www.debugbear.com/test/website...