DebugBear

Learn how to find slow pages on your website using Google CrUX data and real user monitoring www.youtube.com/watch?v=HzBP...

New tutorial: build a static site with interactive components in Astro! www.debugbear.com/blog/astro-t...

Google now publishing new performance data on websites with third-party ads! Learn more in this video. www.youtube.com/watch?v=LTNg...

Google's CrUX report now includes insights on how ads impact website performance! www.debugbear.com/blog/chrome-...

How can marketing and development teams work together on Core Web Vitals issues effectively? Find out in our new article. www.debugbear.com/blog/marketi...

We regularly cover #webperformance, and at the PP 2026 edition, @debugbear.com's Matt Zeunert gave a brief intro to page speed, then dived into different network throttling methods in Lighthouse, DevTools, and other tools. 👉 Watch the video of the talk on YouTube: www.youtube.com/watch?v=KO02...

You can now enable SPA mode in your RUM settings to get more detailed insights on each soft navigation. www.debugbear.com/docs/rum/spa...

Our product now supports uptime monitoring, tracking server timing metrics, and detecting conversions with URL triggers. www.debugbear.com/changelog/au...

Want to surface backend performance metrics to real monitoring tools? The HTTP Server-Timing header makes this possible. www.debugbear.com/blog/server-...

We've made it easier to set up conversion tracking! Instead of changing code on your website you can now set up URL-based conversion triggers. www.debugbear.com/docs/rum/con...

Check out our latest Youtube video to learn how to identify page speed bottlenecks on your website! youtu.be/yW1mVJuZ-N8

Our MCP server and API now let you generate timeline charts for RUM data!

You can now add uptime monitors on DebugBear! This feature is still in beta and we welcome your feedback! www.debugbear.com/uptime-monit...

Edge is experimenting with a new performance API: network efficiency guardrails let browsers report performance issues back to the server. www.debugbear.com/blog/network...

This month we launched a new free website testing tool, added new data export options, and improved our comparison UI. www.debugbear.com/changelog/ju...

Want to access your page speed data with Claude Code? We've just published a guide on how to connect Claude Code to our MCP server. www.debugbear.com/docs/claude-...

Our bottleneck finder can detect render-blocking requests that Chrome doesn't report. We explain how it works in our latest blog post. www.debugbear.com/blog/website...

🤖 New video: use our MCP server to set up your page speed tests and analyze your data! www.youtube.com/watch?v=V8sw...

Not sure why your website is rendering slowly? Our new website bottleneck finder identifies what resources key page content depends on. Test your website for free! www.debugbear.com/website-bott...

New you can now update test regions for your monitored pages in bulk. www.debugbear.com/docs/bulk-edit

How can you use Lighthouse to check if your website follows best practices? Our new article explains how to test your website and goes through the checks that Lighthouse performs. www.debugbear.com/blog/lightho...

You can now easily duplicate your custom web performance dashboards. Just hover over the dashboard in the list and click the copy icon.

You can now add histograms and scatter plots to your custom dashboards! www.debugbear.com/docs/dashboa...

Train wifi suspiciously close to the Lighthouse mobile device configuration 😅

Our MCP server now works with the Cursor desktop app! Learn how to connect your web performance data in cursor here: www.debugbear.com/docs/cursor-...

We just published a new blog post benchmarking page speed for train booking websites in Europe! We also looked at the technical factors that drive the results, and how these websites could be optimized. www.debugbear.com/blog/which-e...

New video: learn how to scan your website for issues with Core Web Vitals and other quality issues. www.youtube.com/watch?v=Hy23...

We've added an MCP server! You can now access your performance data with your AI agent, trigger tests, and add projects or timeline annotations. www.debugbear.com/docs/mcp

Last month we added support for the new Lighthouse agentic browsing audits, one-off page speed tests, and filters that apply to your entire custom dashboard. www.debugbear.com/changelog/ma...

Need your website to stay fast long-term? We've published a detailed guide to detecting performance regressions, notifying your team, and debugging issues. www.debugbear.com/blog/web-per...

Differences in URL query parameters can cause cache misses in the browser or on Content Delivery Networks. The new No-Vary-Search HTTP header fixes this problem. www.debugbear.com/blog/no-vary...

Want to run one-off page speed tests without setting up monitoring? Our new quick tests feature makes that easy, through the app or via our API. www.debugbear.com/docs/quick-t...

Ticket sales are open! perfnow.nl/tickets.html

Google announced the new Lighthouse agentic browsing category at Google I/O yesterday! It validates WebMCP integrations, LLMs.txt files, and if the accessibility tree is readable, ... Test your own website here: www.debugbear.com/test/website...

Want to test performance on a staging site or route traffic through a CDN? DebugBear now lets you DNS override to route domains to specified IP addresses. www.debugbear.com/docs/dns-ove...

There's a new category in Google's Lighthouse report: Agentic Browsing! www.debugbear.com/blog/lightho...

DebugBear lets you set up custom web performance alerts and send them out by email, in Slack, or Microsoft Teams. Learn how to set this up: www.debugbear.com/docs/website...

New this month: custom dashboards, better alert configuration, and an updated UI for adding chart annotations. www.debugbear.com/changelog/ap...

What's the fastest government services website? We ran tests for 25 countries to find out! www.debugbear.com/blog/which-g...

You can now create fully custom performance dashboards in DebugBear! Display the metrics that matter most to your team, and combine RUM, CrUX, and synthetic metrics all in one place. youtu.be/96fFkixiC8Y

📣 I'm delighted to welcome a new partner to @pixelpioneers.co: Meet @debugbear.com! 🙌 Founder Matt Zeunert will present a lightning talk on web performance metrics at the conference in Bristol on 19 June. 👉🏼 Read the full talk description and get your tickets: pixelpioneers.co/events/brist...

Check out the comprehensive guide to technical SEO we published this week! It covers everything from crawling, to indexing, and AI engines. www.debugbear.com/blog/technic...

📏 New free tool: check your website for layout shifts different screen sizes! www.debugbear.com/test/cls

Got a slow Shopify store? We've published an in-depth guide on how to make your Shopify website fast! www.debugbear.com/blog/shopify...

Want image content on your website to load quickly? Our new video explains key techniques to optimize your images. youtu.be/ExFVIQkyFxE

Sometimes servers are moody and don't want to compress HTTP responses. If this happens a lot for some files and you can't fix it, you can mute these alerts in your notification settings www.debugbear.com/docs/muting-...

New explainer video: learn how to keep your website fast with synthetic monitoring. www.youtube.com/watch?v=0il_...

We've made it easier to add chart annotations to your web performance data! www.debugbear.com/docs/annotat...

Did you know that lazy loading can sometimes make performance worse? Our new article explains how to effectively lazy load images and other page content. www.debugbear.com/blog/lazy-lo...

We've made a bunch of UI changes, including making it easier to trigger synthetic tests on demand and add chart annotations.