New video: learn how to scan your website for issues with Core Web Vitals and other quality issues.
www.youtube.com/watch?v=Hy23...
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...
There's a new category in Google's Lighthouse report: Agentic Browsing!
www.debugbear.com/blog/lightho...
Learn how to check your entire website for problems across page speed, accessibility, SEO, and agentic browsing.
00:00 Introduction
00:13 How run run a website scan
00:30 Retrieving CrUX…
www.youtube.com
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...
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...
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...
Ticket sales are open!
perfnow.nl/tickets.html
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...
Run one-off page speed tests against any URL without adding the page to your monitoring dashboard.
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...
Learn how No-Vary-Search improves caching for URLs with query parameters. This article explains how the header works, when it increases cache efficiency, and when to avoid it.
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
Resolve a hostname to a specific IP address during a test, so you can hit a staging server or bypass a CDN to reach your origin directly.
