A look at the history of visual changes to example.com.

Google has been working on new metrics to measure how ads impact performance. Learn how you can view this data for real visitors and how to check it yourself in Chrome DevTools.

Marketing owns the site experience but developers make the changes. Learn how both teams can use shared performance data, experiments, and alerts to work together on page speed.

YouTube video by Pixel Pioneers

How does the emissions calculation work?

Learn how DebugBear tracks client-side navigations in single page applications and how to report each soft navigation as its own page view.

Introducing Uptime Monitoring to track site availability, Server Timing support for lab tests and RUM, URL-based conversion triggers, and more customization options.

The specific stories are true, but it's hard to draw broad conclusions

Learn what the Server-Timing header is and how to track server-side performance metrics.

The DebugBear website bottleneck finder is a new free tool to help uncover issues with First Contentful Paint, Largest Contentful Paint and the H1 element. Try the tool:…

Learn how to detect hidden network performance problems before they impact your users. This guide explains Microsoft's new Network Efficiency Guardrails, how they use Document Policy and the…

Introducing our new bottleneck finder tool, individual chart exports for custom dashboards, improved comparison data, bulk region editing, and HAR waterfall exports.

Chrome's render-blocking label doesn't always fully illustrate which resources are impacting a page's First Contentful Paint (FCP), Largest Contentful Paint (LCP) or H1-visible metrics. We recently…

In this video, we will take a look at how to setup the DebugBear MCP Server with Claude. DebugBear MCP server guide: https://www.debugbear.com/docs/mcp 0:00 - Intro 0:38 - Setup with Claude 1:30 -…

Find which network resources slow down page rendering. Check if your page depends on specific scripts or data.

Some Londoners need to use dynamic thermal modelling to demonstrate the need for AC

Mostly due to noise

The Telegraph reports that local councils are forcing homeowners to remove air conditioning units.

Introducing histogram and scatter plot charts for custom dashboards, plus a new DebugBear MCP server for Claude, ChatGPT, and Cursor.

Learn how WebMCP enables AI agents to interact with websites through structured tools instead of traditional browser automation. This guide explains how WebMCP works, how it compares to DOM-based appr...