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.

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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.

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:…

Continuously monitor your website's uptime and response speed. Get alerted the moment your site goes down.

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.

How to setup the DebugBear MCP server with Claude Code.

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.

A guide to every audit in Lighthouse's Best Practices category and how to fix failures in order to reach a score of 100.

Create custom dashboards that combine Lab, CrUX, and RUM data in one place for detailed comparisons and reporting.

Connect Cursor to DebugBear with the Model Context Protocol so you can run page speed tests, query metrics, and manage projects from Cursor's agent.

An analysis of 25 European train websites to discover which website performs best across the Core Web Vitals.

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…

Connect AI assistants like Claude and ChatGPT to DebugBear using the Model Context Protocol (MCP) to run tests, query metrics, and manage projects.

A new Lighthouse category for agentic browsing, quick tests for one off analysis, AI agent prompts, custom DNS mappings, and dashboard filters.

Learn how to set up performance budgets to monitor Core Web Vitals and other key metrics such as Time To First Byte and First Contentful Paint.

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.

Run one-off page speed tests against any URL without adding the page to your monitoring dashboard.

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.

Check your pages for issues with performance, SEO, accessibility, and agentic browsing. Get a free report with tips to improve your website.

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.

Lighthouse 13.3 introduces a new Agentic Browsing category that audits how well your website works with AI agents.

Set up alerts to get notified about performance regressions and stay on top of your team's web performance efforts.

Custom dashboards are now available, along with Lighthouse and Chrome upgrades and a new CLS tool.

An analysis of 25 government websites to discover which website has the fastest Largest Contentful Paint (LCP) and upholds modern web standards.

Learn how to set up custom page speed and Core Web Vitals dashboards for your team. Combine synthetic metrics, Google CrUX data, and real user monitoring data in one place. Try DebugBear:…

A comprehensive technical SEO checklist for 2026 covering crawling, indexing, Core Web Vitals, JavaScript rendering, security, and visibility in AI-powered search engines.

Test Cumulative Layout Shift across different screen sizes. Identify page elements that shift unexpectedly. Check if scrolling increases CLS scores.

Most Shopify speed advice focuses on Lighthouse scores, but the real bottlenecks are oversized hero sections, uncontrolled app scripts, and poor loading strategy. Here's how to fix them properly.

Learn how to deliver images effectively and optimize page speed. This video explains three key techniques for making images load quickly on the web. Try DebugBear for free:…

Learn what synthetic website monitoring is, how it's different from real user monitoring, and what benefits it provides. Try monitoring your website with DebugBear:…

Learn how to use lazy loading without hurting web performance. This article explains when lazy loading improves performance, when it backfires, and how it impacts Core Web Vitals like LCP, CLS, and…

Get top rankings for different industries and see performance trends over time.

Preconnect hints can speed up page loads, but what happens when you use too many? We tested the impact of excessive preconnects on page speed.