Blog | DebugBear

In this Astro tutorial, we'll create an interactive coffee blog using Astro's core concepts, including file-based routing, build-time and live content collections, and the islands architecture.
Astro is a performance-friendly meta-framework for content-heavy websites. It ships zero JavaScript by default, but you can add it wherever you need interactivity, which is one reason Astro sites tend to have significantly better Core Web Vitals than sites built with Next.js, Nuxt.js, WordPress, and other popular frameworks.
example.com is a reserved domain name set aside by the Internet Assigned Numbers Authority (IANA) for documentation purposes. It has been available as an example URL for developers and writers since the late nineties.
Ads often have a big negative impact on web performance. They frequently require large downloads and heavy CPU processing.
Yesterday, Google introduced new performance metrics to surface how ads impact user experience. You can find real-user data for these metrics in the Chrome User Experience Report, or check them yourself in Chrome DevTools.
A fast marketing website is important for making a good first impression on potential new customers. Often marketers are in charge of this part of the visitor experience, but developers are the ones actually making the technical changes.
In this article, I'll explain how marketing and development teams can work together to deliver a great user experience.
Server Timings provide a way to see what’s happening on the server while an HTTP request is processed. These metrics can be useful for uncovering bottlenecks in APIs, caches, or specific parts of your application.
In this post, we’ll look at what Server Timings are and why they’re useful, how they work through the Server-Timing header, how to check them, and how to track them over time.
Modern web applications are rarely built by a single team. They often combine first-party code with third-party scripts, analytics, images, videos, and embedded applications. While each component may perform well individually, together they can compete for network resources and significantly slow down page loads.
To help developers identify these issues, Microsoft recently introduced Network Efficiency Guardrails: an experimental browser feature that automatically detects common resource-loading patterns that negatively impact performance for real users.
This guide explains what performance issues you can detect, how to enable it in Microsoft Edge, how to implement it in Nuxt 4, and how to inspect reports in DevTools.
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 introduced our website bottleneck finder tool to help you find resources on your page that might be impacting these metrics but are not considered blocking by Chrome.
Normal Core Web Vitals tools highlight resources that completely block rendering. However, there are other ways that a request can delay the FCP and LCP values that the browser can't detect as part of a normal page load. That is exactly what this tool seeks to uncover for you.
The Lighthouse Best Practices category is easy to overlook because it doesn't feed into Core Web Vitals or search ranking directly. But its audits catch real problems: broken JavaScript, insecure connections, and permission prompts that annoy or mislead visitors. Because these issues are usually quick to identify and fix, this category is often one of the fastest wins available for improving your Lighthouse scores.
In this article, we'll go through every audit in Lighthouse's Best Practices category, explain how each one can impact users, and how to fix the issues that cause your page to fail.
Postal service websites need to provide quick and reliable access to essential services, from tracking deliveries and finding local branches to purchasing postage and managing mail. Users may be accessing these sites on a variety of devices and network connections, often while on the move.
In recent years, many of these services have focused on expanding their digital platforms, offering discounts for customers who opt to use their online services rather than do their business in store. With this shift in business strategy in mind, it's more important than ever that these websites are fast.
To better understand how these websites perform, we analyzed 25 national postal service websites from countries across Europe. We wanted to identify which postal websites deliver the fastest user experience and explore the factors that distinguish the best-performing sites from the rest.
AI agents are increasingly interacting with websites on behalf of users. Whether it's booking appointments, comparing products, searching documentation, or completing workflows, agents need a reliable way to understand and interact with web applications.
Traditionally, AI agents have relied on browser automation tools that inspect the DOM, click buttons, and fill forms much like a human user would.
WebMCP introduces a different approach. Instead of forcing AI agents to reverse-engineer your website's interface, WebMCP allows websites to expose structured tools that agents can discover and use directly.
This guide explains what WebMCP is, what advantages it has over agents interacting normally with the page content, and how to implement and validate WebMCP on your website.
Understanding these concepts can help make your website more accessible to the next generation of AI-powered tools.
Railway companies need to deliver websites that make it easy for travelers to plan their journeys and book tickets. Users may be using a wide range of devices, often on a mobile data connection.
To better understand how these sites perform, we analyzed 25 national train service websites from countries across Europe. We wanted to find out which website delivers the fastest experience and see what separates