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Check Core Web Vitals and compare metrics for desktop and mobile devices. Check pagespeed insights using our Chrome extension. β¨ How to use this extension 1. π οΈ Install the extension. 2. π Navigate to the web page you want to analyze. 3. π±οΈ Click on the extension icon. 4. π» The Core Web Vitals test will calculate metrics for desktop. 5. π± Click the "Mobile" button to calculate metrics for mobile devices. 6. π Click the "Desktop" or "Mobile" button to recalculate the metrics. π‘ Advantages of this extension π Instant Access to Key Metrics - β Quickly check Core Web Vitals metrics for any page (including competitors) without needing to access separate tools like Google PageSpeed Insights, Google Search Console, or Lighthouse. - π The extension automatically displays all critical data for the current page, including both mobile and desktop versions. π Performance Monitoring - π Helps you assess website performance in real time, identifying performance issues at any stage of development or maintenance. - π Regularly track metrics on pages to ensure that site updates do not negatively impact Core Web Vitals. π Competitive Analysis - π€ Analyze competitor performance to identify their weaknesses and incorporate these insights into your SEO strategy. - βοΈ Compare your page metrics with competitor websites under real-world conditions. π’ Support for SEO Ranking and Conversion Improvements - π Optimizing Core Web Vitals directly impacts a website's ranking on Google. The extension helps you address issues promptly and maintain competitive performance metrics. - π― Improving Core Web Vitals leads to better user experiences, reduced bounce rates, and higher conversions. π₯ Who will benefit from this extension - π οΈ SEO Specialists. Monitor and optimize website performance for better rankings. Analyze competitors' Core Web Vitals metrics. - π₯οΈ Web Developers. Identify and fix performance issues (e.g., slow LCP, high CLS). Test the impact of code changes on page speed and responsiveness. - π¨ UI/UX Designers. Ensure smooth user experiences by minimizing layout shifts and delays. Test design changes in real-world conditions. - π Digital Marketers. Improve website performance to reduce bounce rates and boost conversions. Understand how speed affects user engagement. - π Product Managers. Track page performance as part of product quality. Communicate insights and prioritize fixes with development teams. β LCP (Largest Contentful Paint) is a Core Web Vitals metric that measures the time it takes for the largest visible content element on a webpage to fully load and become visible to the user. This content is typically the largest image, video, or block of text in the viewport. LCP is an important indicator of page performance and user experience, as it reflects how quickly users can see and interact with the main content of the page. Google recommends an LCP time of 2.5 seconds or less for a good user experience. β CLS (Cumulative Layout Shift) is a Core Web Vitals metric that measures the visual stability of a webpage by tracking unexpected layout shifts during the page's lifecycle. These shifts occur when visible elements, such as images, buttons, or text, move unexpectedly while the page is loading or in response to dynamic content. CLS is calculated based on the size of the unstable elements and the distance they move in relation to the viewport. A low CLS score (ideally 0.1 or less) indicates a stable and user-friendly experience, while a high score suggests disruptive layout shifts that can frustrate users. β INP (Interaction to Next Paint) is a Core Web Vitals metric that measures the responsiveness of a webpage by evaluating how quickly it reacts to user interactions, such as clicks, taps, or keyboard inputs. INP focuses on the time between the user's interaction and the next visual update (paint) that reflects the response. This metric helps identify delays in interactivity and measures the page's ability to respond promptly to user actions. A good INP value is 200 milliseconds or less, indicating a responsive and seamless user experience. High INP values suggest sluggish interactivity, which can frustrate users. β FCP (First Contentful Paint) is a web performance metric that measures the time it takes for a browser to render the first piece of content from the DOM after a user navigates to a page. This content could be text, an image, or a non-white background, and it signals to the user that the page is starting to load. FCP is a key indicator of perceived loading speed, as it provides the first visual feedback to users. Google recommends an FCP time of 1.8 seconds or less for a good user experience. β TTFB (Time to First Byte) is a web performance metric that measures the time it takes for a user's browser to receive the first byte of data from the server after making an HTTP request. TTFB is an important metric for evaluating server responsiveness and overall website performance. Lower TTFB values (ideally less than 200 milliseconds) indicate faster server responses and a better user experience. π This extension makes the process of analyzing Core Web Vitals accessible, convenient, and efficient, enabling you to better meet the requirements of search engines and users. It is an excellent tool for improving performance, enhancing user experience, and achieving SEO goals.
LCP & CLS Monitor
Core Web Vitals Largest Contentful Paint and Cumulative Layout Shift Monitor This helps to identify problematic elements causing CLS performance issues on the page by visually highlighting them with a red border. Also in the lower left corner you can watch the change of this indicator while staying on the page.
SpeedVitals
SpeedVitals Extension helps you perform the Web Vitals Speed Test and TTFB Test on any website directly from your browser. SpeedVitals is a free Web Performance measurement tool that uses Lighthouse to measure Lab Data and Chrome's User Experience API (CrUX) to measure field data. 1) Web Vitals: Measure all the Web Vitals such as First Contentful Paint (FCP), Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), First Contentful Paint (FCP), Time to Interactive (TTI), and Speed Index (SI). We also measure some other metrics like Server Response Time (TTFB) and Web Page Size. 2) TTFB Testing: Measure TTFB (Time to First Byte) from 40 locations across the globe 3) Multi-Device Testing: Measure your Website's Performance across more than 30 devices having different Form Factors 4) Multi-Location Testing: Run Core Web Vitals test on more than 35 locations across the globe including United States, United Kingdom, India, Japan, Australia, Germany, Brazil, South Korea, and more. 5) Field Data: View the real-world Core Web Vitals data of any Web Page using Chrome's User Experience API. 6) Resource Graphs: Resource Graphs give a visual representation of Web Page resource distribution. 7) Waterfall Chart: Waterfall Chart provides a visualization of the load timings with metrics like Blocking Time, DNS Lookup Time, TCP Connect Time as well as HTTP Request/Response Header information. 8) Layout Shift Visualizer: Layout Shift Visualizer presents a GIF of Cumulative Layout Shift (CLS) and helps diagnose the cause behind the shift 9) Code Coverage: Code Coverage helps identify the resources (CSS/JavaScript) with unused code segments 10) SpeedVitals Pro Tips: SpeedVitals Pro Tips is an advanced curated list of factors that can dramatically speed up a Web Page. It also includes advanced platform-specific tips for CMSs like WordPress
Detailed SEO Extension
Get SEO insights at the click of a button to any website you're currently on. Built by full-time SEO's for daily analysis. Get SEO-related insights at the click of a button to any website you're currently on. Pull back their title tag, meta description, meta robots tag and much more. Save hours of time looking through the source code of this page with our SEO analysis extension.
Schema Builder for Structured Data
Easily build validated json-ld structured data markup for any webpage. Based on schema.org specification Generating structured data markup for your webpages doesn't have to be hard! No more having to learn each Schema type, which elements are required vs. recommended or worrying about errors and issues. Schema.dev's Schema Builder makes it as simple as point and click to generate the perfect JSON-LD structured data for dozens of Google supported Schema types! and all for FREE! ============================================= Be sure to view the initial training video for fastest time to value. https://videos.seoclarity.net/video/kazj73n005plxgv61 ============================================= Simply enable the plugin, choose the schema markup you'd like to add and then populate the form using the point and click capabilities or manual input. Already have schema markup on your webpages? The built-in Schema testing tool helps validate your schema markup and shows errors and warnings. Key Features - Updated March 2nd, 2025 ================================== + NEW! Support for Vehicle Listing Markup + Support for 20+ Schema types - including ALL Google supported markups + Automatic detection of existing structured data + Point-and-click ease to populate schema fields + Intuitive UI that guides you through required, recommended and optional elements for each schema + Structured Data Testing capabilities built in for any schema markup generated + Intuitive UI to guide through required, recommended and optional elements NOTE: The plugin is in actively development - Join the forums at https://support.schema.dev for feedback, bugs and tips.
