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Measuring the Performance of Core Web Vitals with Google Lighthouse

23. July 2020Next year, Google will use page experience as a ranking factor. The performance of the page is an important part of that page experience. Now, in the SISTRIX Optimizer, you can automatically measure the Core Web Vitals metric with Google Lighthouse.ContentsContentsThe new key metrics Core Web VitalsGoogle Lighthouse 6 0Exporting the Lighthouse JSON Google has announced that it will combine a number of key figures on user experience under the banner “Page Experience” and make it a ranking factor next year (2021). In addition to already known factors such as HTTPS or mobile friendliness, you will now find references to Core Web Vitals.

The new key metrics Core Web Vitals

With the three key metrics in the Core Web Vitals, Google wants to comprehensibly measure how user-friendly and fast a page loads. Google has expressly reserved the right to change the composition of the Core Web Vitals but they currently consist of these three key figures:Largest Contentful Paint (LCP) – this is related to the loading speed. It measures how long it takes for the largest block of content to become visible to the user.First Input Delay (FID) – this measures the time it takes between a user interaction and a response on the page. i.e. input latency.Cumulative Layout Shift (CLS) – finally, Google measures whether the layout of the half-loaded page is stable or whether there are significant layout shifts during the loading process. To determine this data, one can either use user data from a website (field data) or carry out measurements (lab data). Both methods have advantages and disadvantages. In the SISTRIX Optimizer we use lab data derived ourselves from Google Lighthouse.

Google Lighthouse 6 0

With the release of Google Lighthouse 6 0 in May, the key figures of the Core Web Vitals are now supported. We are therefore replacing the current performance measurement in the SISTRIX Optimizer with Google Lighthouse. You can use this to prepare your website for algorithm changes at Google from today. The Lighthouse reports are automatically executed once a day and their results are saved. We use the standard settings from Lighthouse (Mobile, Moto G4, Network and CPU throttling). The device can be changed in settings, from Mobile to Desktop. In the optimizer, you can see the three values of the Core Web Vitals along with the Lighthouse Performance Score. In addition to the daily updated values, we’ll present the historical values as a graph, underneath. We also display a waterfall diagram (as before) so that you can quickly see which resources and areas of the website are causing performance problems.

Exporting the Lighthouse JSON

Google Lighthouse determines numerous other values. These are saved in a standardised JSON file. In the Optimizer you can export these files and edit them yourself. You can load them into the Lighthouse Report Viewer, for example, and examine the extensive evaluations. More details about this feature are now available in an informational article. 30.11.2020 Changelog 10 New Countries added to Toolbox Data-Set. Content Planner: Optimised Topic Clusters at the Push of a Button Keyword and URL History for Extended Data More up-to-date data for Google Ads View SERP Screenshots in the Toolbox Pre-crawled Onpage Analyses for (almost) Every Domain SISTRIX 'Reduced Complexity' User Interface Option Amazon: Keyword lists with new functions Ranking History: Now Faster and More Flexible Link Module: LinkPlus as Default Smartphone Visibility Index and ranking-data New Countries: Romania, Slovenia, Bulgaria, Croatia Lists in the Toolbox: Analysis of Competitors and SERP Features Japan. New country added to the Toolbox SISTRIX Sweden Link Module: Discover Defective Links, Harness Link Chances and Evaluate Link Profiles Extended On-Page Checks now available in the Optimizer Find and Analyse URL changes Social Signals: detailed URL-analysis and evaluation of LinkedIn & Pinterest Improve your SERP-Snippets with the Toolbox Extended keyword-database for Spain Design- and Usability-Refresh for the Toolbox Ranking Development now available for All Keywords SISTRIX Brasil SISTRIX Poland Parallel crawling for large websites Smartphone-data and Visibility Index for all countries Revising and Updating the Keyword Overview Keyword Ideas: Feature improved More Keyword Countries, new Technology History and much more Compare Keywords and Unused Keywords Revised Worldwide Performance and Uptime Monitoring Google Search Console API Integration Overhauling the keyword evaluation information Extended keyword-database for the UK Moving the Extended Database to Mobile SERPs SISTRIX Netherlands Extensive Hreflang Checks now in the Optimizer. Snippet Preview and SERP-Features as Rapid Access Content Assistant, For Perfectly Optimised Posts Daily Visibility Index now available for all 13 countries. Discover Link Opportunities SISTRIX Labs: Live Visibility Index Virtual robots.txt file in the Optimizer Traffic Forecasting, Keyword Research and more Keyword and Traffic Data - Expanded data with more accurate and fresher results Improved Detection of Google SERPs Keyword and Domain Preview New evaluation in the SEO module: URLs Daily updates for the Visibility Index now available. Filter Tables using Regular Expressions Movers and Shakers now with Individual Settings and Filters More keywords and rankings added to SERPs databases Unique Onpage Analyses Identify Lost Links Ranking Changes updated with extensive filtering and sort features. SISTRIX Content Discovery - The Best Content, in a Search Engine Common keywords: more data, filters and opportunities Identifying Technologies in the Toolbox Compact mode for SISTRIX tables Comprehending Website Changes with the Optimizer Toolbox API: Onpage-Evaluations Updating the performance-check in the Optimizer Optimizer: JavaScript Crawling now by Google Chrome Additional Integrations for the Search Console Data Extensive Analyses with more Data from the Google Search Console Ad-hoc evaluations with LinkPlus Keyword and Analysis for Amazon Extensive Onpage-Evaluations With More Crawling Sources New numbering system for some Universal-Search results Measuring the Performance of Core Web Vitals with Google Lighthouse Beta: Search Intention Analyses in the Toolbox Google Chrome will show HTTP forms as not secure Keyword monitoring for Bing, Yahoo & Yandex in the SISTRIX Optimizer SISTRIX Labs & Keyword-Groups Keyword Discovery: Keyword research in the toolbox JavaScript-Crawling in the SISTRIX Optimizer Detect Differences between SERP Snippets and Meta Description Canada, Australia, Russia, Mexico. New countries added to the Toolbox. 250 million New Keywords for the Toolbox New Countries in the Toolbox: India and South Africa Ranking History. Daily Data and Keyword Comparison. Beta: Instagram Analysis Live Data - Now Available for Keyword and Ranking Analysis. Upgrading our Link Database SISTRIX Influencer Search Back to overview German English Spanish Italian French