{"id":2441,"date":"2020-06-03T22:20:04","date_gmt":"2020-06-04T05:20:04","guid":{"rendered":"https:\/\/www.virendrachandak.com\/techtalk\/?p=2441"},"modified":"2020-06-04T21:50:44","modified_gmt":"2020-06-05T04:50:44","slug":"how-to-track-web-vitals-in-google-analytics","status":"publish","type":"post","link":"https:\/\/www.virendrachandak.com\/techtalk\/how-to-track-web-vitals-in-google-analytics\/","title":{"rendered":"Tracking Web Vitals in Google Analytics"},"content":{"rendered":"

There are a few different ways to track Web Vitals<\/a>, however the easiest way is using the web-vitals JavaScript library<\/a>. In this post we will load the web-vitals directly from CDN and use that to track the Core Web Vitals (LCP, FID, CLS) and other Web Vitals (FCP, TTFB) metrics.<\/p>\n

 <\/p>\n

Track Web Vitals in Google Analytics using analytics.js<\/h2>\n

The following block of code can be used to measure and send the Core Web Vitals metrics to Google Analytics as events using analytics.js<\/p>\n

\r\n<script src="https:\/\/unpkg.com\/web-vitals@0.2.2\/dist\/web-vitals.es5.umd.min.js"><\/script>\r\n \r\n<script>\r\nfunction sendToGoogleAnalytics({name, delta, id}) {\r\n    \/\/ Assumes the global `ga()` function exists, see:\r\n    \/\/ https:\/\/developers.google.com\/analytics\/devguides\/collection\/analyticsjs\r\n    ga('send', 'event', {\r\n        eventCategory: 'Web Vitals',\r\n        eventAction: name,\r\n        \/\/ Google Analytics metrics must be integers, so the value is rounded.\r\n        \/\/ For CLS the value is first multiplied by 1000 for greater precision\r\n        \/\/ (note: increase the multiplier for greater precision if needed).\r\n        eventValue: Math.round(name === 'CLS' ? delta * 1000 : delta),\r\n        \/\/ The `id` value will be unique to the current page load. When sending\r\n        \/\/ multiple values from the same page (e.g. for CLS), Google Analytics can\r\n        \/\/ compute a total by grouping on this ID (note: requires `eventLabel` to\r\n        \/\/ be a dimension in your report).\r\n        eventLabel: id,\r\n        \/\/ Use a non-interaction event to avoid affecting bounce rate.\r\n        nonInteraction: true,\r\n    });\r\n}\r\naddEventListener('DOMContentLoaded', function() {\r\n    webVitals.getCLS(sendToGoogleAnalytics);\r\n    webVitals.getFID(sendToGoogleAnalytics);\r\n    webVitals.getLCP(sendToGoogleAnalytics);\r\n});\r\n<\/script>\r\n<\/pre>\n
 <\/p>\n
Track Web Vitals in Google Analytics using gtag.js<\/h2>\n
The following block of code can be used to measure and send the Core Web Vitals metrics to Google Analytics as events using gtag.js<\/p>\n
\r\n<script src="https:\/\/unpkg.com\/web-vitals@0.2.2\/dist\/web-vitals.es5.umd.min.js"><\/script>\r\n \r\n<script>\r\nfunction sendToGoogleAnalytics({name, delta, id}) {\r\n    \/\/ Assumes the global `gtag()` function exists, see:\r\n    \/\/ https:\/\/developers.google.com\/analytics\/devguides\/collection\/gtagjs\r\n    gtag('event', name, {\r\n        event_category: 'Web Vitals',\r\n        \/\/ Google Analytics metrics must be integers, so the value is rounded.\r\n        \/\/ For CLS the value is first multiplied by 1000 for greater precision\r\n        \/\/ (note: increase the multiplier for greater precision if needed).\r\n        value: Math.round(name === 'CLS' ? delta * 1000 : delta),\r\n        \/\/ The `id` value will be unique to the current page load. When sending\r\n        \/\/ multiple values from the same page (e.g. for CLS), Google Analytics can\r\n        \/\/ compute a total by grouping on this ID (note: requires `eventLabel` to\r\n        \/\/ be a dimension in your report).\r\n        event_label: id,\r\n        \/\/ Use a non-interaction event to avoid affecting bounce rate.\r\n        non_interaction: true,\r\n    });\r\n}\r\n \r\naddEventListener('DOMContentLoaded', function() {\r\n    webVitals.getCLS(sendToGoogleAnalytics);\r\n    webVitals.getFID(sendToGoogleAnalytics);\r\n    webVitals.getLCP(sendToGoogleAnalytics);\r\n});\r\n<\/script>\r\n<\/pre>\n
 <\/p>\n
Track Web Vitals in Google Analytics using Google Tag Manager<\/h2>\n
The following block of code can be used to measure and send the Core Web Vitals metrics to Google Tag Manager. After this we will also need to configure Google Tag Manager to send that data to Google Analytics (see this comment<\/a> for implementation details).<\/p>\n
\r\n<script src="https:\/\/unpkg.com\/web-vitals@0.2.2\/dist\/web-vitals.es5.umd.min.js"><\/script>\r\n \r\n<script>\r\nfunction sendToGTM({name, delta, id}) {\r\n    \/\/ Assumes the global `dataLayer` array exists, see:\r\n    \/\/ https:\/\/developers.google.com\/tag-manager\/devguide\r\n    dataLayer.push({\r\n        event: 'web-vitals',\r\n        event_category: 'Web Vitals',\r\n        event_action: name,\r\n        \/\/ Google Analytics metrics must be integers, so the value is rounded.\r\n        \/\/ For CLS the value is first multiplied by 1000 for greater precision\r\n        \/\/ (note: increase the multiplier for greater precision if needed).\r\n        event_value: Math.round(name === 'CLS' ? delta * 1000 : delta),\r\n        \/\/ The `id` value will be unique to the current page load. When sending\r\n        \/\/ multiple values from the same page (e.g. for CLS), Google Analytics can\r\n        \/\/ compute a total by grouping on this ID (note: requires `eventLabel` to\r\n        \/\/ be a dimension in your report).\r\n        event_label: id,\r\n    });\r\n}\r\n \r\naddEventListener('DOMContentLoaded', function() {\r\n    webVitals.getCLS(sendToGTM);\r\n    webVitals.getFID(sendToGTM);\r\n    webVitals.getLCP(sendToGTM);\r\n});\r\n<\/script>\r\n<\/pre>\n
 <\/p>\n
Track Other Web Vitals metrics<\/h2>\n
In addition to the Core Web Vitals we can track other Web Vitals using the web-vitals JavaScript library. We can just use the getFCP() and getTTFB() functions to get the data. Here is code that we can use to track the all the Web Vitals metrics,<\/p>\n
\r\n<script src="https:\/\/unpkg.com\/web-vitals@0.2.2\/dist\/web-vitals.es5.umd.min.js"><\/script>\r\n \r\n<script>\r\nfunction sendToGoogleAnalytics({name, delta, id}) {\r\n    \/\/ Assumes the global `ga()` function exists, see:\r\n    \/\/ https:\/\/developers.google.com\/analytics\/devguides\/collection\/analyticsjs\r\n    ga('send', 'event', {\r\n        eventCategory: 'Web Vitals',\r\n        eventAction: name,\r\n        \/\/ Google Analytics metrics must be integers, so the value is rounded.\r\n        \/\/ For CLS the value is first multiplied by 1000 for greater precision\r\n        \/\/ (note: increase the multiplier for greater precision if needed).\r\n        eventValue: Math.round(name === 'CLS' ? delta * 1000 : delta),\r\n        \/\/ The `id` value will be unique to the current page load. When sending\r\n        \/\/ multiple values from the same page (e.g. for CLS), Google Analytics can\r\n        \/\/ compute a total by grouping on this ID (note: requires `eventLabel` to\r\n        \/\/ be a dimension in your report).\r\n        eventLabel: id,\r\n        \/\/ Use a non-interaction event to avoid affecting bounce rate.\r\n        nonInteraction: true,\r\n    });\r\n}\r\naddEventListener('DOMContentLoaded', function() {\r\n    webVitals.getCLS(sendToGoogleAnalytics);\r\n    webVitals.getFID(sendToGoogleAnalytics);\r\n    webVitals.getLCP(sendToGoogleAnalytics);\r\n    webVitals.getFCP(sendToGoogleAnalytics);\r\n    webVitals.getTTFB(sendToGoogleAnalytics);\r\n});\r\n<\/script>\r\n<\/pre>\n
 <\/p>\n
Once you send the data to Google Analytics you can easily check it under the Events report. Note: the CLS number were multiplied by 1000 when we sent to Google Analytics for better accuracy.<\/p>\n
Google Analytics Web Vitals Dashboard<\/h2>\n
I have created a Google Analytics Web Vitals Dashboard<\/a> that can be imported into Google Analytics to view all the Web Vitals data easily. This dashboard will display the numbers for the different Web Vitals (LCP, FID, CLS, FCP and TTFB) and also the pages with worst numbers for each of them.<\/p>\n","protected":false},"excerpt":{"rendered":"
There are a few different ways to track Web Vitals, however the easiest way is using the web-vitals JavaScript library. In this post we will load the web-vitals directly from CDN and use that to track the Core Web Vitals (LCP, FID, CLS) and other Web Vitals (FCP, TTFB) metrics.   Track Web Vitals in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5,138,7],"tags":[161,160,124,159],"class_list":["post-2441","post","type-post","status-publish","format-standard","hentry","category-optimization-tips","category-seo","category-tools","tag-core-web-vitals","tag-google-analytics","tag-snippets","tag-web-vitals"],"yoast_head":"\nTracking Web Vitals in Google Analytics - Virendra's TechTalk<\/title>\n<meta name=\"description\" content=\"There are a few different ways to track Web Vitals, however the easiest way is using the web-vitals JavaScript library. 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ClickHouse may look like a relational database, but it\u2019s engineered for a fundamentally different purpose than Postgres or MySQL, and treating it as a drop-in replacement is the most common\u2026","rel":"","context":"In "Clickhouse"","block_context":{"text":"Clickhouse","link":"https:\/\/www.virendrachandak.com\/techtalk\/category\/clickhouse\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":699,"url":"https:\/\/www.virendrachandak.com\/techtalk\/get-search-query-string-from-search-engines-using-php\/","url_meta":{"origin":2441,"position":2},"title":"Get search query string from search engines using PHP","author":"Virendra Chandak","date":"February 4, 2012","format":false,"excerpt":"I have often come across situations when I would like to implement some functionality based on what the user searched for in a search engine like Google, Bing etc. The search query string is normally passed as GET variables 'q' or 'query'. The function below will return the search query\u2026","rel":"","context":"In "PHP"","block_context":{"text":"PHP","link":"https:\/\/www.virendrachandak.com\/techtalk\/category\/php\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2287,"url":"https:\/\/www.virendrachandak.com\/techtalk\/async-vs-defer\/","url_meta":{"origin":2441,"position":3},"title":"How to remove render blocking JavaScript with defer and async","author":"Virendra Chandak","date":"January 14, 2019","format":false,"excerpt":"With HTML5 there are 2 new boolean attributes for <script> tag which indicates to the browser how the script should be evaluated. The 2 attributes are defer and async. Using these attributes can help improve the page load time by downloading the script in parallel when the page is being\u2026","rel":"","context":"In "JavaScript"","block_context":{"text":"JavaScript","link":"https:\/\/www.virendrachandak.com\/techtalk\/category\/javascript\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":157,"url":"https:\/\/www.virendrachandak.com\/techtalk\/cachebuster-code-in-javascript\/","url_meta":{"origin":2441,"position":4},"title":"Cachebuster code in JavaScript","author":"Virendra Chandak","date":"September 25, 2011","format":false,"excerpt":"The JavaScript, CSS and other files used in a website are often cached by the browser. Sometimes we might want the browser to always fetch the file from the server instead of from the cache. To do this we can use a cachebuster code to make the browser think that\u2026","rel":"","context":"In "JavaScript"","block_context":{"text":"JavaScript","link":"https:\/\/www.virendrachandak.com\/techtalk\/category\/javascript\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":450,"url":"https:\/\/www.virendrachandak.com\/techtalk\/getting-real-client-ip-address-in-php-2\/","url_meta":{"origin":2441,"position":5},"title":"Getting real client IP address in PHP","author":"Virendra Chandak","date":"October 23, 2011","format":false,"excerpt":"Many times we need the visitor's ipaddress for validation, security, spam prevention, etc. Getting the Visitor's ipaddress is very easy in PHP. The simplest way to get the visitor's\/client's ipaddress is using the $_SERVER['REMOTE_ADDR'] or $_SERVER['REMOTE_HOST'] variables. 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