Performance Report for http://www.hackensackumc.org/en/services/laboratory-services

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

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Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more about the Cumulative Layout Shift metric.

"[{\"newEngineResult\": {\"cumulativeLayoutShift\": 0.06353755519155611, \"cumulativeLayoutShiftMainFrame\": 0.06353755519155611}, \"newEngineResultDiffered\": false, \"cumulativeLayoutShiftMainFrame\": 0.06353755519155611}]"

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn how to avoid an excessive DOM size.

["ul.clearfix > li.level2 > div.navigation-title > a","body.mobile-device"]

First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric.

"[{\"url\": \"http:\/\/www.hackensackumc.org\/en\/services\/laboratory-services\", \"resolution\": \"Allowed\"}]"

First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.

"[{\"url\": \"http:\/\/www.hackensackumc.org\/en\/services\/laboratory-services\", \"resolution\": \"Allowed\"}]"

Leverage the `font-display` CSS feature to ensure text is user-visible while webfonts are loading. Learn more about `font-display`.

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Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

"[{\"url\": \"https:\/\/www.hackensackmeridianhealth.org\/en\/locations\/hackensack-university-medical-center\", \"responseTime\": 916.452}]"

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric

"[{\"url\": \"http:\/\/www.hackensackumc.org\/en\/services\/laboratory-services\", \"resolution\": \"Allowed\"}]"

This is the largest contentful element painted within the viewport. Learn more about the Largest Contentful Paint element

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Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers. Learn how to use modern JavaScript

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Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

"[{\"group\": \"scriptEvaluation\", \"duration\": 2336.771099999934, \"groupLabel\": \"Script Evaluation\"}, {\"group\": \"styleLayout\", \"duration\": 1243.1616000000006, \"groupLabel\": \"Style & Layout\"}, {\"group\": \"other\", \"duration\": 1238.237400000001, \"groupLabel\": \"Other\"}, {\"group\": \"scriptParseCompile\", \"duration\": 206.6754, \"groupLabel\": \"Script Parsing & Compilation\"}, {\"group\": \"parseHTML\", \"duration\": 167.17920000000052, \"groupLabel\": \"Parse HTML & CSS\"}, {\"group\": \"garbageCollection\", \"duration\": 57.51149999999994, \"groupLabel\": \"Garbage Collection\"}, {\"group\": \"paintCompositeRender\", \"duration\": 49.94279999999945, \"groupLabel\": \"Rendering\"}]"

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

[]

Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats.

["div.page-subheader > section.landing-row > header.secondary-header > div.mobile-image","div.sub-section-branding > div.img-wrapper > a > img.secondary-logo","div.row > div.col-md-7 > div.img-container > img.card-img","div.row > div.col-md-7 > div.img-container > img.card-img","body.mobile-device > div#wrapper","div.row > div.component > div.component-content > img"]

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn how to defer offscreen images.

["div.row > div.col-md-7 > div.img-container > img.card-img","div.row > div.col-md-7 > div.img-container > img.card-img","div.gmnoprint > button.gm-svpc > div > img"]

If the LCP element is dynamically added to the page, you should preload the image in order to improve LCP. Learn more about preloading LCP elements.

["body.mobile-device > div#wrapper"]

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

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Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn how to eliminate render-blocking resources.

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Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

"[{\"url\": \"https:\/\/www.hackensackmeridianhealth.org\/en\/locations\/hackensack-university-medical-center\", \"responseTime\": 916.452}]"

Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric.

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Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade.

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Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn how to minimize third-party impact.

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Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric.

[]

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

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Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

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Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

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Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

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HTTP/2 offers many benefits over HTTP/1.1, including binary headers and multiplexing. Learn more about HTTP/2.

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Optimized images load faster and consume less cellular data. Learn how to efficiently encode images.

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Consider marking your touch and wheel event listeners as `passive` to improve your page's scroll performance. Learn more about adopting passive event listeners.

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Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn how to preconnect to required origins.

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Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images.

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Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes. Learn more about text compression.

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