Performance Report for https://www.luminishealth.org/en/give-blood

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

"[{\"newEngineResult\": {\"cumulativeLayoutShift\": 0.11860103546094863, \"cumulativeLayoutShiftMainFrame\": 0.11860103546094863}, \"newEngineResultDiffered\": false, \"cumulativeLayoutShiftMainFrame\": 0.11860103546094863}]"

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

["div.media > div.field > div.field__item > img","body.path-node"]

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

"[]"

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

"[]"

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

"[{\"url\": \"https:\/\/use.typekit.net\/af\/ae3b90\/00000000000000003b9b2b2d\/27\/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3\", \"wastedMs\": 335.6480002403259}, {\"url\": \"https:\/\/use.typekit.net\/af\/c5fee7\/00000000000000003b9b2b35\/27\/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3\", \"wastedMs\": 604.6380000114441}, {\"url\": \"https:\/\/use.typekit.net\/af\/871838\/00000000000000003b9b2b30\/27\/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3\", \"wastedMs\": 700.215000629425}, {\"url\": \"https:\/\/use.typekit.net\/af\/3a0771\/00000000000000003b9b2b2f\/27\/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3\", \"wastedMs\": 758.0949997901917}]"

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.luminishealth.org\/en\/give-blood\", \"responseTime\": 26.598}]"

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

"[]"

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

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These DOM elements contribute most to the CLS of the page. Learn how to improve CLS

["div.dialog-off-canvas-main-canvas > div#page-wrapper > div#page > div#main-wrapper","div#page > header#header > div.site-header__inner__container > div.primary-nav-and-account-button-wrapper"]

["div.dialog-off-canvas-main-canvas > div#page-wrapper > div#page > div#main-wrapper","div#page > header#header > div.site-header__inner__container > div.primary-nav-and-account-button-wrapper"]

Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint. Learn more about optimal lazy loading.

["div.field__item > div.paragraph > div.field > img"]

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\": 1076.3154000000006, \"groupLabel\": \"Script Evaluation\"}, {\"group\": \"other\", \"duration\": 628.529700000001, \"groupLabel\": \"Other\"}, {\"group\": \"styleLayout\", \"duration\": 352.2005999999996, \"groupLabel\": \"Style & Layout\"}, {\"group\": \"scriptParseCompile\", \"duration\": 150.44039999999995, \"groupLabel\": \"Script Parsing & Compilation\"}, {\"group\": \"parseHTML\", \"duration\": 87.05369999999984, \"groupLabel\": \"Parse HTML & CSS\"}, {\"group\": \"garbageCollection\", \"duration\": 43.36679999999999, \"groupLabel\": \"Garbage Collection\"}, {\"group\": \"paintCompositeRender\", \"duration\": 16.3785, \"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.field > div.field__item > div.paragraph > div.field"]

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

"[]"

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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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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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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A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies.

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

["div.field__item > div.paragraph > div.field > img"]

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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