Performance Report for https://www.utsouthwestern.edu/education/students/

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.tb_share_icon_list_wrap > div.tb_share_icon_list > div.tb_share_ico__ > div","body.zf6-landing"]

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.

"[]"

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.utsouthwestern.edu\/education\/students\/\", \"responseTime\": 282.27799999999996}]"

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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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\": 1064.4162000000006, \"groupLabel\": \"Script Evaluation\"}, {\"group\": \"styleLayout\", \"duration\": 822.8919, \"groupLabel\": \"Style & Layout\"}, {\"group\": \"other\", \"duration\": 579.1317000000013, \"groupLabel\": \"Other\"}, {\"group\": \"scriptParseCompile\", \"duration\": 77.3139, \"groupLabel\": \"Script Parsing & Compilation\"}, {\"group\": \"paintCompositeRender\", \"duration\": 49.2788999999998, \"groupLabel\": \"Rendering\"}, {\"group\": \"parseHTML\", \"duration\": 29.25359999999999, \"groupLabel\": \"Parse HTML & CSS\"}, {\"group\": \"garbageCollection\", \"duration\": 17.401500000000016, \"groupLabel\": \"Garbage Collection\"}]"

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.

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For users on slow connections, external scripts dynamically injected via `document.write()` can delay page load by tens of seconds. Learn how to avoid document.write().

"[{\"source\": {\"url\": \"https:\/\/events.utsouthwestern.edu\/widget\/view?schools=utsouthwestern&groups=student-life%2Culs&exclude_types=126921&days=90&num=3&template=modern-no-description\", \"line\": 0, \"type\": \"source-location\", \"column\": 9, \"urlProvider\": \"network\"}}]"

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.

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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.

"[{\"url\": \"https:\/\/www.utsouthwestern.edu\/css\/animate.css?v=33897bb\", \"wastedMs\": 693, \"totalBytes\": 11755}, {\"url\": \"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/font-awesome\/6.4.2\/css\/all.min.css\", \"wastedMs\": 1064, \"totalBytes\": 19463}, {\"url\": \"https:\/\/www.utsouthwestern.edu\/css\/schools-mobile.css?v=328f3c9\", \"wastedMs\": 1426, \"totalBytes\": 43674}]"

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

"[]"

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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Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

["div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div#swiper-wrapper-58363842f42f16d0 > div.slide > div.slide__content > img","div#swiper-wrapper-58363842f42f16d0 > div.slide > div.slide__content > img","div#swiper-wrapper-58363842f42f16d0 > div.slide > div.slide__content > img","div#swiper-wrapper-58363842f42f16d0 > div.slide > div.slide__content > img","div#swiper-wrapper-58363842f42f16d0 > div.slide > div.slide__content > img","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.cards > div.card > div.card__media > img.card__image","div.header__block--site > div.block--logo > a > img.left","div.footer__block > figure.branding > a > img"]

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.

"[{\"url\": \"https:\/\/www.utsouthwestern.edu\/css\/schools-mobile.css?v=328f3c9\", \"totalBytes\": 36238, \"wastedBytes\": 33210, \"wastedPercent\": 91.64446551672236}, {\"url\": \"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/font-awesome\/6.4.2\/css\/all.min.css\", \"totalBytes\": 18814, \"wastedBytes\": 18601, \"wastedPercent\": 98.86711603744976}]"

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

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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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