Performance Report for https://www.wfsb.com/video-gallery/news/weekends-at-the-science-center

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

["span.branding > div.logoDiv > a.trc_desktop_disclosure_link > span","div.fc-dialog > div.fc-dialog-content > div.fc-dialog-scrollable-content > div.fc-preferences-container"]

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.wfsb.com\/video-gallery\/news\/weekends-at-the-science-center\/\", \"responseTime\": 78.411}]"

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

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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.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock"]

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().

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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.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock","div > div.ot-pc-header > div.ot-pc-logo > img","div.ot-pc-footer > div.ot-pc-footer-logo > a > img","div.taboola-feed > div#taboola-below-category-thumbnails > div.tbl-feed-header > div.tbl-feed-header-logo"]

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

"[{\"url\": \"https:\/\/www.wfsb.com\/video-gallery\/news\/weekends-at-the-science-center\", \"wastedMs\": 830.1369999999998}, {\"url\": \"https:\/\/www.wfsb.com\/video-gallery\/news\/weekends-at-the-science-center\/\", \"wastedMs\": 0}]"

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.

"[]"

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 JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

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

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