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· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

56

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.17172] map[node:map[boundingRect:map[bottom:3368 height:2405 left:0 right:1350 top:963 width:1350] lhId:page-33-DIV nodeLabel:Latest Full Episodes S11 E103 04/20/26 The Late Show with Stephen Colbert S1 E… path:1,HTML,1,BODY,6,MAIN,2,DIV selector:body.web-components > main#main-container > div.bottom-components snippet:<div class="bottom-components"> type:node] score:0.081348 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:759 height:759 left:0 right:1350 top:0 width:1350] lhId:page-4-IMG nodeLabel:CIA path:1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,3,LI,0,DIV,1,PICTURE,2,IMG selector:li.slide-js > div.hero_carousel_image > picture > img.lazy snippet:<img class="lazy loaded" src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1440-q80/marquee/104…" data-src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1920-q80/marquee/104…" alt="CIA" data-ll-status="loaded"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:3368 height:2405 left:0 right:1350 top:963 width:1350] lhId:page-33-DIV nodeLabel:Latest Full Episodes S11 E103 04/20/26 The Late Show with Stephen Colbert S1 E… path:1,HTML,1,BODY,6,MAIN,2,DIV selector:body.web-components > main#main-container > div.bottom-components snippet:<div class="bottom-components"> type:node] score:0.075633 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:759 height:759 left:0 right:1350 top:0 width:1350] lhId:page-18-IMG nodeLabel:NCIS: Origins path:1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,1,LI,0,DIV,1,PICTURE,2,IMG selector:li.slide-js > div.hero_carousel_image > picture > img.lazy snippet:<img class="lazy loaded" src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1440-q80/marquee/104…" data-src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1920-q80/marquee/104…" alt="NCIS: Origins" data-ll-status="loaded"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:766 height:300 left:0 right:1350 top:466 width:1350] lhId:page-28-DIV nodeLabel:div.swiper-wrapper > li.slide-js > div.hero_carousel_image > div.hero__gradient path:1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,0,LI,0,DIV,2,DIV selector:div.swiper-wrapper > li.slide-js > div.hero_carousel_image > div.hero__gradient snippet:<div class="hero__gradient"> type:node] score:0.008878 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:759 height:759 left:0 right:1350 top:0 width:1350] lhId:page-8-IMG nodeLabel:NCIS path:1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,0,LI,0,DIV,1,PICTURE,2,IMG selector:li.slide-js > div.hero_carousel_image > picture > img snippet:<img src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1440-q80/marquee/104…" alt="NCIS"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1586 height:339 left:0 right:1350 top:1247 width:1350] lhId:page-34-SECTION nodeLabel:Trending Shows path:1,HTML,1,BODY,6,MAIN,2,DIV,3,SECTION selector:body.web-components > main#main-container > div.bottom-components > section#trending-shows snippet:<section class="js-le-carousel" data-displayid="4c8f06d5-2a20-4d09-b5ab-be03d8b9b578" data-recoid="d95047de-a5c9-4f09-ada0-10004f656509" data-carouselid="393" data-rankmodel="" id="trending-shows" data-title="Trending Shows" data-model="showMovieHybrid" data-position="3"> type:node] score:0.005861 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:759 height:759 left:0 right:1350 top:0 width:1350] lhId:page-4-IMG nodeLabel:CIA path:1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,3,LI,0,DIV,1,PICTURE,2,IMG selector:li.slide-js > div.hero_carousel_image > picture > img.lazy snippet:<img class="lazy loaded" src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1440-q80/marquee/104…" data-src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1920-q80/marquee/104…" alt="CIA" data-ll-status="loaded"> type:node]]] type:subitems]]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:7.46 source:map[column:122780 line:2 type:source-location url:https://www.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:55.699 source:map[type:text value:[unattributed]]] map[reflowTime:1.848 source:map[column:380 line:580 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:0.358 source:map[column:47 line:303 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:3.889 source:map[column:371718 line:1 type:source-location url:https://www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js urlProvider:network]] map[reflowTime:0.524 source:map[column:382276 line:1 type:source-location url:https://www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js urlProvider:network]] map[reflowTime:2.263 source:map[column:387892 line:1 type:source-location url:https://www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js urlProvider:network]] map[reflowTime:0.784 source:map[column:524379 line:1 type:source-location url:https://www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js urlProvider:network]] map[reflowTime:0.944 source:map[column:332 line:412 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:13.333 source:map[column:144999 line:1 type:source-location url:https://www.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
FBI - Behavior div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/_x/w400/CBS_Production_Entertainment_VMS/2026/02/25/AgTY...105.5 KiB96.7 KiB
The Neighborhood - Welcome to the Purse Dog div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/_x/w400/CBS_Production_Entertainment_VMS/2025/08/21/4MZz...91.3 KiB82.5 KiB
DMV - Drive-ory Tower div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/_x/w400/CBS_Production_Entertainment_VMS/2025/08/22/yBz8...77.0 KiB68.2 KiB
CIA - Orbital div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/_x/w400/CBS_Production_Entertainment_VMS/2026/02/25/IOzD...72.1 KiB63.3 KiB
CIA li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048921/61/71/27/ass...229.8 KiB62.9 KiB
Survivor div.swiper-slide > a#106 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/01/38/25/01/91/60/...64.0 KiB54.0 KiB
The Late Show - 4/20/26 (Don Cheadle, Jake Tapper) div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/_x/w400/CBS_Production_Entertainment_VMS/2026/03/28/ALVE...60.5 KiB51.7 KiB
Tracker div.swiper-slide > a#941410057 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/57/47/45/03/04/62/...47.6 KiB37.5 KiB
NCIS li.slide-js > div.hero_carousel_image > picture > img
/thumbnails/photos/w1440-q80/marquee/1048858/60/06/56/ass...200.5 KiB33.7 KiB
The Bold and the Beautiful div.swiper-slide > a#618 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/75/99/69/48/82/03/...36.5 KiB26.5 KiB
Boston Blue div.swiper-slide > a#955739957 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/64/25/89/42/84/73/...34.9 KiB24.8 KiB
Sheriff Country div.swiper-slide > a#955719957 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/64/42/90/73/19/86/...33.2 KiB23.2 KiB
Marshals div.swiper-slide > a#956379957 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/14/69/11/35/67/69/...30.4 KiB21.3 KiB
The Young and the Restless div.swiper-slide > a#617 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w370-q80/show_asset/26/33/57/49/05/62/...30.4 KiB21.2 KiB
NCIS: Sydney li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048907/64/85/93/ass...173.2 KiB21.0 KiB
CBS News 24/7 div.swiper-slide > a#1 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w500-q80/listings/api-managed/assets/p...34.6 KiB18.7 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/local_affiliate/wusa_white_34...15.7 KiB15.3 KiB
Tyler Perry's Divorced Sistas li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048971/68/30/73/ass...106.3 KiB12.9 KiB
NCIS: Origins li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048858/60/08/61/ass...101.6 KiB12.3 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/03/21/49/25b5ff5e-eef...12.4 KiB12.1 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/59/93/30/890c4d26-c81...11.6 KiB11.4 KiB
CBS Sports HQ div.swiper-slide > a#2 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w500-q80/listings/api-managed/assets/p...25.1 KiB9.3 KiB
WUSA div.swiper-slide > a.link > div.thumb-wrapper > img.thumb
/thumbnails/photos/w500-q80/listings/api-managed/assets/p...23.6 KiB7.7 KiB
Tyler Perry's Divorced Sistas div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048971/68/30/78/asse...16.6 KiB7.6 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/78/49/95/3af01ed5-da6...7.9 KiB7.6 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/cbssports_white_348x1...6.1 KiB5.9 KiB
48 hours div.swiper-slide > a#3 > div.thumb-wrapper > img.thumb
/thumbnails/photos/w500-q80/listings/api-managed/assets/p...14.0 KiB4.3 KiB
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/cbsn247stacked_white_...4.2 KiB4.1 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-8-IMG
nodeLabel: NCIS
path: 1,HTML,1,BODY,6,MAIN,1,DIV,0,SECTION,0,UL,0,DIV,0,LI,0,DIV,1,PICTURE,2,IMG
selector: li.slide-js > div.hero_carousel_image > picture > img
snippet: <img src="https://wwwimage-tve.cbsstatic.com/thumbnails/photos/w1440-q80/marquee/104…" alt="NCIS">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/assets/build/css/pages/homepage-f162e57950e37b6b9f8c.min...173.8 KiB418 ms
www.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.js145.5 KiB244 ms
/assets/build/css/fonts/fontsBlack-77105700e8f024a3543e.m...74.0 KiB
/assets/build/css/fonts/fonts-c755de9bfb6c9f19ac8a.min.css122.4 KiB83 ms
www.cbs.com/assets/web-components/static/css/main.1032fe1c.css17.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js1200.0 s257.5 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.js300.0 s189.7 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/_x/w400/CBS_Production_Entertainment_VMS/2026/02/25/AgTY...21600.0 s105.8 KiB
/_x/w400/CBS_Production_Entertainment_VMS/2025/08/21/4MZz...21600.0 s91.6 KiB
/_x/w400/CBS_Production_Entertainment_VMS/2025/08/22/yBz8...21600.0 s77.2 KiB
/_x/w400/CBS_Production_Entertainment_VMS/2026/02/25/IOzD...21600.0 s72.4 KiB
/signals/config/397113878058374?v=2.9.303&r=stable&domain...1200.0 s44.5 KiB
/_x/w400/CBS_Production_Entertainment_VMS/2026/03/28/ALVE...21600.0 s61.0 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.557.js?utv=ut4.46.202509231900300.0 s32.8 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.369.js?utv=ut4.46.202509231900300.0 s17.1 KiB
cdn.privacy.paramount.com/dist/optanon-v2.0.0.js300.0 s9.0 KiB
assets.kochava.com/kochava.js/v2.2/kochava.min.js?c=0.037662960590408193600.0 s8.9 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.521.js?utv=ut4.46.202509231900300.0 s7.2 KiB
global.ketchcdn.com/web/v3/config/cbs/cbs/boot.js1200.0 s4.9 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.560.js?utv=ut4.46.202507301728300.0 s3.3 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.526.js?utv=ut4.46.202509231900300.0 s1.7 KiB
/utag/tiqapp/utag.v.js?a=cbsi/cbstve/202509231900&cb=1776...300.0 s433 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB
sb.scorecardresearch.com/internal-c2/default/cs.js86400.0 s359 B
/assets/splice_preview/2026/02/25/_6MjyjoMBSyGOF5JU1f2FoB...900.0 s0 B
/assets/splice_preview/2026/02/25/YQbq5jt_nLnsPRwDfMWUZbU...900.0 s0 B
/assets/splice_preview/2026/02/25/vq9m1mINyvEGQ7o49E1x5Ta...900.0 s0 B
/assets/splice_preview/2026/02/25/IOzD7ZgiH_KXaBGnj_HajzR...900.0 s0 B
/assets/splice_preview/2026/02/25/_6MjyjoMBSyGOF5JU1f2FoB...900.0 s0 B
/assets/splice_preview/2026/02/25/YQbq5jt_nLnsPRwDfMWUZbU...900.0 s0 B
/assets/splice_preview/2026/02/25/_6MjyjoMBSyGOF5JU1f2FoB...900.0 s0 B
/assets/splice_preview/2026/02/25/_6MjyjoMBSyGOF5JU1f2FoB...900.0 s0 B
/assets/splice_preview/2026/02/25/vq9m1mINyvEGQ7o49E1x5Ta...900.0 s0 B
/assets/splice_preview/2026/02/25/_6MjyjoMBSyGOF5JU1f2FoB...900.0 s0 B
/assets/splice_preview/2026/02/25/vq9m1mINyvEGQ7o49E1x5Ta...900.0 s0 B
/assets/splice_preview/2026/02/25/YQbq5jt_nLnsPRwDfMWUZbU...900.0 s0 B
/assets/splice_preview/2026/02/25/IOzD7ZgiH_KXaBGnj_HajzR...900.0 s0 B

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff25.0 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 250 ms
URLTime Spent
cbs.com/250 ms
www.cbs.com/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Latest Full Episodes S11 E103 04/20/26 The Late Show with Stephen Colbert S1 E… body.web-components > main#main-container > div.bottom-components
0.081
Latest Full Episodes S11 E103 04/20/26 The Late Show with Stephen Colbert S1 E… body.web-components > main#main-container > div.bottom-components
0.076
div.swiper-wrapper > li.slide-js > div.hero_carousel_image > div.hero__gradient div.swiper-wrapper > li.slide-js > div.hero_carousel_image > div.hero__gradient
0.009
Trending Shows body.web-components > main#main-container > div.bottom-components > section#trending-shows
0.006

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 280 ms 390.5 KiB
URLTransfer SizeEst Savings
/assets/build/css/pages/homepage-f162e57950e37b6b9f8c.min...173.6 KiB157.5 KiB
/assets/build/css/fonts/fonts-c755de9bfb6c9f19ac8a.min.css121.9 KiB121.9 KiB
/assets/build/css/fonts/fontsBlack-77105700e8f024a3543e.m...73.7 KiB73.7 KiB
22.1 KiB22.1 KiB
www.cbs.com/assets/web-components/static/css/main.1032fe1c.css17.6 KiB15.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 320 ms 875.8 KiB
URLTransfer SizeEst Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB177.0 KiB
www.cbs.com/assets/web-components/static/js/main.44c6a70a.js208.9 KiB170.3 KiB
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js257.0 KiB148.6 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.js189.3 KiB112.0 KiB
www.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.js145.3 KiB93.3 KiB
www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js159.2 KiB78.9 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB43.4 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.557.js?utv=ut4.46.20250923190032.4 KiB31.6 KiB
/signals/config/397113878058374?v=2.9.303&r=stable&domain...44.4 KiB20.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other1.7 s
Script Evaluation1.1 s
Style & Layout226 ms
Script Parsing & Compilation193 ms
Rendering107 ms
Garbage Collection52 ms
Parse HTML & CSS39 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
www.cbs.com/assets/build/js/vue-43b7e274d460f22980f2.min.js361.3 KiB
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js257.5 KiB
/assets/splice_preview/2026/02/25/YQbq5jt_nLnsPRwDfMWUZbU...256.4 KiB
/thumbnails/photos/w1440-q80/marquee/1048921/61/71/27/ass...230.3 KiB
www.cbs.com/assets/build/js/show/videoTop-81906c1b7d9b47808f13.min.js210.3 KiB
www.cbs.com/assets/web-components/static/js/main.44c6a70a.js209.2 KiB
/thumbnails/photos/w1440-q80/marquee/1048858/60/06/56/ass...200.9 KiB
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.js189.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
NCIS li.slide-js > div.hero_carousel_image > picture > img
/thumbnails/photos/w1440-q80/marquee/1048858/60/06/56/ass...
NCIS: Origins li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048858/60/08/61/ass...
NCIS: Sydney li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048907/64/85/93/ass...
CIA li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048921/61/71/27/ass...
Tyler Perry's Divorced Sistas li.slide-js > div.hero_carousel_image > picture > img.lazy
/thumbnails/photos/w1440-q80/marquee/1048971/68/30/73/ass...
NCIS div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048858/60/06/60/asse...
NCIS: Origins div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048858/60/08/64/asse...
NCIS: Sydney div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048907/64/85/97/asse...
CIA div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048921/61/71/31/asse...
Tyler Perry's Divorced Sistas div.hero__content-slide-wrapper > div.hero__grid > h1.logo > img.hp-marquee-logo
/thumbnails/photos/w419-q80/marquee/1048971/68/30/78/asse...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/78/49/95/3af01ed5-da6...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/03/21/49/25b5ff5e-eef...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/59/93/30/890c4d26-c81...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/cbssports_white_348x1...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/channel/cbsn247stacked_white_...
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
/thumbnails/photos/w370-q80/local_affiliate/wusa_white_34...

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●JavaScript execution time 1.1 s
●Avoid long main-thread tasks 8 long tasks found
●Avoid non-composited animations 1 animated element found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 80 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
○INP breakdown
○User Timing marks and measures
77

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
CBS CBS News 24/7 CBS Sports HQ 48 Hours Judge Judy Hot Bench CBS Sports Golazo… nav.header__nav > ul.navigation > li.header__nav--withsubMenu > ul.header__subnav

When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
CBS CBS News 24/7 CBS Sports HQ 48 Hours Judge Judy Hot Bench CBS Sports Golazo… nav.header__nav > ul.navigation > li.header__nav--withsubMenu > ul.header__subnav

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.label > img div.onnow-wrapper > div.onnow-wrapper-inside > div.label > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Your browser … main#main-container > div.top-components > section.hero__wrapper > ul#hero-slider
NEW EPISODE TONIGHT 8/7C From murder & espionage to terrorism & stolen submari… section#hero-content > div.hero__content-wrapper > div.hero__lockup > ul#hero-content-slider
Follow Us footer > div.container > div.flexWrapper > ul.block
div.flexWrapper > ul.block > div.block > ul

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
CBS ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
CBS News 24/7 ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
CBS Sports HQ ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
48 Hours ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
Judge Judy ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
Hot Bench ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
CBS Sports Golazo Network ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
Inside Edition ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
60 Minutes ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
ET ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
UEFA Champions League ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
Car Chase ul.navigation > li.header__nav--withsubMenu > ul.header__subnav > li
Your browser … section.hero__wrapper > ul#hero-slider > div.swiper-wrapper > li.slide-js
Your browser … section.hero__wrapper > ul#hero-slider > div.swiper-wrapper > li.slide-js
NEW EPISODE TONIGHT 8/7C From murder & espionage to terrorism & stolen submari… div.hero__lockup > ul#hero-content-slider > div.swiper-wrapper > li.slide-js
NEW EPISODE TONIGHT 9/8C NCIS: ORIGINS follows a young Leroy Jethro Gibbs in t… div.hero__lockup > ul#hero-content-slider > div.swiper-wrapper > li.slide-js
NEW EPISODE TONIGHT 10/9C A brilliant and eclectic team of NCIS agents and the… div.hero__lockup > ul#hero-content-slider > div.swiper-wrapper > li.slide-js
CATCH UP ON THE LATEST EPISODE From Dick Wolf and the team behind FBI, Tom Ell… div.hero__lockup > ul#hero-content-slider > div.swiper-wrapper > li.slide-js
NEW EPISODE EVERY WEDNESDAY Five friends find strength in their sisterhood as … div.hero__lockup > ul#hero-content-slider > div.swiper-wrapper > li.slide-js

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Shows div.block > ul > li > a
Live TV div.block > ul > li > a
Schedule div.block > ul > li > a
TV Provider div.block > ul > li > a
Paramount+ div.block > ul > li > a
CBS News div.block > ul > li > a
CBS Sports div.block > ul > li > a
Terms of Use div.block > ul > li > a
Privacy Policy div.block > ul > li > a
Help/Contact Us div.block > ul > li > a
Show Feedback div.block > ul > li > a
Closed Captioning div.block > ul > li > a
Audio Description div.block > ul > li > a
Ratings Guidelines div.block > ul > li > a
About Paramount div.block > ul > li > a

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●No element has a `[tabindex]` value greater than 0
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Elements with visible text labels have matching accessible names.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

Trust and Safety

Users are mistrustful of or confused by sites that request their location without context. Consider tying the request to a user action instead. Learn more about the geolocation permission.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js line 1, col 342179

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
tags.tiqcdn.com/utag/cbsi/cbstve/prod/utag.369.js?utv=ut4.46.202509231900 line 6, col 4083

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.cbs.com/assets/web-components/static/js/main.44c6a70a.js
www.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.jswww.cbs.com/assets/build/js/homepage-dd2003fdced2f0a33cfd.min.js.map
www.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.jswww.cbs.com/assets/build/js/core-6be7b1c9adf2c7b0d9d3.min.js.map
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.label > img div.onnow-wrapper > div.onnow-wrapper-inside > div.label > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img
div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img div.onnow-wrapper > div.onnow-wrapper-inside > div.channel-logo > img

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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