Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

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.

Request	Cache TTL	Transfer Size
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.js?2026322	86400.0 s	285.9 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
/signals/config/798813320263950?v=2.9.303&r=stable&domain...	1200.0 s	44.8 KiB
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.css?2026322	86400.0 s	49.2 KiB
az416426.vo.msecnd.net/scripts/a/ai.0.js	1800.0 s	21.6 KiB
cdn.sy57d8wi.com/prod/gmg/g2i.min.js?2026322	86400.0 s	43.4 KiB
s0.2mdn.net/879366/express_html_inpage_rendering_lib_200_287.js	86400.0 s	40.9 KiB
ep2.adtrafficquality.google/sodar/VFc2VJAc.js	3000.0 s	14.0 KiB
pagead2.googlesyndication.com/pagead/show_companion_ad.js?fcd=true	3600.0 s	11.7 KiB
cdn.a3kvau184uea.com/prod/gmg/fp.min.js?2026322	86400.0 s	22.8 KiB
lasvegassun.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?	14400.0 s	13.0 KiB
tags.srv.stackadapt.com/events.js	5.0 s	8.1 KiB
/wp-content/uploads/sites/1/2026/04/KentuckyDerbyParty320...	14400.0 s	10.8 KiB
s0.2mdn.net/879366/DcmEnabler_01_262.js	86400.0 s	11.5 KiB
cdn.q0losid.com/prod/gmg/loader.min.js	86400.0 s	10.8 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
cdn.pranmcpkx.com/index.js	86400.0 s	2.6 KiB
paywall-ad-bucket.s3.amazonaws.com/ad_300_250.jpg	0.0 ms	1.0 KiB
static.addtoany.com/menu/page.js	86400.0 s	2.2 KiB
/pagead/js/r20260421/r20110914/client/qs_click_protection...	1209600.0 s	8.9 KiB
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js	1209600.0 s	8.4 KiB
/pagead/js/r20260421/r20110914/elements/html/omrhp_fy2021.js	1209600.0 s	3.3 KiB
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.3 KiB
static.addtoany.com/menu/svg/icons/x.js	864000.0 s	781 B
/tr/?id=798813320263950&ev=PageView&dl=https%3A%2F%2Flasv...	0.0 ms	16 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.

URL	Est Savings
/s/materialsymbolsoutlined/v331/kJF1BvYX7BgnkSrUwT8OhrdQw...	35 ms

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:1.154 source:map[column:30255 line:2 type:source-location url:https://assets.lasvegassun.com/media/assets/js/jquery-3.1.1.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:39.53 source:map[type:text value:[unattributed]]] map[reflowTime:0.395 source:map[column:19838 line:2 type:source-location url:https://assets.lasvegassun.com/media/assets/js/jquery-3.1.1.min.js urlProvider:network]] map[reflowTime:0.423 source:map[column:19133 line:2 type:source-location url:https://assets.lasvegassun.com/media/assets/js/jquery-3.1.1.min.js urlProvider:network]] map[reflowTime:0.237 source:map[column:19216 line:2 type:source-location url:https://assets.lasvegassun.com/media/assets/js/jquery-3.1.1.min.js urlProvider:network]] map[reflowTime:0.099 source:map[column:40 line:80 type:source-location url:https://lasvegassun.com/ urlProvider:network]] map[reflowTime:0.495 source:map[column:45350 line:7 type:source-location url:https://cdn.a3kvau184uea.com/prod/gmg/fp.min.js?2026322 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.

	URL	Resource Size	Est Savings
A woman was found dead on a sidewalk in east Las Vegas early Tuesday morning, M… `ul#scrollling-story-section > li.story-entry > div > p.teaser`	s0.2mdn.net/sadbundle/17433292247788892672/F1_mm.png	114.0 KiB	106.0 KiB
ASSOCIATED PRESS `ul#scrollling-story-section > li.story-entry > div > p.byline`	s0.2mdn.net/sadbundle/17433292247788892672/lockup.png	88.5 KiB	81.0 KiB
Resorts World unleashes a spotted army for Earth Day `div.mobile-content > div.leadVisual > a > img`	/media/img/photos/2026/04/22/0422_sun_ResortsWorldLadyBug...	118.4 KiB	79.3 KiB
The beat goes on for Foothill’s marching band dynasty. Next stop: Philadelphia `ul#scrollling-story-section > li.story-entry > div > p.headline`	s0.2mdn.net/sadbundle/17433292247788892672/F2_moment1.png	84.1 KiB	75.5 KiB
Apr 22, 2026 (9:21 a.m.) `ul#scrollling-story-section > li.story-entry > div > p.pubdate`	s0.2mdn.net/sadbundle/17433292247788892672/F1_bg2.jpg	43.9 KiB	35.9 KiB
Utah Mammoth fans buzzing about playoff game with Golden Knights `ul#scrollling-story-section > li.story-entry > div > p.headline`	s0.2mdn.net/sadbundle/17433292247788892672/F1_bokeh.png	42.6 KiB	34.6 KiB
Smith's World: 042226 smith cartoon Apple `ul > li > a > img`	s0.2mdn.net/sadbundle/17433292247788892672/F1_bg1.jpg	41.9 KiB	33.9 KiB
Utah Mammoth fans buzzing about playoff game with Golden Knights `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/04/21/0421_AP_VGKUtahGame2_01_r400...	45.9 KiB	31.4 KiB
Raiders finally have their act together, setting up Fernando Mendoza to succeed `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/01/19/CFP_National_Championship_Fo...	44.2 KiB	29.6 KiB
Apr 22, 2026 (2 a.m.) `ul#scrollling-story-section > li.story-entry > div > p.pubdate`	s0.2mdn.net/sadbundle/17433292247788892672/F4_copy.png	32.9 KiB	26.6 KiB
BY LAS VEGAS SUN STAFF `ul#scrollling-story-section > li.story-entry > div > p.byline`	s0.2mdn.net/sadbundle/17433292247788892672/F1__ship.png	32.5 KiB	26.3 KiB
Senators, including Cortez Masto, call for blocking Trump coins `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/04/21/Coins_r400x225.jpg?4bacb8d97...	36.0 KiB	21.4 KiB
The beat goes on for Foothill’s marching band dynasty. Next stop: Philadelphia `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/04/17/0417_sun_FoothillMarchingBan...	33.9 KiB	19.2 KiB
The NHL playoffs are headed to Utah for the first time and the state is buzzing… `ul#scrollling-story-section > li.story-entry > div > p.teaser`	s0.2mdn.net/sadbundle/17433292247788892672/F1_background.jpg	26.9 KiB	19.0 KiB
Southern Poverty Law Center facing new legal challenge from US `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/04/21/AP26111797031296_r400x225.jp...	33.3 KiB	18.7 KiB
Cortez Masto confronts RFK Jr. over policies threatening health care stability `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/media/img/photos/2026/04/22/cortezmasto_r400x225.jpg?4ba...	28.4 KiB	13.8 KiB
Apr 22, 2026 (2:05 p.m.) `ul#scrollling-story-section > li.story-entry > div > p.pubdate`	s0.2mdn.net/sadbundle/17433292247788892672/F1_copy.png	16.9 KiB	13.7 KiB
What to do in Las Vegas this week: April 23-29 `div.mobile-content > ul#scrollling-story-section > li.story-entry > img`	/img/croppedphotos/2021/11/03/narrow__r400x225.jpg?4bacb8...	25.9 KiB	11.3 KiB
body > div.GoogleActiveViewElement > a > img `body > div.GoogleActiveViewElement > a > img`	/wp-content/uploads/sites/1/2026/04/KentuckyDerbyParty320...	10.3 KiB	7.7 KiB
Las Vegas Sun Logo `div#header-mobile > div.banner > a > img`	assets.lasvegassun.com/media/assets/images/mobile/masthead_logo.png	14.8 KiB	7.5 KiB

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.

URL	Transfer Size	Duration
assets.lasvegassun.com/media/assets/js/jquery-3.1.1.min.js	31.2 KiB	1.7 s
assets.lasvegassun.com/media/assets/css/core-120424a.css	5.3 KiB	809 ms
cdn.q0losid.com/prod/gmg/loader.min.js	10.8 KiB	905 ms

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

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 160 ms 5.3 KiB

URL	Transfer Size	Est Savings
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.css?2026322	49.2 KiB	5.3 KiB

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: 330 ms 48.7 KiB

URL	Transfer Size	Est Savings
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.css?2026322	48.7 KiB	48.7 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: 3.0 s 611.3 KiB

URL	Transfer Size	Est Savings
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.js?2026322	285.4 KiB	182.0 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	97.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37&l=MG2DL	120.7 KiB	85.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37	120.7 KiB	63.1 KiB
www.googletagmanager.com/gtag/js?id=G-04RV5RCRPZ&cx=c&gtm=4e64k1	170.1 KiB	62.0 KiB
fundingchoicesmessages.google.com/i/5332?ers=3	68.5 KiB	36.3 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.3 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	73.1 KiB	30.2 KiB
cdn.sy57d8wi.com/prod/gmg/g2i.min.js?2026322	42.9 KiB	21.9 KiB

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.js?2026322	2.2 s	2.0 s	210 ms
Unattributable	1.1 s	97 ms	0.0 ms
lasvegassun.com/	980 ms	90 ms	34 ms
cdn.a3kvau184uea.com/prod/gmg/fp.min.js?2026322	883 ms	447 ms	9.4 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	882 ms	677 ms	127 ms
fundingchoicesmessages.google.com/i/5332?ers=3	630 ms	597 ms	29 ms
www.googletagmanager.com/gtag/js?id=G-04RV5RCRPZ&cx=c&gtm=4e64k1	451 ms	367 ms	76 ms
lasvegassun.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	370 ms	337 ms	10 ms
/pagead/managed/js/activeview/current/ufs_web_display.js	364 ms	306 ms	45 ms
assets.lasvegassun.com/media/assets/js/jquery-3.1.1.min.js	334 ms	174 ms	13 ms
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37	232 ms	162 ms	67 ms
connect.facebook.net/en_US/fbevents.js	207 ms	150 ms	56 ms
az416426.vo.msecnd.net/scripts/a/ai.0.js	183 ms	114 ms	45 ms
/signals/config/798813320263950?v=2.9.303&r=stable&domain...	159 ms	133 ms	26 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	126 ms	110 ms	15 ms
cdn.sy57d8wi.com/prod/gmg/g2i.min.js?2026322	113 ms	83 ms	29 ms
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37&l=MG2DL	84 ms	36 ms	47 ms
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	59 ms	34 ms	5.1 ms
ep2.adtrafficquality.google/sodar/sodar2.js	58 ms	52 ms	3.0 ms

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.

Category	Time Spent
Script Evaluation	6.2 s
Other	1.2 s
Style & Layout	1.1 s
Script Parsing & Compilation	869 ms
Rendering	181 ms
Garbage Collection	168 ms
Parse HTML & CSS	118 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 reason	Failure 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.

URL	Transfer Size
/s/materialsymbolsoutlined/v331/kJF1BvYX7BgnkSrUwT8OhrdQw...	309.7 KiB
cdn.e3fbosf1tz3d.xyz/prod/gmg/t8y9347t.min.js?2026322	285.9 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB
www.googletagmanager.com/gtag/js?id=G-04RV5RCRPZ&cx=c&gtm=4e64k1	170.2 KiB
s0.2mdn.net/sadbundle/17433292247788892672/F3_moment2.png	159.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37	121.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-MPMCB37&l=MG2DL	120.7 KiB
/media/img/photos/2026/04/22/0422_sun_ResortsWorldLadyBug...	118.8 KiB
assets.lasvegassun.com/media/assets/images/home/default/lasvegassun-logo.svg	116.4 KiB
s0.2mdn.net/sadbundle/17433292247788892672/F1_mm.png	114.0 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
Slide image `div.mobile-content > div.gallery-wrapper > figure.slide-figure > img.slide-img`	/media/img/photos/2026/04/22/0422_sun_ResortsWorldLadyBug...

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●LCP breakdown

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify JavaScript

●User Timing marks and measures 7 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 2 animated elements found

●Network Requests

●Network Round Trip Times 250 ms

●Server Backend Latencies 490 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 210 ms

●Avoid large layout shifts 2 layout shifts found

○INP breakdown

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
© Las Vegas Sun Mobile `div#container > footer > div#footer-mobile > p`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
U.S. & World `div.mobile-content > div#us-world-module > div.top-border > h3.sectionHeader`

These are opportunities to improve keyboard navigation in your application.

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
Log in `div.acct-box > ul > li > a#MG2login`
Latest editorial cartoon by Mike Smith » `div#opinion-module > 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>`

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●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

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Document has a main landmark.

●Image elements do not have `[alt]` attributes that are redundant text.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○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

○`<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

○Identical links have the same purpose.

○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.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
Smith's World: 042226 smith cartoon Apple `ul > li > a > img`	/media/img/photos/2026/04/21/Smith_C20260422_t500x300.jpg...	500 x 300 (1.67)	413 x 300 (1.38)

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 / Warning	Source
SharedStorage	lasvegassun.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	lasvegassun.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	lasvegassun.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
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AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

100

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.

○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

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`