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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

30

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.

RequestCache TTLTransfer Size
a.pub.network/stltoday-com/prebid.js1800.0 s192.7 KiB
a.pub.network/stltoday-com/pubfig.engine.mobile.js1800.0 s151.6 KiB
www.stltoday.com/shared-content/art/tncms/api/access.bc44532080f114b4be74.js600.0 s31.0 KiB
a.pub.network/stltoday-com/pubfig.min.js1800.0 s26.3 KiB
tagan.adlightning.com/leeenterprises/op.js3600.0 s15.0 KiB
cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano-ui.js86400.0 s29.2 KiB
www.stltoday.com/shared-content/art/stats/common/tracker.js600.0 s3.4 KiB
www.stltoday.com/shared-content/art/tncms/user/user.js600.0 s1.8 KiB
www.stltoday.com/shared-content/art/tncms/tracking.js600.0 s1.4 KiB
www.stltoday.com/shared-content/art/tncms/api/messaging662.js600.0 s1.1 KiB
www.stltoday.com/shared-content/art/tncms/api/csrf.js600.0 s795 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB

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:27.008 source:map[column:185008 line:2 type:source-location url:https://cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano.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:46.702 source:map[type:text value:[unattributed]]] map[reflowTime:1.487 source:map[column:380 line:580 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:1.133 source:map[column:47 line:303 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:1.409 source:map[column:3528 line:6 type:source-location url:https://bloximages.newyork1.vip.townnews.com/stltoday.com/shared-content/art/tncms/templates/libraries/flex/components/plugins/resources/scripts/common.08a61544f369cc43bf02e71b2d10d49f.js urlProvider:network]] map[reflowTime:0.711 source:map[column:332 line:412 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:27.008 source:map[column:51681 line:1 type:source-location url:https://bloximages.newyork1.vip.townnews.com/stltoday.com/shared-content/art/tncms/templates/libraries/flex/components/jquery/resources/scripts/jquery.min.d6d18fcf88750a16d256e72626e676a6.js urlProvider:network]] map[reflowTime:0.216 source:map[column:30031 line:1 type:source-location url:https://cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano-ui.js urlProvider:network]] map[reflowTime:1.562 source:map[column:62355 line:1 type:source-location url:https://cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano-ui.js urlProvider:network]] map[reflowTime:0.53 source:map[column:62714 line:1 type:source-location url:https://cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano-ui.js urlProvider:network]]]

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-0-IMG
nodeLabel: Lots drawn, St. Charles declares winner in tied council race
path: 1,HTML,1,BODY,21,DIV,4,DIV,2,DIV,2,SECTION,3,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,FIGURE,0,DIV,0,A,0,IMG
selector: figure.photo > div.image > a.tnt-asset-link > img.img-responsive
snippet: <img src="https://bloximages.newyork1.vip.townnews.com/stltoday.com/content/tncms/as…" alt="Lots drawn, St. Charles declares winner in tied council race" class="img-responsive full default lazyautosizes lazyloaded" width="1763" height="992" data-sizes="auto" data-srcset="https://bloximages.newyork1.vip.townnews.com/stltoday.com/content/tncms/as…" sizes="412px" srcset="https://bloximages.newyork1.vip.townnews.com/stltoday.com/content/tncms/as…">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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
www.stltoday.com/shared-content/art/stats/common/tracker.js3.4 KiB
/leetemplates.com/content/tncms/live/global/resources/scr...907 B876 ms
www.stltoday.com/shared-content/art/tncms/tracking.js1.4 KiB152 ms
cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano.js78.1 KiB1.9 s
/stltoday.com/shared-content/art/tncms/templates/librarie...1.5 KiB
/stltoday.com/content/tncms/live/libraries/flex/component...325 B
/stltoday.com/shared-content/art/tncms/templates/librarie...12.5 KiB
/stltoday.com/content/tncms/live/libraries/flex/component...3.9 KiB151 ms
/stltoday.com/shared-content/art/tncms/templates/librarie...311 B
/recaptcha/enterprise.js?render=6LdF3BEhAAAAAEQUmLciJe0Qw...1.1 KiB778 ms

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

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
‘Big Ron,’ food trucker who fed tornado victims, killed in Ferguson drive-by figure.photo > div.image > a.tnt-asset-link > img.img-responsive
/stltoday.com/content/tncms/assets/v3/editorial/3/78/378b...28.2 KiB13.6 KiB
Father charged in death of 3-year-old boy who fell from Central West End high-r… figure.photo > div.image > a.tnt-asset-link > img.img-responsive
/stltoday.com/content/tncms/assets/v3/editorial/8/dc/8dcc...26.5 KiB11.8 KiB
Income tax repeal heads to Missouri voters following House vote figure.photo > div.image > a.tnt-asset-link > img.img-responsive
/stltoday.com/content/tncms/assets/v3/editorial/4/e7/4e72...24.5 KiB9.8 KiB
St. Louis OKs permit for $3B Armory data center, with list of conditions figure.photo > div.image > a.tnt-asset-link > img.img-responsive
/stltoday.com/content/tncms/assets/v3/editorial/0/51/0513...22.8 KiB8.1 KiB
State hoped to net tons of carp at Creve Coeur Lake but came up fishless figure.photo > div.image > a.tnt-asset-link > img.img-responsive
/stltoday.com/content/tncms/assets/v3/editorial/4/4b/44bd...20.7 KiB6.0 KiB
Where your story lives div.wrap > a > div.back > img.img-responsive
/stltoday.com/content/tncms/live/libraries/flex/component...5.3 KiB4.3 KiB

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: 1.0 s
URLTime Spent
stltoday.com/1.0 s
www.stltoday.com/0.0 ms

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

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.

Diagnostics

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: 540 ms 1.0 MiB
URLTransfer SizeEst Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB177.1 KiB
a.pub.network/stltoday-com/prebid.js192.1 KiB157.8 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB143.9 KiB
a.pub.network/stltoday-com/pubfig.engine.mobile.js151.1 KiB121.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-TDWDC2203.3 KiB67.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-5MTD44X&gtm=4e64h1120.6 KiB66.5 KiB
www.googletagmanager.com/gtag/js?id=G-LCNYTE04MR&cx=c&gtm=4e64h1171.3 KiB64.9 KiB
www.googletagmanager.com/gtag/js?id=G-4T2EB147B8&cx=c&gtm=4e64h1152.8 KiB64.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-PDQV3N121.5 KiB60.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-WXMV2VZ&gtm=4e64h1134.9 KiB52.0 KiB
www.stltoday.com/shared-content/art/tncms/api/access.bc44532080f114b4be74.js30.8 KiB25.2 KiB
tagan.adlightning.com/leeenterprises/b-2d8eee8-5fbd0057.js31.2 KiB22.9 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.

URLTotal CPU TimeScript EvaluationScript Parse
cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano.js2.1 s1.7 s61 ms
www.stltoday.com/1.9 s118 ms35 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js1.4 s1.2 s149 ms
Unattributable872 ms37 ms0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-TDWDC2694 ms548 ms139 ms
www.googletagmanager.com/gtm.js?id=GTM-WXMV2VZ&gtm=4e64h1656 ms579 ms71 ms
www.googletagmanager.com/gtag/js?id=G-4T2EB147B8&cx=c&gtm=4e64h1610 ms532 ms73 ms
a.pub.network/stltoday-com/prebid.js596 ms327 ms170 ms
www.googletagmanager.com/gtm.js?id=GTM-PDQV3N579 ms442 ms120 ms
a.pub.network/stltoday-com/pubfig.engine.mobile.js522 ms353 ms81 ms
/stltoday.com/shared-content/art/tncms/templates/librarie...453 ms292 ms19 ms
tagan.adlightning.com/leeenterprises/b-2d8eee8-5fbd0057.js434 ms355 ms29 ms
/stltoday.com/shared-content/art/tncms/templates/librarie...397 ms220 ms5.0 ms
www.googletagmanager.com/gtag/js?id=G-LCNYTE04MR&cx=c&gtm=4e64h1369 ms284 ms81 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js342 ms241 ms90 ms
/stltoday.com/shared-content/art/tncms/templates/librarie...281 ms90 ms114 ms
securepubads.g.doubleclick.net/tag/js/gpt.js219 ms192 ms25 ms
tagan.adlightning.com/leeenterprises/bl-0d6ee0c-f41ec2f8.js214 ms175 ms38 ms
www.googletagmanager.com/gtm.js?id=GTM-5MTD44X&gtm=4e64h1213 ms161 ms50 ms
cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano-ui.js209 ms115 ms30 ms
a.pub.network/stltoday-com/pubfig.min.js200 ms186 ms11 ms
/stltoday.com/content/tncms/live/libraries/flex/component...197 ms195 ms1.6 ms
tagan.adlightning.com/leeenterprises/op.js112 ms103 ms7.1 ms
/stltoday.com/content/tncms/live/libraries/flex/component...102 ms77 ms14 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.

CategoryTime Spent
Script Evaluation8.8 s
Other1.6 s
Script Parsing & Compilation1.5 s
Style & Layout1.1 s
Rendering417 ms
Parse HTML & CSS356 ms
Garbage Collection353 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 17.5 KiB
URLTransfer SizeEst Savings
/stltoday.com/content/tncms/live/libraries/flex/component...26.3 KiB17.5 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: 0.0 ms 69.6 KiB
URLTransfer SizeEst Savings
/stltoday.com/shared-content/art/tncms/templates/librarie...33.9 KiB32.6 KiB
/stltoday.com/shared-content/art/tncms/templates/librarie...21.0 KiB19.2 KiB
/stltoday.com/content/tncms/live/libraries/flex/component...21.4 KiB17.8 KiB

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.js362.3 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-TDWDC2203.3 KiB
a.pub.network/stltoday-com/prebid.js192.7 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB
www.googletagmanager.com/gtag/js?id=G-LCNYTE04MR&cx=c&gtm=4e64h1171.3 KiB
www.googletagmanager.com/gtag/js?id=G-4T2EB147B8&cx=c&gtm=4e64h1152.8 KiB
a.pub.network/stltoday-com/pubfig.engine.mobile.js151.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-WXMV2VZ&gtm=4e64h1134.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-PDQV3N121.9 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
STLtoday.com div.offcanvas-menu-inner > div.in-drawer-logo > a > img.img-responsive
/stltoday.com/content/tncms/custom/image/9b98b5bc-7564-11...
STLtoday.com a > div.front > figure > img.img-responsive
/stltoday.com/content/tncms/custom/image/9b98b5bc-7564-11...
Where your story lives div.wrap > a > div.back > img.img-responsive
/stltoday.com/content/tncms/live/libraries/flex/component...

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 14 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 2 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 90 ms
●Server Backend Latencies 100 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 90 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
93

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
Conversations with St. Louis leaders. Presented by Purina section#block-1478010 > div.clearfix > div.block-note > p

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
cookie preferences div.evvnt-widget-container > div#lee-consent-banner-events > div.panel-body > a

These are opportunities to improve the legibility of your content.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
PROVIDED div.media-preview-113d62ad-a2ba-51cb-8e81-f3ab6a35d3b3 > figure.photo > div.image > a.tnt-asset-link
PROVIDED div.media-preview-6eb405e2-dde4-5d08-9ea5-b63cd3f94e36 > figure.photo > div.image > a.tnt-asset-link
PROVIDED div.media-preview-bb00ab0d-41d9-5540-82f8-10b30263d734 > figure.photo > div.image > a.tnt-asset-link
CONTRIBUTOR div.media-preview-a8767724-1289-567a-9407-54bd0bc90040 > figure.photo > div.image > a.tnt-asset-link
○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
●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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●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
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○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
○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.
○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.
77

Best Practices

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
Topics
a.pub.network/stltoday-com/prebid.js line 92, col 1157

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
/_services/v1/client_captcha/challenge?request=eyJ0eXAiOi...
Failed to load resource: the server responded with a status of 401 ()
●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
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
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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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Logout div.logged-in > ul.list-inline > li > a.btn
Logout li.dropdown > ul.lee-membership-container > li > a.logout-btn
cookie preferences. div.modal-body > ul > li > a

To appear in search results, crawlers need access to your app.

○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
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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