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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.

23

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.

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:0.656139] map[node:map[boundingRect:map[bottom:482 height:105 left:34 right:378 top:377 width:343] lhId:page-7-A nodeLabel:Window washer falls three stories from downtown Des Moines building Des Moines path:1,HTML,1,BODY,5,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,3,A selector:div.content-well > div#content > div#section-stories > a.section-helper-flex snippet:<a class="section-helper-flex section-helper-row ten-column spacer-small p1-container" href="/story/news/local/des-moines/2026/04/22/window-washer-falls-downtown-des-m…" data-module-name="promo-story-thumb-small" data-index="2" onclick="firePromoAnalytics(event)"> type:node] score:0.336323 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:288 height:232 left:0 right:412 top:56 width:412] lhId:page-5-IMG nodeLabel:a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo path:1,HTML,1,BODY,5,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,DIV,0,PICTURE,3,IMG selector:a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo snippet:<img src="https://www.gannett-cdn.com/authoring/authoring-images/2025/11/13/PDEM/872…" alt="" class="p2-photo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:482 height:105 left:34 right:378 top:377 width:343] lhId:page-7-A nodeLabel:Window washer falls three stories from downtown Des Moines building Des Moines path:1,HTML,1,BODY,5,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,3,A selector:div.content-well > div#content > div#section-stories > a.section-helper-flex snippet:<a class="section-helper-flex section-helper-row ten-column spacer-small p1-container" href="/story/news/local/des-moines/2026/04/22/window-washer-falls-downtown-des-m…" data-module-name="promo-story-thumb-small" data-index="2" onclick="firePromoAnalytics(event)"> type:node] score:0.318659] map[node:map[boundingRect:map[bottom:55 height:55 left:167 right:412 top:0 width:245] lhId:page-6-DIV nodeLabel:div#navWrapContainer > div#navContainer > div#navRibbon > div#itemWrapper path:1,HTML,1,BODY,2,UTIL-STICKY-MODULE,2,DIV,1,DIV,0,DIV,1,DIV selector:div#navWrapContainer > div#navContainer > div#navRibbon > div#itemWrapper snippet:<div id="itemWrapper"> type:node] score:0.001157 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:288 height:232 left:0 right:412 top:56 width:412] lhId:page-5-IMG nodeLabel:a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo path:1,HTML,1,BODY,5,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,DIV,0,PICTURE,3,IMG selector:a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo snippet:<img src="https://www.gannett-cdn.com/authoring/authoring-images/2025/11/13/PDEM/872…" alt="" class="p2-photo"> 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.

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
a.container-link > div.container > img a.container-link > div.container > img
/authoring/authoring-images/2025/11/29/PDEM/87526917007-u...1.5 MiB1.5 MiB
Window washer falls three stories from downtown Des Moines building div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89736913007-s...143.9 KiB138.5 KiB
Make College Great Again? Why UI's new center is causing a stir div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89734206007-c...88.9 KiB83.5 KiB
Police searching for missing Ankeny teen div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89733819007-6...77.9 KiB72.5 KiB
a.container-link > div.container > img a.container-link > div.container > img
/authoring/authoring-images/2026/04/21/PDEM/89718974007-l...18.1 KiB7.6 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-5-IMG
nodeLabel: a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo
path: 1,HTML,1,BODY,5,SECTION,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,DIV,0,PICTURE,3,IMG
selector: a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo
snippet: <img src="https://www.gannett-cdn.com/authoring/authoring-images/2025/11/13/PDEM/872…" alt="" class="p2-photo">

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
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.

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: 1.5 s

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
Window washer falls three stories from downtown Des Moines building Des Moines div.content-well > div#content > div#section-stories > a.section-helper-flex
0.336
Window washer falls three stories from downtown Des Moines building Des Moines div.content-well > div#content > div#section-stories > a.section-helper-flex
0.319
div#navWrapContainer > div#navContainer > div#navRibbon > div#itemWrapper div#navWrapContainer > div#navContainer > div#navRibbon > div#itemWrapper
0.001

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 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: 150 ms 283.8 KiB
URLTransfer SizeEst Savings
98.6 KiB65.1 KiB
36.2 KiB23.9 KiB
29.9 KiB20.6 KiB
24.0 KiB14.0 KiB
25.1 KiB13.8 KiB
26.2 KiB12.5 KiB
20.0 KiB12.3 KiB
19.5 KiB11.9 KiB
18.6 KiB10.3 KiB
/universal-web-client/master/latest/core/scripts/partner.js17.2 KiB7.4 KiB
13.2 KiB7.2 KiB
12.6 KiB7.1 KiB
10.0 KiB6.8 KiB
6.6 KiB6.1 KiB
10.9 KiB6.0 KiB
7.0 KiB5.6 KiB
9.0 KiB5.3 KiB
9.5 KiB5.0 KiB
5.5 KiB4.8 KiB
9.4 KiB4.7 KiB
9.9 KiB4.5 KiB
7.8 KiB4.3 KiB
5.5 KiB4.1 KiB
5.0 KiB3.1 KiB
6.1 KiB3.1 KiB
4.9 KiB2.7 KiB
3.6 KiB2.6 KiB
/universal-web-client/master/latest/core/scripts/utils.js5.2 KiB2.5 KiB
3.9 KiB2.3 KiB
6.6 KiB2.2 KiB
3.0 KiB2.0 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: 150 ms 144.1 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.

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 Evaluation2.4 s
Other1.4 s
Style & Layout719 ms
Script Parsing & Compilation348 ms
Rendering233 ms
Parse HTML & CSS161 ms
Garbage Collection101 ms

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
a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo
/authoring/authoring-images/2025/11/13/PDEM/87257756007-n...
The Des Moines Register div#navRibbon > div#toggleSticky > a#logoContainer > img#logo
/gannett-web/properties/desmoinesregister/logos-and-brand...
The Des Moines Register div.expand-wrap-top > div#logoWrap > a#hubLogo > img#sidebarLogo
/gannett-web/properties/desmoinesregister/logos-and-brand...
Window washer falls three stories from downtown Des Moines building div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89736913007-s...
Police searching for missing Ankeny teen div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89733819007-6...
Police release little info in aftermath of Iowa City shooting. Why? div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/19/PIOC/89690040007-2...
Iowa landlords say Senate property tax plan could drive up rent costs div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/21/PDEM/89719075007-p...
Solar panels will soon help power Polk County Jail div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/presto/2020/09/23/PDEM/6aeb5a9d-fd7d-4216-8c3d-cb451bdf8...
How a comic book can teach you about cocktails div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/21/PDEM/89718900007-i...
A Driftless road‑trip payoff: Iowa supper club earns top praise div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/21/PDEM/89718940007-r...
Watch:: Window washer rescued from scaffolding on downtown building div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89738437007-s...
How Des Moines Public Schools' budget will affect your property taxes div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/03/24/PDEM/89309061007-d...
Mile posts: Items on Annie Frisbie, Shelby Houlihan, Mallory Lindaman, Riley Wi… div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2025/11/05/PDEM/87097506007-a...
Hear Sen. Jack Whitver's emotional retirement speech div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2025/05/09/PDEM/83543533007-e...
Motorcyclist dead after West Des Moines crash with school bus div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/-mm-/dac7d256a59f84940e502b66fdba9c9126e1eda5/c=300-0-11...
Suspect in Des Moines homicide arrested in Chicago div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/-mm-/a101bc7dcedf5dbcb73e5fd751878757ec594838/c=150-0-56...
ISU assistant coach Jodi Steyer announces retirement div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/02/26/NATR/88886339007-0...
Iowa gymnastics coach to plead guilty in Mississippi child porn case div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2025/08/19/PDEM/85724991007-0...
Soy supports a sustainable future, from farm to fork div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2025/09/26/PDEM/86367831007-h...
Make College Great Again? Why UI's new center is causing a stir div.section-helper-flex > div.nonflexDiv > picture.p1-image > img.p1-image
/authoring/authoring-images/2026/04/22/PDEM/89734206007-c...

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

Optimize DOM size
Font display
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Reduce unused CSS
Avoid long main-thread tasks 17 long tasks found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 10 ms
Server Backend Latencies 380 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 400 ms
INP breakdown
User Timing marks and measures
Avoid non-composited animations
85

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
Share your feedback div.content-well > div#post-content > cta-generic-text.feedback > span.emphasis

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
Most Recent Videos div#container > a.has-padding > h5.label-news

These are opportunities to improve keyboard navigation in your application.

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
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#footer > div#footerContainer > div#footerButtons > a#Facebook div#footer > div#footerContainer > div#footerButtons > a#Facebook
div#footer > div#footerContainer > div#footerButtons > a#Twitter div#footer > div#footerContainer > div#footerButtons > a#Twitter
div#footer > div#footerContainer > div#footerButtons > a#Pinterest div#footer > div#footerContainer > div#footerButtons > a#Pinterest

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Skip to main content body.partner-placements-inactive > a#skipToMain

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.

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
For more information about how we use your data visit our Privacy Policy. div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-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
Form elements have associated labels
`[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.
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 are distinguishable without relying on color.
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.
Document has a main landmark.
Deprecated ARIA roles were not used
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
`[aria-hidden="true"]` elements do not contain focusable descendents
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
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
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.
92

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo a.section-helper-flex > div.section-helper-column > picture.p2-photo > img.p2-photo
/authoring/authoring-images/2025/11/13/PDEM/87257756007-n...412 x 232420 x 236618 x 348

General

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
Access to fetch at 'https://user.desmoinesregister.com/PDEM-GUP/user/' from origin 'https://eu.desmoinesregister.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Error with Permissions-Policy header: Parse of permissions policy failed because of errors reported by structured header parser.
Failed to load resource: net::ERR_FAILED
Uses HTTPS
Avoids deprecated APIs
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
Page has the HTML doctype
Properly defines charset
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
54

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 are unable to include your pages in search results if they don't have permission to crawl them. Learn more about crawler directives.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Blocking Directive Source
x-robots-tag: noindex, nofollow,noarchive,nocache

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

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img
a.container-link > div.container > img a.container-link > div.container > img

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

Structured data is valid
Document has a `<title>` element
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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