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Lighthouse Desktop

· 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.

67

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
assets.adobedtm.com/launch-ENd3a547e91e4e490abd5e1cadb04c75bd.min.js3600.0 s175.4 KiB
www.stjude.org/lZwT9e/p/L/TTvMQWXuRQ/b3zic2VDJGpJVDQu/ZHFXenIRVwc/XV/kyUWwhemwB21600.0 s170.6 KiB
www.stjude.org/etc/clientlibs/stjude/www/homepage.min.js900.0 s80.7 KiB
www.stjude.org/assets/76be4ac4ccb6076bc1b614a19d2f05f4c0011e732c8600.0 s62.0 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js86400.0 s129.0 KiB
p11.techlab-cdn.com/e/65226_747628124.js600.0 s32.8 KiB
/etc/clientlibs/stjude/www/libs.hope/css/templates/home-p...900.0 s30.4 KiB
p11.techlab-cdn.com/e/65319_1825172515.js600.0 s18.3 KiB
www.stjude.org/etc.clientlibs/sjo/clientlibs/clientlib-site.min.css900.0 s10.9 KiB
/etc.clientlibs/sjo/components/navigation/clientlib/site/...900.0 s8.1 KiB
p11.techlab-cdn.com/e/65257_1825202430.js600.0 s7.0 KiB
www.stjude.org/akam/13/7a901ca21600.0 s9.5 KiB
s.go-mpulse.net/boomerang/Q4JE7-49MJV-CAJHF-BRTJA-QBWEK604800.0 s60.0 KiB
/etc.clientlibs/sjo/clientlibs/clientlib-site/resources/i...900.0 s6.2 KiB
/etc.clientlibs/sjo/components/navigation/clientlib/site/...900.0 s5.5 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
/etc.clientlibs/sjo/clientlibs/external-libraries/autocom...900.0 s3.6 KiB
cdn.cookielaw.org/consent/91c17f6b-307b-46d3-9e9f-be52e0a188a5/OtAutoBlock.js86400.0 s6.7 KiB
js.sentry-cdn.com/f37236b2397e55dc2e688e443f444194.min.js3600.0 s2.7 KiB
www.stjude.org/etc.clientlibs/sjo/clientlibs/clientlib-nav-analytics.min.js900.0 s2.4 KiB
p11.techlab-cdn.com/e/64885_1825202492.js600.0 s2.0 KiB
/etc.clientlibs/sjo/components/searchform/clientlib/site/...900.0 s1.8 KiB
/etc.clientlibs/sjo/components/searchform/clientlib/site/...900.0 s1.6 KiB
www.stjude.org/etc/clientlibs/stjude/shared/libraries/forms.min.js900.0 s1.6 KiB
/content/reference/en_US/external-links/microsites/togeth...900.0 s1.0 KiB
www.stjude.org/etc.clientlibs/sjo/components/svg/clientlib/site/svg.min.js900.0 s964 B
www.stjude.org/etc.clientlibs/sjo/components/svg/clientlib/site/svg.min.css900.0 s846 B
www.stjude.org/etc/clientlibs/stjude/shared/libraries/embedcolumn.min.js900.0 s719 B
www.stjude.org/etc/clientlibs/stjude/shared/libraries/image.min.js900.0 s587 B
/f904784c6d75/87fc2b3fa7dc/dd3c640d9198/RC672b2bb20b0a49b...3600.0 s643 B
/f904784c6d75/87fc2b3fa7dc/dd3c640d9198/RC7f34bc42ef78443...3600.0 s628 B
www.stjude.org/etc/clientlibs/stjude/www/resources/tracking-pixel.gif900.0 s504 B
/f904784c6d75/87fc2b3fa7dc/dd3c640d9198/RCf358ef9dd1854db...3600.0 s540 B
/f904784c6d75/87fc2b3fa7dc/dd3c640d9198/RC89394bf1736e421...3600.0 s501 B
/f904784c6d75/87fc2b3fa7dc/dd3c640d9198/RC10fa85b641ef494...3600.0 s494 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB

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:0.187781] map[node:map[boundingRect:map[bottom:4564 height:3798 left:0 right:1350 top:766 width:1350] lhId:page-1-SECTION nodeLabel:Research That Improves Care Explore how clinical studies guide better treatmen… path:5,HTML,2,BODY,1,MAIN,2,SECTION selector:body.www-site > main#site-content > section.entry-content snippet:<section class="entry-content"> type:node] score:0.185106] map[node:map[boundingRect:map[bottom:1319 height:471 left:246 right:654 top:848 width:409] lhId:page-3-FIGURE nodeLabel:Research That Improves Care Explore how clinical studies guide better treatmen… path:5,HTML,2,BODY,1,MAIN,2,SECTION,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,SECTION,0,A,0,FIGURE selector:div.par-1 > section.teaser-block > a.teaser-block-link > figure#target-3bf2db4cd8a56627c7743bc86c409c7276508553065a13a1078d9863563a4538 snippet:<figure id="target-3bf2db4cd8a56627c7743bc86c409c7276508553065a13a1078d9863563a4538" class="image-above mb-0"> type:node] score:0.002675]]

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:28.622 source:map[type:text value:[unattributed]]] map[reflowTime:17.077 source:map[column:2442 line:4319 type:source-location url:https://www.stjude.org/ urlProvider:network]]]

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

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.

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
two people in an office a.teaser-block-link > figure#target-3bf2db4cd8a56627c7743bc86c409c7276508553065a13a1078d9863563a4538 > picture.image-crop_8x5 > img.blur
/content/sites/www/en_US/home/jcr:content/par-1/cnt_row_1...61.3 KiB45.3 KiB
March a.teaser-block-link > figure.image-left > picture.image-crop_8x5 > img.blur
/content/sites/www/en_US/home/jcr:content/par-1/cnt_row_8...15.3 KiB8.8 KiB
St. Jude patient Jeritza smiles as she sits at a table painting. a.teaser-block-link > figure#target-264732a93bec1a0b80a4e99eb63770be3e09968e1ca9dd8e883b9b5b3782dbba > picture.image-crop_8x5 > img.blur
/content/sites/www/en_US/home/jcr:content/par-1/cnt_row_8...12.0 KiB5.8 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: 591 ms
URLTime Spent
stjude.org/591 ms
www.stjude.org/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
Research That Improves Care Explore how clinical studies guide better treatmen… body.www-site > main#site-content > section.entry-content
0.185
Research That Improves Care Explore how clinical studies guide better treatmen… div.par-1 > section.teaser-block > a.teaser-block-link > figure#target-3bf2db4cd8a56627c7743bc86c409c7276508553065a13a1078d9863563a4538
0.003

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 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: 40 ms 22.1 KiB
URLTransfer SizeEst Savings
/etc/clientlibs/stjude/www/libs.hope/css/templates/home-p...30.0 KiB22.1 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation1.3 s
Other639 ms
Style & Layout267 ms
Script Parsing & Compilation152 ms
Parse HTML & CSS42 ms
Rendering40 ms
Garbage Collection38 ms

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.

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

Optimize DOM size
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 2,473 KiB
User Timing marks and measures 1 user timing
JavaScript execution time 1.2 s
Avoid long main-thread tasks 9 long tasks found
Avoid non-composited animations 111 animated elements found
Image elements have explicit `width` and `height`
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 130 ms
Server Backend Latencies 230 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 370 ms
INP breakdown
90

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. 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
Privacy Policy form#emailCaptureForm-dea3670c64074f5824362e6e218e6a951f068f5116938059f1cc93e6b161b114 > div#captchaBanner > span#captchaText > a
Terms of Service form#emailCaptureForm-dea3670c64074f5824362e6e218e6a951f068f5116938059f1cc93e6b161b114 > div#captchaBanner > span#captchaText > a

These are opportunities to improve the legibility of your content.

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
Meet Eli “We are so thankful to St. Jude for Eli’s treatment. He was taken car… div#56356994c60739533798518e5ca707d2f3f7d0ca3fd7c8debfe068279ab9f880 > div.par-1 > section.carousel > ul#1ef53c11e62561c9f5a0d87e6049afd0b6eeb24183b2a751c332e079c118f276

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
Jeritza is now home after treatment "From the moment we arrived, her doctors a… ul#1ef53c11e62561c9f5a0d87e6049afd0b6eeb24183b2a751c332e079c118f276 > div.slick-list > div.slick-track > li.slick-slide

These are opportunities to improve the experience of reading tabular or list data using 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
Research That Improves Care Explore how clinical studies guide better treatmen… div#2078a858379b30f4d3f577d58b1fd9b54499a560c6cf8840b4da3e0300405401 > div.par-1 > section.teaser-block > a.teaser-block-link
Support our mission Learn why you should support St. Jude in our lifesaving mi… div#c06a275e4da040563d270ac7e373742a01d1960278b69301f31dfdfb526b548e > div.par-1 > section.teaser-block > a.teaser-block-link
Jeritza is now home after treatment "From the moment we arrived, her doctors a… div.slick-track > li.slick-slide > section.teaser-block > a.teaser-block-link
Research and Hospital Jobs Join talented clinicians, nurses, researchers, supp… div#b6f6cce5107e6dc57f2cb457c6b8bb1eff7e3ca721af2a4422ebfb9c8e7ce8f8 > div.par-1 > section.teaser-block > a.teaser-block-link
Fundraising Jobs at ALSAC To ensure families never receive a bill, we need dyn… div#94b0e657206b07d17568d4a08886b5bbeba44a88948dd9a60fd78d8d31304305 > div.par-1 > section.teaser-block > a.teaser-block-link
Explore Memphis Get to know the community, city life and distinctive culture t… div#3f6753b11865aab0cdb432c1d4aa8c42de0adca9a439a0634463e7d45e1f39b8 > div.par-1 > section.teaser-block > a.teaser-block-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
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
`[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
Touch targets have sufficient size and spacing.
Heading elements appear in a sequentially-descending order
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Uses ARIA roles only on compatible elements
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
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
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.
Image elements do not have `[alt]` attributes that are redundant text.
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.
100

Best Practices

General

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.

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
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
85

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
global.stjude.org/en-us/?sc_icid=home-spot-global-bttnLearn More

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

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
Your Opt-Out Rights section.footer-bottom > ul.footer-links > 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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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