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

Audit breakdown by category with detailed findings.

60

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
/pb-assets/journals/platform/home-page/chemistry-hub-1750...86400.0 s223.7 KiB
www.cell.com/pb-assets/journals/platform/home-page/tuesday1-1776435420360.jpg86400.0 s152.9 KiB
www.cell.com/pb-assets/journals/platform/home-page/em-featured-1725386224950.jpg86400.0 s137.9 KiB
cdn.cookielaw.org/scripttemplates/202505.2.0/otBannerSdk.js86400.0 s119.2 KiB
/pb-assets/journals/platform/home-page/em-submission-revi...86400.0 s82.1 KiB
/products/marlin/cell/releasedAssets/fonts/NexusSansWebPr...86400.0 s74.2 KiB
/products/marlin/cell/releasedAssets/fonts/NexusSansWebPr...86400.0 s70.4 KiB
/products/marlin/cell/releasedAssets/fonts/NexusSansOffcP...86400.0 s57.7 KiB
/products/marlin/cell/releasedAssets/fonts/NexusSansOffcP...86400.0 s56.1 KiB
/products/marlin/cell/releasedAssets/js/main.bundle-94af9...604800.0 s218.3 KiB
/pb-assets/journals/platform/home-page/fundamentalbio-hub...86400.0 s48.7 KiB
www.cell.com/pb-assets/journals/platform/home-page/em-bestof-1750100009733.jpg86400.0 s45.3 KiB
/products/marlin/cell/releasedAssets/fonts/icomoon/fonts/...86400.0 s41.9 KiB
www.cell.com/pb-assets/journals/platform/home-page/home-mjs-1773169489083.jpg86400.0 s32.5 KiB
/products/marlin/cell/releasedAssets/fonts/icomoon-d4d19e...86400.0 s31.9 KiB
/pb-assets/journals/platform/home-page/em-cell-press-news...86400.0 s31.1 KiB
/pb-assets/journals/platform/home-page/biotech-bioeng-175...86400.0 s31.0 KiB
/products/marlin/cell/releasedAssets/css/build-2b38a6d809...604800.0 s103.3 KiB
www.cell.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s12.0 KiB
cdn.cookielaw.org/logos/static/ot_company_logo.png86400.0 s19.1 KiB
/products/marlin/cell/releasedAssets/js/selected.bundle-6...604800.0 s53.9 KiB
/products/marlin/cell/releasedAssets/css/selected-2b38a6d...604800.0 s50.6 KiB
/templates/jsp/_style2/_marlin/pb2/fonts/elsevierwordmark...0.0 ms4.8 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917...86400.0 s6.9 KiB
/products/marlin/cell/releasedAssets/fonts/elsevierwordma...86400.0 s4.9 KiB
/products/marlin/cell/releasedAssets/fonts/elsevierwordma...86400.0 s4.6 KiB
www.cell.com/templates/jsp/_style2/_marlin/images/magnifying-glass.png0.0 ms1.5 KiB
www.cell.com/pb-assets/ux3/logos/cell/CellPress_rebrand-1578336322460.svg86400.0 s2.7 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
www.cell.com/pb-assets/ux3/logos/cell/cellpress_rebrand_logo-1744813564367.svg86400.0 s2.5 KiB
www.cell.com/pb/assets/raw/Health%20Advance/images/relx-1554393210983.png86400.0 s2.0 KiB
/1/16e2192192?a=916957862&sa=1&v=1177.96a4d39&t=Unnamed%2...0.0 ms617 B
www.cell.com/templates/jsp/_style2/_marlin/images/bg_adHoriz.gif0.0 ms608 B
www.cell.com/templates/jsp/_style2/_marlin/images/bg_adVert.gif0.0 ms595 B
www.cell.com/templates/jsp/_style2/_marlin/images/next.png0.0 ms514 B
www.cell.com/templates/jsp/_style2/_marlin/images/prev.png0.0 ms512 B
/templates/jsp/css/jquery-ui-1.10.2/base/images/ui-bg_fla...0.0 ms405 B
www.cell.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js172800.0 s850 B
/products/marlin/cell/releasedAssets/css/print-2b38a6d809...604800.0 s735 B

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:0.386066] map[node:map[boundingRect:map[bottom:790 height:324 left:0 right:1350 top:466 width:1350] lhId:page-5-DIV nodeLabel:Most recent Current Cell Journal Home Table of Contents Online Now Archive Subm… path:1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,4,DIV selector:div.wrapped > div.widget-body > div > div#19bf926d-faa5-404c-a8d0-8200e5e5eb4f snippet:<div class="widget layout-frame none widget-none widget-compact-all" id="19bf926d-faa5-404c-a8d0-8200e5e5eb4f" style="padding: 0px; background-color: rgb(245, 245, 245);"> type:node] score:0.198789] map[node:map[boundingRect:map[bottom:2970 height:2823 left:0 right:1350 top:147 width:1350] lhId:page-10-DIV nodeLabel:CELL REPORTS PHYSICAL SCIENCE Advanced materials design for sustainable clean w… path:1,HTML,1,BODY,1,DIV,0,DIV,2,DIV selector:body.pb-ui > div#pb-page-content > div > div#19f7c356-41c6-47b9-bccc-09d617338886 snippet:<div class="widget page-main-content none legacy-pb-page-content widget-none widget-c…" id="19f7c356-41c6-47b9-bccc-09d617338886"> type:node] score:0.187277 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:706 height:150 left:91 right:206 top:556 width:115] lhId:page-4-IMG nodeLabel:Cover image volume 189, Issue 8 path:1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,4,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,2,FORM,0,UL,1,LI,0,A,0,IMG selector:ul.articleCitations > li.articleCitation > a#currcoverLink > img snippet:<img src="/cms/asset/c6a7b689-b779-4ba4-9539-93ccfdebb355/cov150h.gif" alt="Cover image volume 189, Issue 8"> 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.

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
/products/marlin/cell/releasedAssets/fonts/icomoon-d4d19e...35 ms
/templates/jsp/_style2/_marlin/pb2/fonts/elsevierwordmark...20 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
/pb-assets/journals/platform/home-page/chemistry-hub-1750...223.0 KiB175.5 KiB
www.cell.com/pb-assets/journals/platform/home-page/em-featured-1725386224950.jpg137.3 KiB89.8 KiB
CELL REPORTS PHYSICAL SCIENCE Advanced materials design for sustainable clean w… div.widget-body > div > div > div#heroWrapper
www.cell.com/pb-assets/journals/platform/home-page/tuesday1-1776435420360.jpg152.2 KiB72.1 KiB
Cell Press events hub div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/em-submission-revi...81.4 KiB34.0 KiB
div > div.detail > div.abstractImage > img div > div.detail > div.abstractImage > img
www.cell.com/cms/asset/add17ada-541a-49fe-8298-610b589755ba/fx1.sml13.4 KiB11.4 KiB
div > div.detail > div.abstractImage > img div > div.detail > div.abstractImage > img
www.cell.com/cms/asset/28755260-75aa-4982-b7d6-8dbc1e4dc2a7/fx1.sml12.3 KiB10.3 KiB
Cover image volume 189, Issue 8 ul.articleCitations > li.articleCitation > a#currcoverLink > img
www.cell.com/cms/asset/c6a7b689-b779-4ba4-9539-93ccfdebb355/cov150h.gif12.5 KiB9.7 KiB
www.cell.com/cms/asset/79c69768-16ff-4b61-b991-8b3cf16e1c1f/gr1.sml5.8 KiB5.5 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-0-DIV
nodeLabel: CELL REPORTS PHYSICAL SCIENCE Advanced materials design for sustainable clean w…
path: 1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV
selector: div.widget-body > div > div > div#heroWrapper
snippet: <div id="heroWrapper" align="right" style="background-image: url(&quot;/pb-assets/journals/platform/home-page/tuesday1-177…&quot;);">

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.

URLTransfer SizeDuration
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.js161.1 KiB473 ms
/pb/css/t1776774165807-v1776660140000/head_1_3654_3656_38...32.7 KiB151 ms
www.cell.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js850 B151 ms
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.css13.4 KiB70 ms
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~cell.css4.6 KiB70 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js9.1 KiB222 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 832 ms
URLTime Spent
cell.com/306 ms
/as/authorization.oauth2?platSite=LT%2Fcell&response_type...361 ms
/callback?red_uri=%2F&code=snFgesVcD7n7cB3kL93K6sU3IZ8q_B...165 ms
www.cell.com/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Most recent Current Cell Journal Home Table of Contents Online Now Archive Subm… div.wrapped > div.widget-body > div > div#19bf926d-faa5-404c-a8d0-8200e5e5eb4f
0.199
CELL REPORTS PHYSICAL SCIENCE Advanced materials design for sustainable clean w… body.pb-ui > div#pb-page-content > div > div#19f7c356-41c6-47b9-bccc-09d617338886
0.187

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 70 ms 114.0 KiB
URLTransfer SizeEst Savings
/products/marlin/cell/releasedAssets/css/selected-2b38a6d...50.3 KiB48.5 KiB
/pb/css/t1776774165807-v1776660140000/head_1_3654_3656_38...32.4 KiB31.5 KiB
25.3 KiB21.1 KiB
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.css13.1 KiB12.9 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: 240 ms 220.2 KiB
URLTransfer SizeEst Savings
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.js160.8 KiB121.1 KiB
cdn.cookielaw.org/scripttemplates/202505.2.0/otBannerSdk.js119.0 KiB62.0 KiB
/products/marlin/cell/releasedAssets/js/selected.bundle-6...53.6 KiB37.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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 3.7 KiB
URLTransfer SizeEst Savings
inline: function gpt_CheckEnvironment() { i…9.1 KiB3.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Cell Press logo over water div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/em-cell-press-news...
Cell Press Multi-Journal Submission div.pb-autoheight > span > a > img
www.cell.com/pb-assets/journals/platform/home-page/home-mjs-1773169489083.jpg
Clinical and translational research hub div.pb-autoheight > span > a > img
www.cell.com/pb-assets/journals/platform/home-page/em-bestof-1750100009733.jpg
Cell Press events hub div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/em-submission-revi...
Biotechnology and bioengineering hub div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/biotech-bioeng-175...
Chemistry hub div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/chemistry-hub-1750...
Fundamental biology hub div.pb-autoheight > span > a > img
/pb-assets/journals/platform/home-page/fundamentalbio-hub...
A dandelion seeding in the wind div.pb-autoheight > span > a > img
www.cell.com/pb-assets/journals/platform/home-page/em-featured-1725386224950.jpg
div > div.detail > div.abstractImage > img div > div.detail > div.abstractImage > img
www.cell.com/cms/asset/add17ada-541a-49fe-8298-610b589755ba/fx1.sml
div > div.detail > div.abstractImage > img div > div.detail > div.abstractImage > img
www.cell.com/cms/asset/add17ada-541a-49fe-8298-610b589755ba/fx1.sml
div > div.detail > div.abstractImage > img div > div.detail > div.abstractImage > img
www.cell.com/cms/asset/28755260-75aa-4982-b7d6-8dbc1e4dc2a7/fx1.sml
Cover image volume 189, Issue 8 ul.articleCitations > li.articleCitation > a#currcoverLink > img
www.cell.com/cms/asset/c6a7b689-b779-4ba4-9539-93ccfdebb355/cov150h.gif
Cell Press div.journal-logos > span > a > img
www.cell.com/pb-assets/ux3/logos/cell/CellPress_rebrand-1578336322460.svg
RELX div > p > a > img
www.cell.com/pb/assets/raw/Health%20Advance/images/relx-1554393210983.png
Advertisement div.horizontalAdContainer > div.horizontalAdLabelContainer > div.horizontalAdLabel > img
www.cell.com/templates/jsp/_style2/_marlin/images/bg_adHoriz.gif
Advertisement div.verticalAdContainer > div.verticalAdLabelContainer > div.verticalAdLabel > img
www.cell.com/templates/jsp/_style2/_marlin/images/bg_adVert.gif
Advertisement div.horizontalAdContainer > div.horizontalAdLabelContainer > div.horizontalAdLabel > img
www.cell.com/templates/jsp/_style2/_marlin/images/bg_adHoriz.gif

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

●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 60 ms
●Minify CSS
●Avoids enormous network payloads Total size was 2,125 KiB
●JavaScript execution time 0.4 s
●Minimizes main-thread work 0.8 s
●Avoid long main-thread tasks 1 long task found
●Network Requests
●Network Round Trip Times 10 ms
●Server Backend Latencies 160 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 120 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
88

Accessibility

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

ARIA

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Journals Publish News & events About Cell Press div.widget-body > nav#mega-menu-nav > div.mega-menu-nav__wrapper > ul#mega-menu-box

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

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

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
Cell Press Multi-Journal Submission div > div.cell_home_card > div.card_title > a

These items highlight common accessibility best practices.

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
Cookie settings span.align-center > div > p > button#cookieBtn
○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
●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
●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 are distinguishable without relying on color.
●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
●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
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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.
73

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
SharedStorage
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.js line 1, col 2799
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.cell.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.cell.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Unload event listeners are deprecated and will be removed.
www.cell.com/ line 12, col 26069

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
www.cell.com/ line 2958, col 61
TypeError: Cannot read properties of null (reading 'getElementsByTagName') at https://www.cell.com/:2959:62

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.cell.com/wro/f03726d8be65c99af4dc13935c7996e819a5ff0d~product.js
/products/marlin/cell/releasedAssets/js/selected.bundle-6.../products/marlin/cell/releasedAssets/js/selected.bundle-6...
●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
●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
www.cell.com/aboutLearn more
www.cell.com/multi-journal-submissionLearn more
www.cell.com/news-doLearn 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
Close search options form > div.quick-search__box > div.quick-search__box-inner > a.quick-search__box-close

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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