Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

URL	Est Savings
/wp-content/plugins/megamenu-pro/icons/fontawesome6/webfo...	165 ms
/wp-content/plugins/megamenu-pro/icons/fontawesome6/webfo...	145 ms
/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DP...	15 ms
fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2	10 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2	5.0 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:110.697 source:map[type:text value:[unattributed]]]]

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-VIDEO

nodeLabel: div.fl-row > div.fl-row-content-wrap > div.fl-bg-video > video

path: 1,HTML,1,BODY,4,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,VIDEO

selector: div.fl-row > div.fl-row-content-wrap > div.fl-bg-video > video

snippet: <video autoplay="" loop="" muted="" playsinline="" poster="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIB…" style="background-image: url("/wp-content/uploads/2024/02/ReadCube_contour_1-1-sc…");">

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.

URL	Transfer Size	Duration
unpkg.com/gsap@3.15.0/dist/gsap.min.js	28.1 KiB	230 ms
www.readcube.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	33.1 KiB	204 ms
unpkg.com/gsap@3.15.0/dist/ScrollTrigger.min.js	18.0 KiB	237 ms
www.readcube.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1	5.9 KiB	156 ms
www.readcube.com/wp-content/themes/bb-theme/css/base-4.min.css?ver=1.7.19.2	9.7 KiB	156 ms
/wp-content/plugins/megamenu-pro/icons/fontawesome6/css/a...	24.8 KiB	253 ms
www.readcube.com/wp-includes/css/dist/block-library/style.min.css?ver=6.9.4	18.0 KiB	253 ms
/wp-content/uploads/bb-plugin/cache/df30b328031811f0ca9db...	7.1 KiB	156 ms
/wp-content/plugins/bbpowerpack/assets/css/animate.min.cs...	5.4 KiB	107 ms
/wp-content/plugins/bb-plugin/fonts/fontawesome/5.15.4/cs...	14.3 KiB	204 ms
www.readcube.com/wp-content/uploads/bb-theme/skin-69de222893d53.css?ver=1.7.19.2	12.0 KiB	156 ms
/wp-content/plugins/event-tickets/build/css/tickets.css?v...	5.3 KiB	204 ms
/wp-content/uploads/bb-plugin/cache/31706-layout-partial....	1.6 KiB	107 ms
/wp-content/uploads/bb-plugin/cache/31703-layout-partial....	1.6 KiB	107 ms
/wp-content/uploads/bb-plugin/cache/31700-layout-partial....	1.6 KiB	107 ms
cdn.cookielaw.org/consent/7f541145-525f-4003-b6e1-131edbe83f4a/OtAutoBlock.js	2.9 KiB	221 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js	9.1 KiB	129 ms
/wp-content/plugins/event-tickets/build/css/rsvp-v1.css?v...	4.4 KiB	107 ms
/wp-content/plugins/bb-plugin/css/jquery.magnificpopup.mi...	2.4 KiB	107 ms
www.readcube.com/wp-content/uploads/maxmegamenu/style.css?ver=f255c6	10.8 KiB	156 ms
/wp-content/plugins/the-events-calendar/common/build/css/...	5.6 KiB	204 ms
/wp-content/uploads/bb-plugin/cache/12-layout.css?ver=47d...	14.1 KiB	204 ms
www.readcube.com/wp-content/themes/bb-theme-child/style.css?ver=6.9.4	957 B	107 ms
www.readcube.com/wp-includes/css/dashicons.min.css?ver=6.9.4	35.4 KiB	351 ms
/css?family=Poppins%3A300%2C400%2C700%2C400%7CRoboto%3A70...	2.2 KiB	202 ms
/wp-content/plugins/megamenu-pro/icons/genericons/generic...	16.8 KiB	204 ms
/wp-content/plugins/translatepress-multilingual/assets/cs...	1.6 KiB	107 ms
www.readcube.com/wp-content/plugins/event-tickets/build/css/rsvp.css?ver=5.27.4	4.7 KiB	107 ms
/wp-content/plugins/bbpowerpack/assets/css/owl.theme.css?...	1.2 KiB	107 ms
/wp-content/plugins/the-events-calendar/common/build/css/...	1.7 KiB	204 ms
/wp-content/plugins/bbpowerpack/assets/css/owl.carousel.c...	2.1 KiB	107 ms
/wp-content/plugins/the-events-calendar/common/build/css/...	3.4 KiB	204 ms
/wp-content/plugins/the-events-calendar/common/build/css/...	1.3 KiB	204 ms

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js	86400.0 s	128.4 KiB
assets.adobedtm.com/175f7caa2b90/0f5b2432d76d/launch-86c4cb42ca19.min.js	3600.0 s	22.6 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	11.4 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
/logos/6a189e47-62e6-47b4-81b0-3ccd4f0bf2ab/7f541145-525f...	86400.0 s	7.9 KiB
cdn.cookielaw.org/consent/7f541145-525f-4003-b6e1-131edbe83f4a/OtAutoBlock.js	86400.0 s	2.9 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.6 KiB

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
medical `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/medical-affairs.jpg	542.7 KiB	538.2 KiB
r-d `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/research-dev.jpg	534.7 KiB	529.5 KiB
div.fl-module > ul.use-case > li > img `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/non-profit.jpg	452.9 KiB	448.4 KiB
div.fl-module > ul.use-case > li > img `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/government-environmental.jpg	427.8 KiB	423.3 KiB
div.fl-module > ul.use-case > li > img `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/regulatory.jpg	417.8 KiB	413.3 KiB
corp_lib `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2024/09/corporate-libraries.jpg	378.2 KiB	373.7 KiB
pharma `div.fl-module > ul.use-case > li > img`	/wp-content/uploads/2023/09/ReadCube_Industry_Pharmacovig...	176.3 KiB	171.0 KiB
div.fl-module > ul.use-case > li > img `div.fl-module > ul.use-case > li > img`	www.readcube.com/wp-content/uploads/2023/09/ReadCube_Features_Hero.jpg	138.2 KiB	133.9 KiB
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`	www.readcube.com/wp-content/uploads/2023/06/roche_logo.png	19.4 KiB	19.3 KiB
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`	www.readcube.com/wp-content/uploads/2023/06/roivant.png	5.8 KiB	5.6 KiB
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`	www.readcube.com/wp-content/uploads/2023/06/Medscape_Logo.png	5.6 KiB	5.4 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: 484 ms

URL	Time Spent
rdcu.be/	484 ms
www.readcube.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

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: 130 ms 134.7 KiB

URL	Transfer Size	Est Savings
www.readcube.com/wp-includes/css/dashicons.min.css?ver=6.9.4	34.7 KiB	34.7 KiB
/wp-content/plugins/megamenu-pro/icons/fontawesome6/css/a...	24.0 KiB	23.8 KiB
	21.4 KiB	18.9 KiB
www.readcube.com/wp-includes/css/dist/block-library/style.min.css?ver=6.9.4	17.2 KiB	17.1 KiB
/wp-content/plugins/megamenu-pro/icons/genericons/generic...	16.1 KiB	16.1 KiB
/wp-content/plugins/bb-plugin/fonts/fontawesome/5.15.4/cs...	13.5 KiB	13.4 KiB
www.readcube.com/wp-content/uploads/bb-theme/skin-69de222893d53.css?ver=1.7.19.2	11.2 KiB	10.8 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.

Category	Time Spent
Script Evaluation	813 ms
Other	605 ms
Style & Layout	339 ms
Script Parsing & Compilation	129 ms
Parse HTML & CSS	74 ms
Rendering	73 ms
Garbage Collection	21 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 2.8 KiB

URL	Transfer Size	Est Savings
www.readcube.com/wp-content/plugins/megamenu/js/maxmegamenu.js?ver=3.8.1	7.5 KiB	2.8 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: 0.0 ms 197.6 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-FMT5SQJ46L&cx=c&gtm=4e64k1h2	173.1 KiB	69.0 KiB
www.googletagmanager.com/gtag/js?id=AW-1009772145&cx=c&gtm=4e64k1h2	145.6 KiB	64.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-MCT77F4P	153.8 KiB	63.8 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.

URL	Transfer Size
www.readcube.com/wp-content/uploads/2024/09/Gradients-Loop_1920x1080_10sec.mp4	6.6 MiB
www.readcube.com/wp-content/uploads/2024/09/medical-affairs.jpg	543.6 KiB
www.readcube.com/wp-content/uploads/2024/09/research-dev.jpg	535.6 KiB
www.readcube.com/wp-content/uploads/2024/09/non-profit.jpg	453.8 KiB
www.readcube.com/wp-content/uploads/2024/09/government-environmental.jpg	428.7 KiB
www.readcube.com/wp-content/uploads/2024/09/regulatory.jpg	418.4 KiB
www.readcube.com/wp-content/uploads/2024/09/corporate-libraries.jpg	379.0 KiB
www.readcube.com/wp-content/uploads/2024/09/Search-New-1.png	308.3 KiB
/wp-content/uploads/2023/09/ReadCube_Industry_Pharmacovig...	177.0 KiB
www.googletagmanager.com/gtag/js?id=G-FMT5SQJ46L&cx=c&gtm=4e64k1h2	173.2 KiB

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

●Max Potential First Input Delay 130 ms

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 9 user timings

●JavaScript execution time 0.9 s

●Avoid long main-thread tasks 4 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 90 ms

●Server Backend Latencies 120 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 290 ms

●Avoid large layout shifts 2 layout shifts found

○INP breakdown

○Avoid non-composited animations

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 child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
R&D Teams `nav > ul#menu-use-cases > li#menu-item-32615 > a`
Medical Affairs `nav > ul#menu-use-cases > li#menu-item-32614 > a`
Pharmacovigilance `nav > ul#menu-use-cases > li#menu-item-32613 > a`
Corporate Libraries & Knowledge Centers `nav > ul#menu-use-cases > li#menu-item-32612 > a`
Non-Profit Organizations `nav > ul#menu-use-cases > li#menu-item-31849 > a`
Health and Environmental Agencies `nav > ul#menu-use-cases > li#menu-item-31850 > a`
Regulatory Agencies `nav > ul#menu-use-cases > li#menu-item-31851 > a`
Government Organizations `nav > ul#menu-use-cases > li#menu-item-31852 > a`
Literature Management `nav > ul#menu-features > li#menu-item-31504 > a`
Literature Monitoring `nav > ul#menu-features > li#menu-item-31855 > a`
AI Assistant `nav > ul#menu-features > li#menu-item-31854 > a`
Literature Review `nav > ul#menu-features > li#menu-item-31503 > a`
Document Delivery `nav > ul#menu-features > li#menu-item-32552 > a`
SmartCite `nav > ul#menu-features > li#menu-item-32559 > a`
News `nav > ul#menu-resources > li#menu-item-31512 > a`
Case Studies `nav > ul#menu-resources > li#menu-item-32481 > a`
White Papers `nav > ul#menu-resources > li#menu-item-32483 > a`
Training Center `nav > ul#menu-support > li#menu-item-32475 > a`
Download Center `nav > ul#menu-support > li#menu-item-32476 > a`
Release Notes `nav > ul#menu-support > li#menu-item-32477 > a`
Help Center `nav > ul#menu-support > li#menu-item-32501 > a`
Submit a Ticket `nav > ul#menu-support > li#menu-item-32479 > a`
Supported Styles `nav > ul#menu-support > li#menu-item-32480 > a`
Terms `nav > ul#menu-privacty-terms > li#menu-item-31242 > a`
Privacy `nav > ul#menu-privacty-terms > li#menu-item-31243 > a`
Security Statement `nav > ul#menu-privacty-terms > li#menu-item-31244 > a`
Data Protection `nav > ul#menu-privacty-terms > li#menu-item-31245 > a`
Cookie Policy `nav > ul#menu-privacty-terms > li#menu-item-31246 > a`

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.

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
Use Cases `div.fl-col-group > div.fl-col > div.fl-col-content > h5.fl-module`

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
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`

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.fl-module-content > div.pp-social-icons > span.pp-social-icon > a `div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a`
div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a `div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a`
div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a `div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a`
div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a `div.fl-module-content > div.pp-social-icons > span.pp-social-icon > a`

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.

○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

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

●`[role]` values are valid

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

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

●Buttons have an accessible name

●`[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

●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

●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.

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[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 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

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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

○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.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	www.readcube.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.readcube.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	www.readcube.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

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.

Source	Description
/wp-content/uploads/bb-plugin/cache/12-layout.js?ver=8707... line 76, col 613	`TypeError: Cannot read properties of null (reading 'offsetTop') at HTMLDocument.<anonymous> (https://www.readcube.com/wp-content/uploads/bb-plugin/cache/12-layout.js?ver=8707a6fa06f3495d4b731e299ad3bda0:77:614)`

●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

●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

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 destination	Link Text
www.readcube.com/en/ai-assistant/	Learn More
www.readcube.com/en/ai-assistant/	Learn More
www.readcube.com/en/solution/readcube/	Learn More
www.readcube.com/en/solution/readcube-pro/	Learn More
www.readcube.com/en/solution/readcube-slr/	Learn More

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
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`
article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo `article.logo-wrapper > div.logo-marquee > div.logo-marquee__group > img.marquee_logo`

hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more about `hreflang`.

Why this matters

Performance issues directly impact user engagement and conversion rates.


`head > link`
`head > link`
`head > link`
`head > link`

Canonical links suggest which URL to show in search results. Learn more about canonical links.

Why this matters

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

Source: MDN Permissions-Policy

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
Literature Monitoring `div.cycle-tab-container > ul.nav > li.cycle-tab-item > a.nav-link`
Literature Management `div.cycle-tab-container > ul.nav > li.cycle-tab-item > a.nav-link`
AI Assistant `div.cycle-tab-container > ul.nav > li.cycle-tab-item > a.nav-link`
Literature Review `div.cycle-tab-container > ul.nav > li.cycle-tab-item > a.nav-link`

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