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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.

41

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 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:43.276 source:map[type:text value:[unattributed]]]]

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
the all in one repository a home for papers, FAIR data and non-traditional rese… div.mGtOh > main.yr0BG > div > div.wQjZY
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...1011.5 KiB920.1 KiB
cloud solutions for publishers figshare enables you to host large amounts of da… div.mGtOh > main.yr0BG > div > div.Ba7eZ
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...453.8 KiB362.4 KiB
publish big datasets our Figshare+ repository allows figshare users to share la… div.mGtOh > main.yr0BG > div > div._9Wyxt
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...304.9 KiB213.5 KiB
Comparative model of novel coronavirus 2019 main.yr0BG > div > div.gksp8 > img.o20Lq
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...319.4 KiB84.7 KiB
The True Benefits of Designing Design Methods div.zzfyc > a._3+kae > div.NjCJ1 > img.Rdfce
s3-eu-west-1.amazonaws.com/ppreviews-rmit-0039450820/63943287/thumb.png22.2 KiB16.3 KiB
The University of Melbourne logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...15.2 KiB13.8 KiB
How curriculum frameworks cultivate democratic and historical consciousness div.zzfyc > a._3+kae > div.NjCJ1 > img.Rdfce
/figshare-production-eu-newcastle-previews6746-ap-southea...18.8 KiB12.9 KiB
SMU Research Data Repository logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...11.7 KiB9.9 KiB
The University of Auckland logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...10.9 KiB9.6 KiB
Iowa State University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...9.1 KiB8.0 KiB
The University of Arizona logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...8.7 KiB7.5 KiB
Institute of Physics logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.8 KiB7.1 KiB
F1000 Research logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.8 KiB6.8 KiB
Taylor & Francis Group logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.9 KiB6.8 KiB
Frontiers logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.7 KiB6.5 KiB
Stockholm University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.1 KiB6.4 KiB
The Royal Society Publishing logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.5 KiB6.4 KiB
The University of Oxford logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.4 KiB6.0 KiB
Microbiology Society logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...6.7 KiB5.9 KiB
Janelia Research Campus logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...7.0 KiB5.9 KiB
Genetics Society of America logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...6.8 KiB5.8 KiB
The United States Environmental Protection Agency’s Center for Computational To… div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...6.9 KiB5.8 KiB
Tech Rxiv logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...6.9 KiB5.5 KiB
The Francis Crick Institute logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.8 KiB5.2 KiB
Carnegie Mellon University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...6.2 KiB5.1 KiB
OSA Publishing logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.9 KiB4.9 KiB
Advance logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.7 KiB4.9 KiB
Sage Journals logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.6 KiB4.8 KiB
Brill Publishers logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.2 KiB4.7 KiB
University of Cape Town logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...5.3 KiB4.4 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-3-IMG
nodeLabel: Comparative model of novel coronavirus 2019
path: 1,HTML,1,BODY,0,DIV,0,DIV,1,DIV,4,MAIN,0,DIV,0,DIV,0,IMG
selector: main.yr0BG > div > div.gksp8 > img.o20Lq
snippet: <img alt="Comparative model of novel coronavirus 2019" class="o20Lq" src="https://websitev3-p-eu.figstatic.com/assets-v3/b5eb4279ab77fc1c08853c74248…">

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
value: no origins were preconnected
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
value: No additional origins are good candidates for preconnecting

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
/SIE/?Q_ZID=ZN_7QXt10CASDcBqvA3600.0 s4.6 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...604800.0 s35.8 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...604800.0 s30.9 KiB
/dxjsmodule/FeedbackButtonModule.js?Q_CLIENTVERSION=2.46....604800.0 s19.4 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...604800.0 s18.6 KiB
/dxjsmodule/1.bc67e778235741631577.chunk.js?Q_CLIENTVERSI...604800.0 s7.1 KiB
/dxjsmodule/7.f7df015b06d8a90ce822.chunk.js?Q_CLIENTVERSI...604800.0 s1.4 KiB

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
s3-eu-west-1.amazonaws.com/ppreviews-rmit-0039450820/63943287/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943293/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943290/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943284/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943281/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943278/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943275/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943266/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943257/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943254/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943251/thumb.pnghttp/1.1
s3-eu-west-1.amazonaws.com/pfigshare-u-previews/63943245/thumb.pnghttp/1.1

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
fonts.googleapis.com/css?family=B612|B612+Mono|Roboto&display=swap2.1 KiB265 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: 935 ms
URLTime Spent
figshare.com/935 ms
figshare.com/0.0 ms

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

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 2.5 MiB
URLTransfer SizeEst Savings
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...1.6 MiB1.6 MiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/clien...1.0 MiB585.4 KiB
/64b6c62dfbe5/d5e199e0e037/e913bb7e8153/challenge.js575.3 KiB314.3 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...35.7 KiB21.2 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/clien...847 ms631 ms155 ms
figshare.com/538 ms11 ms1.2 ms
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...456 ms181 ms250 ms
Unattributable253 ms54 ms0.0 ms
/64b6c62dfbe5/d5e199e0e037/e913bb7e8153/challenge.js239 ms173 ms43 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...59 ms47 ms4.4 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation1.1 s
Other550 ms
Script Parsing & Compilation469 ms
Style & Layout144 ms
Rendering93 ms
Parse HTML & CSS46 ms
Garbage Collection13 ms

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
Pages with WebSocket cannot enter back/forward cache.Pending browser support

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...1.7 MiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/clien...1.0 MiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...1013.8 KiB
/64b6c62dfbe5/d5e199e0e037/e913bb7e8153/challenge.js575.7 KiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...454.9 KiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...320.1 KiB
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...305.7 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...35.8 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...30.9 KiB
figshare.com/28.0 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
SMU Research Data Repository logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
University of Amsterdam logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The University of Melbourne logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
figshare div.DRZ55 > div.+WuQ4 > a._3+kae > img.gPhOQ
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Tech Rxiv logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The University of Auckland logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The University of Oxford logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Janelia Research Campus logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The United States Environmental Protection Agency’s Center for Computational To… div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Frontiers logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The University of Arizona logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Iowa State University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Taylor & Francis Group logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Carnegie Mellon University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The Royal Society Publishing logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Genetics Society of America logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
F1000 Research logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
OSA Publishing logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Microbiology Society logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
University of Cape Town logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Digital Science div.ZPdKw > div.S98-o > a._3+kae > img
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Open Access div.ZPdKw > div.S98-o > a._3+kae > img
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
University College London logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Sage Journals logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Advance logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Stockholm University logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Institute of Physics logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
The Francis Crick Institute logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Plos logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Scielo logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Wellcome logo div.MtwY2 > div.bAnqY > a._3+kae > img.zL8cD
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
COPE div.ZPdKw > div.S98-o > a._3+kae > img
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Springer Nature logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
DataCite div.ZPdKw > div.S98-o > a._3+kae > img
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Brill Publishers logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Stockholm University logo div.bFsWy > div.giSWp > a._3+kae > img.xKxwd
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...
Data Citation Index div.ZPdKw > div.S98-o > a._3+kae > img
/assets-v3/b5eb4279ab77fc1c08853c74248888beecb93e0d/stati...

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●LCP breakdown
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●Avoid long main-thread tasks 7 long tasks found
●Network Requests
●Network Round Trip Times 330 ms
●Server Backend Latencies 440 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 570 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
79

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

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
DATASET Performance Measurements for the AMG Benchmark on the Aurora Supercompu… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
THESIS The collection and compilation of household survey data for applications… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
How curriculum frameworks cultivate democratic and historical consciousness Jo… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
The True Benefits of Designing Design Methods Journal contribution posted on 2… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
he Logistic Map under an Algebraic and Journal contribution posted on 2026-04-… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Chaos in Classical Discrete Maps: an Analytical Journal contribution posted on… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Linear Operators Associated with Dynamical Journal contribution posted on 2026… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Hybrid Tubular System (Water–Air) for Sustainable Coastal and Interurban Transp… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Semigroups and Abstract Formulation of Differential Journal contribution poste… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Continuous Dependence of Solutions on Delay Journal contribution posted on 202… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Robust Stability Criteria for Systems with Journal contribution posted on 2026… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Hopf Normal Form of Bifurcation in Equations with Journal contribution posted … div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Reduction to the Central Manifold in Systems with Journal contribution posted … div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Local Bifurcation Theory in Functional Differential Journal contribution poste… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
DATASET Supplemental Material: Islas Marías Archipelago: A missing fragment bet… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+
Periodic Solutions in Functional Differential Journal contribution posted on 2… div._7nwZd > div.bAFXx > ul.GyUKC > div.VhwO+

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
DATASET Performance Measurements for the AMG Benchmark on the Aurora Supercompu… div.twVPN > div._7nwZd > div.bAFXx > ul.GyUKC

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
Cookie consent This website uses cookies for analytics and improving your on-li… div#app > fecore-ui-overlays#fecore-ui-overlays > aside.yz2Kv > section._6Ad4s

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Heather Sharp div.zzfyc > div.PyHS0 > div.oHUKK > button._3+kae
Peter Schaaf div.zzfyc > div.PyHS0 > div.oHUKK > button._3+kae

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.

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 div.kXKPO > h1.c+5+G > div.dqolT > span.ey0mP

These are opportunities to improve the legibility of your content.

○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-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
●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
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●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
○`[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
○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.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
96

Best Practices

General

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
●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
●Ensure CSP is effective against XSS attacks
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
92

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

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.

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

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