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Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
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Detailed Report
Audit breakdown by category with detailed findings.
91
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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:117.3 source:map[column:1110 line:9 type:source-location url:https://phys.b-cdn.net/tmpl/v6/js/libs.4263044905.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:117.3 source:map[column:1835 line:8 type:source-location url:https://phys.b-cdn.net/tmpl/v6/js/libs.4263044905.js urlProvider:network]]]
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-A
nodeLabel: div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image
path: 1,HTML,1,BODY,2,MAIN,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,ARTICLE,0,FIGURE,0,A
selector: div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image
snippet: <a href="https://phys.org/news/2026-04-mosses-thale-cress-leaf-growth.html" class="accent-figure__image news-link" style="background-image: url(https://scx1.b-cdn.net/csz/news/800/2026/moss.jpg);">
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
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 |
|---|---|---|
| fonts.googleapis.com/css?family=Open+Sans:400,400i,700 | 1.9 KiB | |
| fonts.googleapis.com/css?family=Roboto:400,500,700 | 2.1 KiB | 246 ms |
| phys.b-cdn.net/tmpl/v6/css/style.646686822.css | 15.5 KiB | |
| phys.b-cdn.net/tmpl/v6/css/libs.646686822.css | 30.5 KiB | 247 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 |
|---|---|---|
| /pagead/managed/js/activeview/current/ufs_web_display.js | 3600.0 s | 73.1 KiB |
| s0.2mdn.net/ads/studio/Enabler.js | 900.0 s | 52.4 KiB |
| /pagead/managed/js/adsense/m202604200101/show_ads_impl_fy... | 1209600.0 s | 177.5 KiB |
| phys.b-cdn.net/tmpl/v6/js/libs.4263044905.js | 604800.0 s | 129.9 KiB |
| /QBFRtdmLtzPdhR2s_4zfk8c7wtijDii4SefJARhYWdYj86b7y5-ktd2U... | 86400.0 s | 9.6 KiB |
| phys.b-cdn.net/tmpl/v6/css/libs.646686822.css | 604800.0 s | 30.5 KiB |
| phys.b-cdn.net/tmpl/v6/css/style.646686822.css | 604800.0 s | 15.5 KiB |
| /pagead/js/r20260420/r20110914/elements/html/interstitial... | 1209600.0 s | 9.5 KiB |
| tpc.googlesyndication.com/pagead/js/r20260420/r20110914/abg_lite_fy2021.js | 1209600.0 s | 8.4 KiB |
| /pagead/js/r20260420/r20110914/elements/html/fullscreen_a... | 1209600.0 s | 7.1 KiB |
| rules.quantcount.com/rules-p-5dNhPAnM9r0yY.js | 3600.0 s | 633 B |
| phys.b-cdn.net/tmpl/v6/js/common.646686822.js | 604800.0 s | 4.7 KiB |
| phys.b-cdn.net/tmpl/v6/js/svgxuse.4263044905.js | 604800.0 s | 2.0 KiB |
| pagead2.googlesyndication.com/pagead/osd.js?fcd=true | 3600.0 s | 76 B |
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.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
div.mb-4 > figure.ads-tmb > a > img div.mb-4 > figure.ads-tmb > a > img | phys.org/banner/acs-003.jpg | 8.8 KiB | 8.0 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
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: 40 ms 38.1 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| phys.b-cdn.net/tmpl/v6/css/libs.646686822.css | 29.8 KiB | 26.9 KiB |
| phys.b-cdn.net/tmpl/v6/css/style.646686822.css | 14.8 KiB | 11.1 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: 40 ms 772.9 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 361.8 KiB | 241.8 KiB |
| /pagead/managed/js/adsense/m202604200101/show_ads_impl_fy... | 177.5 KiB | 121.3 KiB |
| phys.b-cdn.net/tmpl/v6/js/libs.4263044905.js | 129.2 KiB | 90.4 KiB |
| /pagead/managed/js/gpt/m202604090102/pubads_impl.js?cb=31... | 187.6 KiB | 88.5 KiB |
| www.googletagmanager.com/gtag/js?id=G-6M86390YBL | 172.2 KiB | 65.1 KiB |
| pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 54.3 KiB | 43.5 KiB |
| fundingchoicesmessages.google.com/i/4988204?ers=3 | 70.4 KiB | 33.4 KiB |
| /pagead/managed/js/activeview/current/ufs_web_display.js | 73.1 KiB | 32.6 KiB |
| s0.2mdn.net/ads/studio/Enabler.js | 51.9 KiB | 28.9 KiB |
| pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 54.3 KiB | 27.3 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 | 850 ms |
| Style & Layout | 493 ms |
| Other | 402 ms |
| Script Parsing & Compilation | 155 ms |
| Rendering | 105 ms |
| Parse HTML & CSS | 88 ms |
| Garbage Collection | 32 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 reason | Failure type |
|---|---|
| The page has an unload handler in a sub frame. | Actionable |
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 | |
|---|---|
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/150-year-old-museum-sp.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/put-a-nanodiamond-unde.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/b-cells-that-fight-inf.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/targeting-the-yin-and.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/novel-house-design-cut.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/liquid-droplet-mops-fo-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2022/liver-2.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/molecular-keyhole-shed.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/researchers-develop-sc.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/mars-rover-detects-nev.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/a-laser-based-approach.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/repeating-fast-radio-b.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/novel-antimicrobial-po.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/the-emergence-of-a-new-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/pressure-tuned-quantum.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/ai-can-use-a-photo-of.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2018/4-milkyway.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/quantum-dots-for-light.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/camera-footage-of-a-ca.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2024/black-bear.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/researchers-disable-an.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/batteries-not-included.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/simple-ocean-based-mod.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/fighting-oral-cancer-w.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/researchers-shed-light-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/ai-voices-are-easier-t-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/what-can-chinese-chara.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/175u/2026/one-step-method-reveal.jpg |
Phys.org div.row > div.col-3 > a.navbar-brand > img | phys.b-cdn.net/tmpl/v6/img/logo-header.png |
article.selection-article > figure.selection-article__figure > a.selection-article__image > img article.selection-article > figure.selection-article__figure > a.selection-article__image > img | scx1.b-cdn.net/csz/news/tmb/2026/atlas-acts-as-a-cosmic.jpg |
article.selection-article > figure.selection-article__figure > a.selection-article__image > img article.selection-article > figure.selection-article__figure > a.selection-article__image > img | scx1.b-cdn.net/csz/news/tmb/2026/plastics-found-in-toma.jpg |
article.selection-article > figure.selection-article__figure > a.selection-article__image > img article.selection-article > figure.selection-article__figure > a.selection-article__image > img | scx1.b-cdn.net/csz/news/tmb/2026/better-fed-calves-are.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/targeting-the-yin-and.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/novel-house-design-cut.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/study-reveals-dynamic.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/how-immune-cell-networ.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/new-insights-into-card.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/scientists-identify-a-2.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/a-natural-antioxidant-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/sun-tan.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2022/liver-2.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/molecular-keyhole-shed.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/b-cells-that-fight-inf.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/ai-can-use-a-photo-of.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/under-the-hood-of-cell.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/play-piano.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/fighting-oral-cancer-w.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/in-alzheimers-disease.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/drinking-coffee.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2024/schoolgirl.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2020/1-blood.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/researchers-combine-po.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/extra-sets-of-chromoso.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2022/heart-valve.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2025/rugby.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2024/ivf.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2025/blood-test-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2024/sad-teen.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/covid-snacking-habits.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/toddler-costume.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/can-a-deaf-persons-bra.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/new-research-identifie-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/liquid-droplet-mops-fo-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/working-with-ai.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/researchers-show-how-s.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2024/ransomware.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/batteries-not-included.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/decommissioning-old-wi-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/ai-voices-are-easier-t-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/what-can-chinese-chara.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/tangled-mind.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/researchers-develop-co.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/seeing-clearly-even-in-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/apples-new-ceo-john-te.jpg |
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div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/woman-online.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/robot-using-computer.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2024/wikipedia.jpg |
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div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/as-amazon-invests-bill.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/apple-ceo-tim-cook-was.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/renewable-energies-ove.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/tim-cook-will-step-dow.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/researchers-develop-br-2.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/nus-cde-researchers-de-2.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/tag-teaming-turbulence-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/cruise-control.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/riding-a-bike-1.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/energy-efficient-cooli.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/a-truly-invisible-devi.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/novel-multi-material-3.jpg |
div.d-flex > figure.sorted-article-figure > a > img div.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/handle-with-care-soft-1.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/nasa-on-track-for-futu.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/goose-poop-could-fuel.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/fresh-look-at-crab-neb.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/genome-editing-turns-r.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/kid-screen-time.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/us-climate-sees-declin.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/how-bruce-the-halfbeak.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/new-plastic-film-cover-1.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/earth-day-started-as-a.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/logging.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/reading-social-media.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/supermarket-surplus.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/nasa-rolls-out-artemis.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/violence.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/telling-people-they-mi.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/euclid-space-warpshelp.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/study-highlights-possi.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/small-scale-and-backya.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/price-of-a-home.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/floatable-biodegradabl.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/the-fast-track-tree-br.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/earthquake-sets-off-br.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/trade-agreement.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/promoting-communicatio.jpg |
article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/golden-retriever.jpg |
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article.d-flex > figure.sorted-article-figure > a > img article.d-flex > figure.sorted-article-figure > a > img | scx1.b-cdn.net/csz/news/tmb/2026/well-placed-poplar-pla-1.jpg |
Tech Xplore ul.d-flex > li.nav-item > a.nav-link > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/techX_w.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/techexploer.svg |
div.selection > div > h3.text-middle > img div.selection > div > h3.text-middle > img | phys.b-cdn.net/tmpl/v6/img/techexploer.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/techexploer.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/techexploer.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/techexploer.svg |
Medical Xpress ul.d-flex > li.nav-item > a.nav-link > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.selection > div > h3.text-middle > img div.selection > div > h3.text-middle > img | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
div.article__info-item > div.text-low > p > img.icon-logo div.article__info-item > div.text-low > p > img.icon-logo | phys.b-cdn.net/tmpl/v6/img/MedicalXpress2.svg |
More information about the performance of your application. These numbers don't directly affect the Performance score.
●Max Potential First Input Delay 100 ms
●Layout shift culprits
●Document request latency
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,579 KiB
●User Timing marks and measures 7 user timings
●JavaScript execution time 0.8 s
●Avoid long main-thread tasks 7 long tasks 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
●Avoid multiple page redirects
●Initial server response time was short Root document took 60 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○Avoid non-composited animations
75
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 |
|---|
Featured
Last Comments
Popular
Dialog div.row > div.col-5 > div.categories > ul.categories-controls |
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 |
|---|
Featured div.categories > ul.categories-controls > li.categories-controls__item > a#nav-featured-tab |
Last Comments div.categories > ul.categories-controls > li.categories-controls__item > a#nav-comments-tab |
Popular div.categories > ul.categories-controls > li.categories-controls__item > a#nav-popular-tab |
Dialog div.categories > ul.categories-controls > li.categories-controls__item > a#nav-popular-tab |
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 |
|---|
div.row > div.col-12 > form.header-search > button.header-search__show div.row > div.col-12 > form.header-search > button.header-search__show |
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.row > div.col-12 > div.dropdown > a.header-account div.row > div.col-12 > div.dropdown > a.header-account |
form > div.text-center > p.mb-2 > a.login-link |
form > div.text-center > p.mb-2 > a.login-link |
form > div.text-center > p.mb-2 > a.login-link form > div.text-center > p.mb-2 > a.login-link |
div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image |
div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image div.col-6 > article.accent > figure.accent-figure > a.accent-figure__image |
div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image |
div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image |
div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image div.selection-link > article.selection-article > figure.selection-article__figure > a.selection-article__image |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a article.sorted-news-list > div.d-flex > figure.sorted-article-figure > a |
div#side-ad > div.mb-4 > figure.ads-tmb > a div#side-ad > div.mb-4 > figure.ads-tmb > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
div.col-12 > div.d-flex > figure.sorted-article-figure > a div.col-12 > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
article.sorted-article > div.d-flex > figure.sorted-article-figure > a article.sorted-article > div.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a div.sorted-news-list > article.d-flex > figure.sorted-article-figure > a |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
div.col-md-6 > ul.follow > li.follow-item > a.follow-link div.col-md-6 > ul.follow > li.follow-item > a.follow-link |
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 |
|---|
LAST UPDATE: div.col-sm-12 > div > p.text-muted > span.text-uppercase |
3 minutes ago div.col-sm-12 > div > p.text-muted > time |
Date ul.breaking-sorting > li.breaking-sorting__item > a.breaking-sorting__button > span |
Rank ul.breaking-sorting > li.breaking-sorting__item > a.breaking-sorting__button > span |
LiveRank ul.breaking-sorting > li.breaking-sorting__item > a.breaking-sorting__button > span |
Popular ul.breaking-sorting > li.breaking-sorting__item > a.breaking-sorting__button > span |
GENERAL PHYSICS div.article__info > div.article__info-item > div.text-low > p |
43 MINUTES AGO figcaption.selection-article__description > div.article__info > div.article__info-item > p.text-uppercase |
PLANTS & ANIMALS div.article__info > div.article__info-item > div.text-low > p |
23 MINUTES AGO figcaption.selection-article__description > div.article__info > div.article__info-item > p.text-uppercase |
PLANTS & ANIMALS div.article__info > div.article__info-item > div.text-low > p |
1 HOUR AGO figcaption.selection-article__description > div.article__info > div.article__info-item > p.text-uppercase |
EVOLUTION div.article__info > div.article__info-item > div.text-low > p |
1 HOUR AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
NANOPHYSICS div.article__info > div.article__info-item > div.text-low > p |
report div.article__info-item > span.mr-3 > a > span.ml-2 |
3 HOURS AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
report div.article__info-item > span.mr-3 > a > span.ml-2 |
2 HOURS AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
1 HOUR AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
23 MINUTES AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
ENERGY & GREEN TECH div.article__info > div.article__info-item > div.text-low > p |
3 MINUTES AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
1 HOUR AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
1 HOUR AGO article.sorted-news-list > div.article__info > div.article__info-item > p.text-uppercase |
CORPORATE SPONSOR PROGRAM div.col-5 > div#side-ad > header.text-muted > a.text-muted |
Featured div.categories > ul.categories-controls > li.categories-controls__item > a#nav-featured-tab |
Last Comments div.categories > ul.categories-controls > li.categories-controls__item > a#nav-comments-tab |
Popular div.categories > ul.categories-controls > li.categories-controls__item > a#nav-popular-tab |
Dialog div.categories > ul.categories-controls > li.categories-controls__item > a#nav-popular-tab |
Medical Xpress div.col-5 > div.selection > div > h3.text-middle |
Tech Xplore div.col-5 > div.selection > div > h3.text-middle |
BIOCHEMISTRY div.article__info > div.article__info-item > div.text-low > p |
2 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
ASTROBIOLOGY div.article__info > div.article__info-item > div.text-low > p |
10 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
77 div.article__info > div.article__info-item > p.text-uppercase > span |
NANOPHYSICS div.article__info > div.article__info-item > div.text-low > p |
feature div.article__info-item > span.mr-3 > a > span.ml-2 |
7 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
ASTRONOMY div.article__info > div.article__info-item > div.text-low > p |
report div.article__info-item > span.mr-3 > a > span.ml-2 |
3 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
POLYMERS div.article__info > div.article__info-item > div.text-low > p |
2 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
SUPERCONDUCTIVITY div.article__info > div.article__info-item > div.text-low > p |
feature div.article__info-item > span.mr-3 > a > span.ml-2 |
4 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
CONDENSED MATTER div.article__info > div.article__info-item > div.text-low > p |
feature div.article__info-item > span.mr-3 > a > span.ml-2 |
7 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
2 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
ASTRONOMY div.article__info > div.article__info-item > div.text-low > p |
2 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
NANOPHYSICS div.article__info > div.article__info-item > div.text-low > p |
3 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
PLANTS & ANIMALS div.article__info > div.article__info-item > div.text-low > p |
report div.article__info-item > span.mr-3 > a > span.ml-2 |
5 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
PLANTS & ANIMALS div.article__info > div.article__info-item > div.text-low > p |
3 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
CELL & MICROBIOLOGY div.article__info > div.article__info-item > div.text-low > p |
6 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
ENGINEERING div.article__info > div.article__info-item > div.text-low > p |
6 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
EARTH SCIENCES div.article__info > div.article__info-item > div.text-low > p |
6 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
MEDICAL XPRESS div.article__info > div.article__info-item > div.text-low > p |
7 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
MOLECULAR & COMPUTATIONAL BIOLOGY div.article__info > div.article__info-item > div.text-low > p |
7 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
CONSUMER & GADGETS div.article__info > div.article__info-item > div.text-low > p |
4 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
ENGINEERING div.article__info > div.article__info-item > div.text-low > p |
4 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
CELL & MICROBIOLOGY div.article__info > div.article__info-item > div.text-low > p |
4 HOURS AGO article.sorted-article > div.article__info > div.article__info-item > p.text-uppercase |
These are opportunities to improve the legibility of your content.
Navigation
Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
More effective, longer-lasting sunscreen made from natural extracts article.accent > figure.accent-figure > figcaption.accent-figure__desription > h3.text-large |
Inside tumors, immune cells hide a split personality—and one side could quietly… div.col-12 > div.d-flex > div.sorted-article-content > h5 |
'Liquid droplet mops' clean solar panels with 99.9% efficiency, cutting water u… div.col-12 > div.d-flex > div.sorted-article-content > h5 |
These are opportunities to improve keyboard navigation in your application.
Tables and lists
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 |
|---|
Featured div.col-5 > div.categories > ul.categories-controls > li.categories-controls__item |
Last Comments div.col-5 > div.categories > ul.categories-controls > li.categories-controls__item |
Popular div.col-5 > div.categories > ul.categories-controls > li.categories-controls__item |
Dialog div.col-5 > div.categories > ul.categories-controls > li.categories-controls__item |
These are opportunities to improve the experience of reading tabular or list data using 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
●`[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.
●`button`, `link`, and `menuitem` elements have accessible names
●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
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○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 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.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77
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 |
|---|---|
| Unload event listeners are deprecated and will be removed. | s0.2mdn.net/ads/studio/Enabler.js line 157, col 9 |
| SharedStorage | /pagead/managed/js/activeview/current/ufs_web_display.js line 252, col 234 |
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 |
|---|---|
A bad HTTP response code (400) was received when fetching the script. | |
TypeError: Failed to register a ServiceWorker for scope ('https://phys.org/') with script ('https://phys.org/push-sw.js'): A bad HTTP response code (400) was received when fetching the script. | |
phys.org/ line 178, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 184, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 191, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 231, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 236, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 241, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 404, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 410, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 416, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 439, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 445, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 451, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 490, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 496, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 502, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 535, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 541, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 547, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 580, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 586, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 592, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 634, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 642, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 648, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 681, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 689, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 695, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 729, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 743, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 774, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 782, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 788, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 864, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 872, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 878, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 909, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 917, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 954, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 962, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 1018, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 1024, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2030, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2068, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2076, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2212, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2371, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2403, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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phys.org/ line 2457, col 0 | Unsafe attempt to load URL https://phys.b-cdn.net/tmpl/v6/img/svg/sprite.svg from frame with URL https://phys.org/. Domains, protocols and ports must match.
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●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
83
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 |
|---|---|
| sciencex.com/help/account/ | Learn 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 |
|---|
Push notification nav.nav > ul.nav > li.nav-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
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid