Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:5.164 source:map[column:24036 line:1 type:source-location url:https://www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-app.8bb1cdbb.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:34.717 source:map[column:204 line:0 type:source-location url:https://www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-inpl.loading.288b0553.js urlProvider:network]] map[reflowTime:67.895 source:map[column:56 line:6445 type:source-location url:https://www.interia.pl/ urlProvider:network]] map[reflowTime:0.866 source:map[column:25744 line:0 type:source-location url:https://js.iplsc.com/iwa3/3.0.149/new/main.iwa.js urlProvider:network]] map[reflowTime:1.012 source:map[column:19080 line:0 type:source-location url:https://www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-app.8bb1cdbb.js urlProvider:network]] map[reflowTime:0.973 source:map[column:24253 line:0 type:source-location url:https://www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-app.8bb1cdbb.js urlProvider:network]] map[reflowTime:4.191 source:map[column:24296 line:0 type:source-location url:https://www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-app.8bb1cdbb.js urlProvider:network]] map[reflowTime:0.162 source:map[column:347 line:66 type:source-location url:https://interia.hit.gemius.pl/xgemius.js urlProvider:network]]]

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
ul.news-ul > li.news-li > a.tile-a > img.tile-img `ul.news-ul > li.news-li > a.tile-a > img.tile-img`	msg2021.iplsc.com/ext/000MORG1UYAJVTHY-C454.jpg	47.5 KiB	31.9 KiB
ul.news-ul > li.news-li > a.tile-a > img.tile-img `ul.news-ul > li.news-li > a.tile-a > img.tile-img`	msg2021.iplsc.com/ext/000MOMQOBPM183TT-C454.jpg	45.0 KiB	29.4 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MOOL6WS905QDL-C490.jpg	27.8 KiB	25.9 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MONPBWQ1T3YL3-C490.jpg	24.3 KiB	22.3 KiB
ul.wiadspec-ul > li.news-li > a.tile-a > img.tile-img `ul.wiadspec-ul > li.news-li > a.tile-a > img.tile-img`	msg2021.iplsc.com/ext/000MORNKKLBS0N9D-C454.jpg	37.3 KiB	21.8 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MOQM37FH9QYNE-C490.jpg	22.1 KiB	20.1 KiB
Anna Nicz `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5VYCUP23CF6L-C50.png	19.6 KiB	19.3 KiB
Wiktor Kazanecki `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5UK7ESUTOU9P-C50.png	19.2 KiB	18.9 KiB
Marta Kurzyńska `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000KAAQQ3IB3I8PT-C50.png	17.6 KiB	17.3 KiB
Jakub Krzywiecki `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5VYIKAS47NPK-C50.png	17.0 KiB	16.7 KiB
Zdanowicz pomiędzy wersami `ul.header-widget > li.header-li > a.header-a > img.podcast-img`	msg2021.iplsc.com/ext/000HNPF5GMT9S8R6-C50.png	17.0 KiB	16.7 KiB
Dagmara Pakuła `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000M8J45YAFEPDPH-C50.png	16.6 KiB	16.3 KiB
Gwiazdowski mówi Interii `ul.header-widget > li.header-li > a.header-a > img.podcast-img`	msg2021.iplsc.com/ext/000HNPFCWTHW5XD1-C50.png	15.4 KiB	15.1 KiB
Justyna Kaczmarczyk `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5ED188HTMMBQ-C50.png	15.2 KiB	14.9 KiB
Jolanta Kamińska `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5ZZKRJD9642Y-C50.png	14.7 KiB	14.4 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MORK9L7BWPRSL-C490.jpg	16.1 KiB	14.2 KiB
Cezary Michalski `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKZ0ADSYF8VR7-C50.png	14.1 KiB	13.8 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MORMGOT2V69TD-C490.jpg	15.7 KiB	13.8 KiB
Andrzej Krajewski `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LXRSOJ8K7AUDC-C50.png	14.1 KiB	13.7 KiB
Przemysław Białkowski `ul.header-widget > li.header-li > a.header-a > img.podcast-img`	msg2021.iplsc.com/ext/000JUHTXH2U3U2QI-C50.png	14.0 KiB	13.7 KiB
Tomasz Sajewicz `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKZ0G6I40NBNC-C50.png	13.8 KiB	13.4 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MOR9525JB018Y-C490.jpg	15.3 KiB	13.4 KiB
Dominik Héjj `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKYX97SCCOF6I-C50.png	13.7 KiB	13.3 KiB
Antoni Dudek `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKY2Q8PT2RO4L-C50.png	13.6 KiB	13.2 KiB
Leszek Jażdżewski `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKYXEKGKGO26S-C50.png	13.5 KiB	13.1 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MORJN2G47MNBP-C490.jpg	14.9 KiB	13.0 KiB
Jarosław Kuisz `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKZ07PQHAWQ0T-C50.png	13.1 KiB	12.8 KiB
Jan Radomski `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LSR7405REQHAX-C50.png	12.3 KiB	11.9 KiB
Bartosz Rydliński `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000M6MZYQU3V9J0E-C50.png	12.1 KiB	11.8 KiB
Dawid Serafin `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5EOSGXCT8MFA-C50.png	11.8 KiB	11.5 KiB
Andrzej Kohut `ul.header-widget > li.header-li > div.header-box > img`	msg2021.iplsc.com/ext/000LKYXKOF490AD1-C50.png	11.8 KiB	11.5 KiB
Łukasz Rogojsz `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5EC3RBBM62RM-C50.png	11.3 KiB	11.0 KiB
Polityczny WF `ul.header-widget > li.header-li > a.header-a > img.podcast-img`	msg2021.iplsc.com/ext/000LNWQ7GLL8ECII-C50.png	11.2 KiB	10.9 KiB
Łukasz Szpyrka `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5EBM8FERP6RD-C50.png	10.8 KiB	10.5 KiB
Piotr Witwicki `ul.header-widget > li.header-li > a.header-a > img`	msg2021.iplsc.com/ext/000G5E875SKIVVTF-C50.png	10.5 KiB	10.2 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MORIWKY71KR4C-C490.jpg	10.2 KiB	8.3 KiB
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`	msg2021.iplsc.com/ext/000MORDLX4P82KPW-C490.jpg	9.1 KiB	7.3 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-4-IMG

nodeLabel: ul.wiadspec-ul > li.news-li > a.tile-a > img.tile-img

path: 1,HTML,1,BODY,10,SECTION,0,DIV,0,DIV,1,UL,0,LI,0,A,0,IMG

selector: ul.wiadspec-ul > li.news-li > a.tile-a > img.tile-img

snippet: <img data-attachment="000MORNKKLBS0N9D" class="tile-img" src="https://msg2021.iplsc.com/ext/000MORNKKLBS0N9D-C454.jpg" alt="">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

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
msg2021.iplsc.com/build/7b7747ec045ae606eb720a1222f56098-news.4278b67e.css	3.4 KiB
msg2021.iplsc.com/build/7b7747ec045ae606eb720a1222f56098-app.daa14665.css	9.5 KiB
msg2021.iplsc.com/build/7b7747ec045ae606eb720a1222f56098-core.048a56fb.css	17.9 KiB	1.1 s
www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-inpl.swipe.9c1d7089.js	3.7 KiB
www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-videoplayers.ffeda734.js	2.1 KiB
www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-common.bf712321.js	1.7 KiB
www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-vendors.fa8239f3.js	12.4 KiB
www.interia.pl/build/7b7747ec045ae606eb720a1222f56098-runtime.d94b3b43.js	1016 B

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
interia.hit.gemius.pl/xgemius.js	43200.0 s	19.5 KiB
/getid.js?fpdata=i4KKSFtzOS3b.gHKUlxPBxU4mcWn_BysCmbq3Bu6...	0.0 ms	432 B
i.iplsc.com/msg-rollup/000MOQMXPJJ66FMS-C506.jpg	86400.0 s	0 B
i.iplsc.com/msg-rollup/000MORIQC12A76AW-C506.jpg	86400.0 s	0 B
i.iplsc.com/msg-rollup/000MOPD7DHCAF8VP-C506.jpg	86400.0 s	0 B
i.iplsc.com/msg-rollup/000MOQB2Y8AR0PKP-C506.jpg	86400.0 s	0 B
i.iplsc.com/msg-rollup/000MOO7K7TMNGCCM-C506.jpg	86400.0 s	0 B

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: 929 ms

URL	Time Spent
interia.pl/	929 ms
www.interia.pl/	0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 200 ms 13.3 KiB

URL	Transfer Size	Est Savings
msg2021.iplsc.com/build/7b7747ec045ae606eb720a1222f56098-core.048a56fb.css	17.7 KiB	13.3 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: 590 ms 89.7 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-KTT130KQ7K	161.7 KiB	66.6 KiB
js.iplsc.com/inpl.uanc/1.3.263/external/js/ado_4_9_0.js	27.8 KiB	23.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	1.1 s
Other	812 ms
Style & Layout	675 ms
Script Parsing & Compilation	134 ms
Rendering	132 ms
Parse HTML & CSS	92 ms
Garbage Collection	33 ms

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
Logo specjalne `div.page-header-container > div.logo > a > img.special`	msg2021.iplsc.com/ext/000L14H9N84XD24G.svg
technologia `ul.header-icon-widget > li.header-li > a.header-a > img`
nauka `ul.header-icon-widget > li.header-li > a.header-a > img`
kosmos `ul.header-icon-widget > li.header-li > a.header-a > img`
medycyna `ul.header-icon-widget > li.header-li > a.header-a > img`
ekologia `ul.header-icon-widget > li.header-li > a.header-a > img`
sniadania-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
zupy-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
obiady-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
ciasta-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
przekaski-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
salatki-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
przetwory-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
dodatki-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
pieczywo-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
wedliny-1 `ul.header-icon-widget > li.header-li > a.header-a > img`
przepisy `ul.header-icon-widget > li.header-li > a.header-a > img`
wnetrza `ul.header-icon-widget > li.header-li > a.header-a > img`
dekoracje `ul.header-icon-widget > li.header-li > a.header-a > img`
ogrody `ul.header-icon-widget > li.header-li > a.header-a > img`
teksciory `ul.header-icon-widget > li.header-li > a.header-a > img`

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

●Layout shift culprits

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,689 KiB

●User Timing marks and measures 5 user timings

●JavaScript execution time 1.0 s

●Avoid long main-thread tasks 10 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 50 ms

●Server Backend Latencies 160 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 50 ms

○INP breakdown

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

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

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Bardzo dobre `div.weather-alert > a.weather-alert__info > div.text > span`
INTERIA Z MADRYTU `li.news-li > a.listitem-a > div.listitem-img-wrapper > span.tile-label`
3 615,77 `ul.stock > li.header-li > a.header-a > span.value`
-0,67% `ul.stock > li.header-li > a.header-a > span.growth`
59 585,86 `ul.stock > li.header-li > a.header-a > span.value`
0,40% `ul.stock > li.header-li > a.header-a > span.growth`
49 490,03 `ul.stock > li.header-li > a.header-a > span.value`
0,69% `ul.stock > li.header-li > a.header-a > span.growth`
4,6207 `ul.stock > li.header-li > a.header-a > span.value`
0,00% `ul.stock > li.header-li > a.header-a > span.growth`
4,2440 `ul.stock > li.header-li > a.header-a > span.value`
ZIELONA INTERIA `li.news-li > a.listitem-a > div.listitem-img-wrapper > span.tile-label`
MUST BE THE MUSIC `ul.header-ul > li.header-li > a.header-a > span.header-span`
Copyright: `div.footer-item > ul.footer-ul > li.footer-li > span`
INTERIA.PL `div.footer-item > ul.footer-ul > li.footer-li > a.footer-a`
1999-2026 `div.footer-item > ul.footer-ul > li.footer-li > span`
naszych partnerów reklamowych (1018) `form.rodo-popup > div.rodo-popup-content > p > a`
PRZYPOMNIJ PÓŹNIEJ `body > form.rodo-popup > div.rodo-popup-content > button.rodo-popup-later`
USTAWIENIA PRYWATNOŚCI `body > form.rodo-popup > div.rodo-popup-buttons > button.rodo-popup-settings`
PRZEJDŹ DO SERWISU `body > form.rodo-popup > div.rodo-popup-buttons > button.rodo-popup-agree`

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
POWIETRZE `div.weather-alert > a.weather-alert__info > div.text > h4`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`

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
nav.column-switch > ul.tabbar-ul > li.tabbar-li > a.tabbar-a `nav.column-switch > ul.tabbar-ul > li.tabbar-li > a.tabbar-a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○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>`

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

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

●Buttons have an accessible name

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●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.

●Image elements do not have `[alt]` attributes that are redundant text.

●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

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○`[role]`s have all required `[aria-*]` attributes

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

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○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

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○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

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

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

100

Best Practices

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img `li.news-li > a.listitem-a > div.listitem-img-wrapper > img.listitem-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`
ul.news-ul > li.reels-li > a.tile-a > img.tile-img `ul.news-ul > li.reels-li > a.tile-a > img.tile-img`

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

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`