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

Audit breakdown by category with detailed findings.

76

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
krakow.pl/build/fonts/LatoLatin-Bold.b4fe4204.woff20.0 ms43.6 KiB
krakow.pl/build/fonts/LatoLatin-Semibold.b8c03b80.woff20.0 ms43.6 KiB
krakow.pl/build/fonts/LatoLatin-Regular.f42ffe0a.woff20.0 ms43.0 KiB
krakow.pl/build/fonts/LatoLatin-Black.88c59fed.woff20.0 ms42.7 KiB
plikimpi.krakow.pl/pliki/605079.jpg864000.0 s364.9 KiB
krakow.pl/build/1562.097959e8.js0.0 ms34.8 KiB
plikimpi.krakow.pl/pliki/622800.png864000.0 s320.3 KiB
krakow.pl/build/4692.8f03972d.js0.0 ms30.0 KiB
krakow.pl/build/index.89901dc0.css0.0 ms28.7 KiB
krakow.pl/build/7592.635850b7.js0.0 ms27.9 KiB
krakow.pl/build/8916.b206c4c5.js0.0 ms23.1 KiB
krakow.pl/build/8465.8c161ef5.js0.0 ms20.1 KiB
plikimpi.krakow.pl/pliki/629319.jpg864000.0 s188.8 KiB
krakow.pl/build/index.a627e642.js0.0 ms16.6 KiB
krakow.pl/build/6429.93794f19.js0.0 ms15.6 KiB
plikimpi.krakow.pl/pliki/636447.png864000.0 s142.5 KiB
plikimpi.krakow.pl/pliki/636255.jpg864000.0 s136.6 KiB
plikimpi.krakow.pl/zalacznik/571707/9.png864000.0 s118.3 KiB
plikimpi.krakow.pl/zalacznik/563145/9.png864000.0 s116.7 KiB
plikimpi.krakow.pl/zalacznik/572061/9.png864000.0 s110.7 KiB
plikimpi.krakow.pl/zalacznik/569922/9.png864000.0 s104.1 KiB
krakow.pl/build/img/dekorRight.svg0.0 ms10.3 KiB
krakow.pl/build/img/dekorLeft.svg0.0 ms9.5 KiB
krakow.pl/build/img/bip_logo.svg0.0 ms8.7 KiB
plikimpi.krakow.pl/zalacznik/571317/4.jpg864000.0 s75.8 KiB
krakow.pl/build/6797.e6c5a330.js0.0 ms7.4 KiB
plikimpi.krakow.pl/zalacznik/566199/2.jpg864000.0 s68.8 KiB
plikimpi.krakow.pl/zalacznik/572337/3.jpg864000.0 s62.0 KiB
krakow.pl/build/5806.47aeeeaf.js0.0 ms5.8 KiB
krakow.pl/build/4263.4b7439be.js0.0 ms4.0 KiB
krakow.pl/build/1157.35eb28b9.js0.0 ms3.6 KiB
krakow.pl/build/7185.0ab02b59.js0.0 ms3.5 KiB
plikimpi.krakow.pl/pliki/639039/3864000.0 s31.9 KiB
krakow.pl/build/670.d9dff637.js0.0 ms3.1 KiB
krakow.pl/build/6817.ab96cc01.js0.0 ms3.0 KiB
plikimpi.krakow.pl/pliki/636912/9864000.0 s28.4 KiB
krakow.pl/build/5266.fd7cf7eb.js0.0 ms2.8 KiB
plikimpi.krakow.pl/zalacznik/570465/9.jpg864000.0 s25.2 KiB
plikimpi.krakow.pl/zalacznik/571521/9.jpg864000.0 s23.3 KiB
plikimpi.krakow.pl/zalacznik/571341/9.jpg864000.0 s23.1 KiB
plikimpi.krakow.pl/zalacznik/571224/9.jpg864000.0 s21.0 KiB
plikimpi.krakow.pl/zalacznik/572121/frame_9_54471494.png864000.0 s20.9 KiB
krakow.pl/build/img/bip_logo_kontrast.png0.0 ms2.1 KiB
plikimpi.krakow.pl/zalacznik/571653/9.jpg864000.0 s19.1 KiB
plikimpi.krakow.pl/zalacznik/571674/frame_9_4175151610.jpg864000.0 s19.0 KiB
plikimpi.krakow.pl/pliki/638562/9864000.0 s18.8 KiB
plikimpi.krakow.pl/zalacznik/572415/9.jpg864000.0 s18.4 KiB
plikimpi.krakow.pl/zalacznik/571311/9.jpg864000.0 s18.1 KiB
krakow.pl/build/fonts.61187402.js0.0 ms1.8 KiB
plikimpi.krakow.pl/zalacznik/572007/9.jpg864000.0 s17.8 KiB
plikimpi.krakow.pl/zalacznik/571956/9.jpg864000.0 s17.6 KiB
krakow.pl/build/img/bip_mobile_logo.svg0.0 ms1.6 KiB
plikimpi.krakow.pl/zalacznik/571422/9.jpg864000.0 s13.4 KiB
plikimpi.krakow.pl/zalacznik/572268/9.jpg864000.0 s12.4 KiB
krakow.pl/build/img/pogoda_dobry.svg0.0 ms1.1 KiB
plikimpi.krakow.pl/pliki/324813/2.png864000.0 s10.7 KiB
plikimpi.krakow.pl/zalacznik/361775/2.jpg864000.0 s9.4 KiB
krakow.pl/build/img/pause_icon.svg0.0 ms693 B
krakow.pl/build/smog.7ad34dee.js0.0 ms564 B
plikimpi.krakow.pl/zalacznik/538527/2.jpg864000.0 s4.8 KiB
krakow.pl/build/smog.73c6644d.css0.0 ms265 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.25287] map[node:map[boundingRect:map[bottom:5660 height:5424 left:0 right:1350 top:237 width:1350] lhId:page-30-DIV nodeLabel:WSTRZYMAJ 8.5oC 1020.1  hPa Źródło danych: IMGW-PIB środa, 22 kwietnia 2026 Le… path:1,HTML,1,BODY,3,DIV selector:body.swal2-shown > div.main snippet:<div class="main" aria-hidden="true"> type:node] score:0.250633 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:736 height:48 left:737 right:785 top:688 width:48] lhId:page-41-IMG nodeLabel:Ikona pogody - dobra path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,IMG selector:div.forecast__air__content > div.forecast__air__state > a.forecast__air__state > img#img_ave snippet:<img src="/build/img/pogoda_dobry.svg" class="forecast__air__state__icon" id="img_ave" alt="Ikona pogody - dobra"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:532 height:172 left:153 right:1197 top:360 width:1044] lhId:page-34-P nodeLabel:Ochrona prywatności użytkowników naszego serwisu ma dla nas bardzo duże znaczen… path:1,HTML,1,BODY,24,DIV,0,DIV,5,DIV,1,P selector:div.swal2-container > div.swal2-popup > div#swal2-html-container > p.cookies snippet:<p class="cookies pad20"> type:node] score:0.001926 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:736 height:48 left:737 right:785 top:688 width:48] lhId:page-41-IMG nodeLabel:Ikona pogody - dobra path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,IMG selector:div.forecast__air__content > div.forecast__air__state > a.forecast__air__state > img#img_ave snippet:<img src="/build/img/pogoda_dobry.svg" class="forecast__air__state__icon" id="img_ave" alt="Ikona pogody - dobra"> type:node]] map[cause:Web font extra:map[type:url value:https://krakow.pl/build/fonts/LatoLatin-Regular.f42ffe0a.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:738 height:52 left:886 right:1280 top:686 width:395] lhId:page-39-FORM nodeLabel:średnia ze stacji Kraków-Kurdwanów Kraków, ul. Kamieńskiego Nowa Huta Kraków, u… path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,2,FORM selector:div.forecast > div.forecast__air > div.forecast__air__content > form.forecast__air__form snippet:<form class="forecast__air__form"> type:node] score:0.00017 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:736 height:48 left:737 right:785 top:688 width:48] lhId:page-41-IMG nodeLabel:Ikona pogody - dobra path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,IMG selector:div.forecast__air__content > div.forecast__air__state > a.forecast__air__state > img#img_ave snippet:<img src="/build/img/pogoda_dobry.svg" class="forecast__air__state__icon" id="img_ave" alt="Ikona pogody - dobra"> type:node]] map[cause:Web font extra:map[type:url value:https://krakow.pl/build/fonts/LatoLatin-Black.88c59fed.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:594 height:18 left:631 right:797 top:576 width:166] lhId:page-40-A nodeLabel:Polityka prywatności path:1,HTML,1,BODY,24,DIV,0,DIV,5,DIV,2,P,1,A selector:div.swal2-popup > div#swal2-html-container > p.cookies > a#coPol snippet:<a class="cookies__text__link" href="https://www.krakow.pl/start/3307,artykul,informacje_prawne.html" id="coPol"> type:node] score:8.2e-05 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://krakow.pl/build/fonts/LatoLatin-Semibold.b8c03b80.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:736 height:48 left:727 right:876 top:688 width:148] lhId:page-28-DIV nodeLabel:DOBRA path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV selector:div.forecast > div.forecast__air > div.forecast__air__content > div.forecast__air__state snippet:<div class="forecast__air__state"> type:node] score:5.9e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:736 height:48 left:737 right:785 top:688 width:48] lhId:page-41-IMG nodeLabel:Ikona pogody - dobra path:1,HTML,1,BODY,3,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,IMG selector:div.forecast__air__content > div.forecast__air__state > a.forecast__air__state > img#img_ave snippet:<img src="/build/img/pogoda_dobry.svg" class="forecast__air__state__icon" id="img_ave" alt="Ikona pogody - dobra"> type:node]]] type:subitems]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
krakow.pl/build/fonts/LatoLatin-Bold.b4fe4204.woff21.1 s
krakow.pl/build/fonts/LatoLatin-Black.88c59fed.woff2895 ms
krakow.pl/build/fonts/LatoLatin-Regular.f42ffe0a.woff2730 ms
krakow.pl/build/fonts/LatoLatin-Semibold.b8c03b80.woff2540 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:17.861 source:map[column:34915 line:2 type:source-location url:https://krakow.pl/build/6429.93794f19.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:80.712 source:map[type:text value:[unattributed]]] map[reflowTime:17.861 source:map[column:43118 line:1 type:source-location url:https://krakow.pl/build/6429.93794f19.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.

URLResource SizeEst Savings
Opłaca się w Krakowie div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
plikimpi.krakow.pl/pliki/605079.jpg364.2 KiB293.0 KiB
Jaki Plac św. Marii Magdaleny? div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
plikimpi.krakow.pl/pliki/622800.png319.7 KiB248.5 KiB
Kraków świętuje Dzień Ziemi! Zabawa, nauka i ekologia dla całej rodziny div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
plikimpi.krakow.pl/pliki/629319.jpg188.3 KiB117.1 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571707/9.png118.0 KiB109.5 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/572061/9.png110.3 KiB101.8 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/569922/9.png103.8 KiB95.3 KiB
Kraków.pl 2/2026 div.multimedia__bottom > div.multimedia__books > a > figure
plikimpi.krakow.pl/zalacznik/563145/9.png116.3 KiB95.1 KiB
Jak będziemy rozwijać pieczę zastępczą w Krakowie? div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
plikimpi.krakow.pl/pliki/636447.png142.1 KiB70.9 KiB
„Ławka dialogu” online 22 kwietnia div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
plikimpi.krakow.pl/pliki/636255.jpg136.2 KiB65.0 KiB
li.item > a.item__link > figure.item__video > img.video__image li.item > a.item__link > figure.item__video > img.video__image
plikimpi.krakow.pl/zalacznik/566199/2.jpg68.5 KiB64.9 KiB
div.multimedia__videos__main > a.main__video > figure.main__video__media > img.video__image div.multimedia__videos__main > a.main__video > figure.main__video__media > img.video__image
plikimpi.krakow.pl/zalacznik/571317/4.jpg75.5 KiB62.0 KiB
div.main__tile > a.main__tile__link > figure.main__tile__image > img div.main__tile > a.main__tile__link > figure.main__tile__image > img
plikimpi.krakow.pl/zalacznik/572337/3.jpg61.7 KiB44.2 KiB
li.aside__item > a.aside__item__link > figure > img li.aside__item > a.aside__item__link > figure > img
plikimpi.krakow.pl/pliki/636912/928.1 KiB24.9 KiB
a.slider-post > div.slider-post__image > figure.slider-post__image__source > img a.slider-post > div.slider-post__image > figure.slider-post__image__source > img
media.krakow.travel/photos/77165/l.jpg32.6 KiB24.7 KiB
Porozumienie krakowskich uczelni i UMK o współpracy na rzecz osób z niepełnospr… div.items__main > figure > a.aside__item__link > img
plikimpi.krakow.pl/pliki/639039/331.6 KiB16.3 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/570465/9.jpg24.9 KiB15.4 KiB
li.aside__item > a.aside__item__link > figure > img li.aside__item > a.aside__item__link > figure > img
plikimpi.krakow.pl/pliki/638562/918.6 KiB15.3 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571521/9.jpg23.1 KiB14.6 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571341/9.jpg22.9 KiB14.4 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571224/9.jpg20.7 KiB12.2 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/572121/frame_9_54471494.png20.6 KiB12.2 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571653/9.jpg18.8 KiB10.3 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571674/frame_9_4175151610.jpg18.8 KiB10.3 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/572415/9.jpg18.1 KiB9.6 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/571311/9.jpg17.8 KiB9.3 KiB
div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img div.tiles-container__list > a.medium__tile > figure.medium__tile__image > img
plikimpi.krakow.pl/zalacznik/572007/9.jpg17.5 KiB8.0 KiB
div.tiles-container > div.tiles-container__list > a.medium__tile > figure.medium__tile__image div.tiles-container > div.tiles-container__list > a.medium__tile > figure.medium__tile__image
plikimpi.krakow.pl/zalacznik/571956/9.jpg17.3 KiB6.6 KiB
li.item > a.item__link > figure.item__video > img.video__image li.item > a.item__link > figure.item__video > img.video__image
plikimpi.krakow.pl/zalacznik/361775/2.jpg9.2 KiB5.6 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:1365.713 label:Time to first byte subpart:timeToFirstByte] map[duration:11.829 label:Resource load delay subpart:resourceLoadDelay] map[duration:1193.616 label:Resource load duration subpart:resourceLoadDuration] map[duration:180.856 label:Element render delay subpart:elementRenderDelay]]
lhId: page-7-FIGURE
nodeLabel: Jak będziemy rozwijać pieczę zastępczą w Krakowie?
path: 1,HTML,1,BODY,3,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,FIGURE
selector: div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
snippet: <figure class="slider__item__image12" style="background-image: url(https://plikimpi.krakow.pl/pliki/636447.png)">

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-7-FIGURE
nodeLabel: Jak będziemy rozwijać pieczę zastępczą w Krakowie?
path: 1,HTML,1,BODY,3,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,FIGURE
selector: div.swiper-wrapper > div.swiper-slide > a.slider__item > figure.slider__item__image12
snippet: <figure class="slider__item__image12" style="background-image: url(https://plikimpi.krakow.pl/pliki/636447.png)">

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.

URLTransfer SizeDuration
krakow.pl/build/index.89901dc0.css28.7 KiB83 ms
krakow.pl/build/smog.73c6644d.css265 B

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

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: 0.0 ms 24.0 KiB
URLTransfer SizeEst Savings
krakow.pl/build/index.89901dc0.css28.5 KiB24.0 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 22.6 KiB
URLTransfer SizeEst Savings
krakow.pl/build/4692.8f03972d.js29.7 KiB22.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
plikimpi.krakow.pl/pliki/605079.jpg364.9 KiB
plikimpi.krakow.pl/pliki/622800.png320.3 KiB
plikimpi.krakow.pl/pliki/629319.jpg188.8 KiB
plikimpi.krakow.pl/pliki/636447.png142.5 KiB
plikimpi.krakow.pl/pliki/636255.jpg136.6 KiB
plikimpi.krakow.pl/zalacznik/571707/9.png118.3 KiB
plikimpi.krakow.pl/zalacznik/563145/9.png116.7 KiB
plikimpi.krakow.pl/zalacznik/572061/9.png110.7 KiB
plikimpi.krakow.pl/zalacznik/569922/9.png104.1 KiB
plikimpi.krakow.pl/zalacznik/571317/4.jpg75.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Ikona pogody - dobra div.forecast__air__content > div.forecast__air__state > a.forecast__air__state > img#img_ave
krakow.pl/build/img/pogoda_dobry.svg
BIP ul.social__list > li.social__list__item > a.social__list__link > img.social__list__link__image
krakow.pl/build/img/bip_logo.svg
div.section-slider > div.slider__footer > button.slider__button > img.slider__button__icon div.section-slider > div.slider__footer > button.slider__button > img.slider__button__icon
krakow.pl/build/img/pause_icon.svg
div.slider-posts__container > div.slider__footer > button.slider__button > img.slider__button__icon div.slider-posts__container > div.slider__footer > button.slider__button > img.slider__button__icon
krakow.pl/build/img/pause_icon.svg

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

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 907 ms
URLTime Spent
krakow.pl/1.0 s

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
WSTRZYMAJ 8.5oC 1020.1  hPa Źródło danych: IMGW-PIB środa, 22 kwietnia 2026 Le… body.swal2-shown > div.main
0.251
Ochrona prywatności użytkowników naszego serwisu ma dla nas bardzo duże znaczen… div.swal2-container > div.swal2-popup > div#swal2-html-container > p.cookies
0.002
średnia ze stacji Kraków-Kurdwanów Kraków, ul. Kamieńskiego Nowa Huta Kraków, u… div.forecast > div.forecast__air > div.forecast__air__content > form.forecast__air__form
0.000
Polityka prywatności div.swal2-popup > div#swal2-html-container > p.cookies > a#coPol
0.000
DOBRA div.forecast > div.forecast__air > div.forecast__air__content > div.forecast__air__state
0.000
●Time to Interactive 1.7 s
●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 50 ms
●Minify CSS
●Minify JavaScript
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.8 s
●Avoid long main-thread tasks 1 long task found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 160 ms
●Server Backend Latencies 400 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
96

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

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

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
Miejska Platforma Internetowa „Magiczny Kraków” Ochrona prywatności użytkownik… body.swal2-shown > div.swal2-container > div.swal2-popup

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.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●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
●The page contains a heading, skip link, or landmark region
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○`<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
○Heading elements appear in a sequentially-descending order
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Image elements have `[alt]` attributes
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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.
○Elements with visible text labels have matching accessible names.
○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
100

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.

○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`
○Image elements have `[alt]` attributes
○Document has a valid `rel=canonical`

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