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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.

56

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
video.poznan.pl/wp-content/uploads/2026/04/2026-04-09_wawrzyniaka-4.png0.0 ms2.7 MiB
video.poznan.pl/wp-content/uploads/2026/04/Diabel-i-dziewczyna.jpg0.0 ms1.6 MiB
video.poznan.pl/wp-content/uploads/2026/04/next-fest.jpg0.0 ms1.3 MiB
/mim/wspolne/layout/mim2024/dist/mim/css/mim_main.css?_ss...3600.0 s1.2 MiB
video.poznan.pl/wp-content/uploads/2026/04/2026-04-08_most_chrobrego-35.jpg0.0 ms518.7 KiB
video.poznan.pl/wp-content/uploads/2026/04/polmaraton.jpg0.0 ms514.8 KiB
video.poznan.pl/wp-content/uploads/2026/04/polmaraton.jpg0.0 ms514.8 KiB
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms447.3 KiB
/mim/main/pictures/na-zdjeciu-pomnik-starego-marycha,pic1...600.0 s444.1 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/afisz-background.png3600.0 s493.8 KiB
/mim/wspolne/.js/cdn/build/js/mim-cdn-bundle-min.js?_sst=...3600.0 s438.0 KiB
www.poznan.pl/mim/wspolne/layout/mim2014/assets/boxes/mapa.png3600.0 s422.0 KiB
/mim/main/pictures/-,pic1,1200,0,484594,with-dims,594,296...600.0 s290.5 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/main.js?_sst=17766210301353600.0 s278.3 KiB
nexus.devops.sages.pl/repository/raw-public/sages-chatbot-widget/1.4.4.js0.0 ms199.9 KiB
www.poznan.pl/mim/wspolne/.js/jquery/jquery-ui-1.13.2.custom/jquery-ui.min.js3600.0 s249.5 KiB
www.poznan.pl/mim/wspolne/main/podatki/6_poznan_568x236px.png?_sst=17766210301353600.0 s135.7 KiB
/mim/wspolne/main/podatki/6_poznan_1184x144px.png?_sst=17...3600.0 s118.3 KiB
www.poznan.pl/mim/wspolne/main/podatki/6_poznan_328x236px.png?_sst=17766210301353600.0 s102.5 KiB
/mim/main/pictures/zdjecie-ze-spektaklu-dwie-kobiety-na-s...600.0 s75.2 KiB
/mim/main/pictures/zdjecie-ze-spektaklu-dwie-kobiety-na-s...600.0 s75.2 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jqu...3600.0 s85.8 KiB
/mim/main/pictures/baner-promujacy-wydarzenie-nazwa-wydar...600.0 s74.1 KiB
/mim/main/pictures/zdjecie-przedstawia-dynamiczna-scene-z...600.0 s67.3 KiB
/mim/main/pictures/zdjecie-przedstawia-mezczyzne-siedzace...600.0 s66.5 KiB
/mim/wspolne/components_mim/dist/mim/css/components_mim.c...3600.0 s74.8 KiB
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms58.3 KiB
/mim/main/pictures/zdjecie-przedstawia-prezydenta-przypin...600.0 s62.2 KiB
/mim/leading/dzialania-finansowane-z-budzetu-panstwa-lub-...600.0 s60.0 KiB
/mim/main/pictures/zdjecie-przedstawia-nowoczesny-dwukond...600.0 s57.1 KiB
/mim/main/pictures/zdjecie-przedstawia-zblizenie-na-pojed...600.0 s55.9 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/cookies/exit.svg3600.0 s63.8 KiB
www.poznan.pl/mim/leading/przyjazne-deklaracje,5425.png?_sst=1776621030135600.0 s48.9 KiB
www.poznan.pl/mim/leading/rodzicielstwo-zastepcze,5997.png?_sst=1776621030135600.0 s38.8 KiB
www.poznan.pl/mim/leading/pomoc-po-sasiedzku,6045.jpg?_sst=1776621030135600.0 s37.1 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/slick.min....3600.0 s42.1 KiB
/mim/leading/aplikacja-smart-city-poznan,5254.png?_sst=17...600.0 s33.6 KiB
/mim/main/pictures/plakat-informacyjny-tresc-w-opisie,pic...600.0 s31.3 KiB
www.poznan.pl/mim/leading/nieodplatna-pomoc-prawna,6186.png?_sst=1776621030135600.0 s28.9 KiB
/mim/leading/badam-poznan,4677.png?_sst=1776621030135&uui...600.0 s20.3 KiB
/mim/wspolne/layout/mim2024/dist/mim/css/header.css?_sst=...3600.0 s23.0 KiB
/mim/main/pictures/logo-obiektu,pic1,1225,0,482008,with-d...600.0 s19.2 KiB
/mim/wspolne/.js/cdn/build/css/mim-cdn-stylesheet.css?_ss...3600.0 s20.2 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/modernizr-...3600.0 s19.3 KiB
ssl.google-analytics.com/ga.js7200.0 s17.4 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/lightbox/l...3600.0 s15.3 KiB
/mim/wspolne/layout/mim2024/dist/mim/css/ok_banner.css?_s...3600.0 s13.4 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jqu...3600.0 s13.4 KiB
www.poznan.pl/mim/leading/1000-lecie-zlotych-koron,6187.jpg?_sst=1776621030135600.0 s10.2 KiB
/mim/wspolne/components_mim/dist/mim/js/components_mim.js...3600.0 s11.1 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/events_main.js?_s...3600.0 s10.2 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/z_poznania.js?_ss...3600.0 s8.1 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/lazysizes....3600.0 s7.9 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jqu...3600.0 s7.8 KiB
/mim/leading/poznanski-budzet-obywatelski,6250.png?_sst=1...600.0 s6.4 KiB
/mim/wspolne/layout/mim2024/dist/mim/css/menu-mobile-new....3600.0 s7.2 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jqu...3600.0 s6.2 KiB
www.poznan.pl/mim/wspolne/.js/awstats_misc_tracker.js?_sst=17766210301353600.0 s4.8 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/biuletyn_logo.svg3600.0 s4.6 KiB
/mim/wspolne/.js/awstats_misc_tracker.js?_sst=17766210301...3600.0 s4.5 KiB
/mim/wspolne/layout/mim2024/dist/mim/css/partials/mim2024...3600.0 s4.3 KiB
/mim/wspolne/layout/mim2024/dist/mim/img/plan_image/bicyc...3600.0 s3.1 KiB
/mim/wspolne/layout/mim2024/dist/mim/img/home/sign-langua...3600.0 s3.0 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/news.js?_sst=17766210301353600.0 s2.9 KiB
/mim/wspolne/layout/mim2024/dist/mim/img/home/declaration...3600.0 s2.4 KiB
www.poznan.pl/mim/wspolne/wos/powietrze/level1c.svg?_sst=17766210301353600.0 s2.3 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/phone.svg3600.0 s2.0 KiB
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms1.6 KiB
www.poznan.pl/mim/wspolne/.images/ajax_indicator.gif3600.0 s2.0 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/ajax_indicator.gif3600.0 s2.0 KiB
/mim/wspolne/layout/mim2024/dist/mim/img/home/accessible-...3600.0 s2.0 KiB
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms1.6 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/plan_image/transport.svg3600.0 s1.8 KiB
/mim/wspolne/components_mim/dist/mim/img/chatbot_sages/ch...3600.0 s1.5 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/icon-bip-new.svg3600.0 s1.4 KiB
/mim/wspolne/layout/mim2024/dist/mim/img/home/contrast-ic...3600.0 s1.3 KiB
/mim/wspolne/components_mim/dist/mim/img/chatbot_sages/se...3600.0 s1.2 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/plan_image/tourism.svg3600.0 s1.1 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/plan_image/real_estate.svg3600.0 s1.0 KiB
/mim/wspolne/layout/mim2024/dist/mim/js/package/main/inde...3600.0 s932 B
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/css/fonts/slick.woff86400.0 s1.6 KiB
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/close_mobile.svg3600.0 s585 B
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/wideo/arrow-see-more.svg3600.0 s522 B
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/slider/arrow-left-icon.svg3600.0 s522 B
/mim/wspolne/components_mim/dist/mim/img/chatbot_sages/dr...3600.0 s487 B
/mim/wspolne/layout/mim2024/dist/mim/img/wideo/arrow-see-...3600.0 s481 B
/mim/wspolne/layout/mim2024/dist/mim/css/package/main/ind...3600.0 s412 B
/mim/wspolne/layout/mim2024/dist/mim/js/vendor/lightbox/p...3600.0 s377 B
www.poznan.pl/mim/wspolne/1x1.png?_sst=17766210301353600.0 s300 B
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms0 B
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms0 B
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms0 B
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms0 B
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.css0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms0 B
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.js0.0 ms0 B

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.

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:86.166 source:map[column:37926 line:2 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 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:20.641 source:map[column:85575 line:1 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 urlProvider:network]] map[reflowTime:0.297 source:map[column:51395 line:1 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 urlProvider:network]] map[reflowTime:91.712 source:map[column:49615 line:1 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 urlProvider:network]] map[reflowTime:6.063 source:map[column:52814 line:1 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 urlProvider:network]] map[reflowTime:6.931 source:map[column:49637 line:1 type:source-location url:https://www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/js/vendor/jquery/jquery-3.7.1.min.js?_sst=1776621030135 urlProvider:network]] map[reflowTime:0.761 source:map[type:text value:[unattributed]]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Film pokazuje prace budowlane na ulicy Wawrzyniaka, do tego wizualizację tego, … section#video-box-section-big > div.column > a#id_image_wideo_2 > img.lazyload
video.poznan.pl/wp-content/uploads/2026/04/2026-04-09_wawrzyniaka-4.png2.7 MiB2.7 MiB
Fragmenty spektaklu o tytule diabeł i dziewczyna, przeplatane wypowiedziami reż… section#video-box-section-big > div.column > a#id_image_wideo_4 > img.lazyload
video.poznan.pl/wp-content/uploads/2026/04/Diabel-i-dziewczyna.jpg1.6 MiB1.6 MiB
Relacja z festiwalu muzycznego Next Fest 2026. section#video-box-section-big > div.column > a#id_image_wideo_1 > img.lazyload
video.poznan.pl/wp-content/uploads/2026/04/next-fest.jpg1.3 MiB1.3 MiB
Film ukazuje prace nad rozbiórką mostu Chrobrego. section#video-box-section-big > div.column > a#id_image_wideo_3 > img.lazyload
video.poznan.pl/wp-content/uploads/2026/04/2026-04-08_most_chrobrego-35.jpg518.1 KiB513.6 KiB
1512 Wydarzeń 574 Seansów 281 Koncertów 0 Spektakli div#culture-with-afisz > section.box-afisz > div.box-container-afisz > div.afisz-top
www.poznan.pl/mim/wspolne/layout/mim2024/dist/mim/img/home/afisz-background.png493.3 KiB461.0 KiB
Na zdjęciu pomnik Starego Marycha article.main-news-container > a.news-link > div#img_news_1 > img.lazyloaded
/mim/main/pictures/na-zdjeciu-pomnik-starego-marycha,pic1...443.7 KiB415.6 KiB
Znajdź na mapie Poznania Szukaj Nazwa ulicy   Znajdź na planie System podpowiad… div.wrapper > section#important-with-plan > div.plan-map-box > div.box
www.poznan.pl/mim/wspolne/layout/mim2014/assets/boxes/mapa.png421.6 KiB387.8 KiB
. article.image-tile > a > div.kultura-main-image > img
/mim/main/pictures/-,pic1,1200,0,484594,with-dims,594,296...290.2 KiB261.5 KiB
Kliknij, żeby przejść na stronę www.okpoznan.pl. div.messages-container > div.ok_bnr_desktop > a > img
/mim/wspolne/main/podatki/6_poznan_1184x144px.png?_sst=17...118.0 KiB90.2 KiB
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
/mim/main/pictures/zdjecie-ze-spektaklu-dwie-kobiety-na-s...74.9 KiB69.4 KiB
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
/mim/main/pictures/zdjecie-ze-spektaklu-dwie-kobiety-na-s...74.9 KiB69.4 KiB
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
/mim/main/pictures/baner-promujacy-wydarzenie-nazwa-wydar...73.9 KiB68.4 KiB
Zdjęcie przedstawia dynamiczną scenę z targów Poznań Motor Show. Na pierwszym p… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-dynamiczna-scene-z...67.0 KiB62.8 KiB
Zdjęcie przedstawia mężczyznę siedzącego za stołem i rozmawiającego z dwójką ch… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-mezczyzne-siedzace...66.3 KiB62.1 KiB
Zdjęcie przedstawia prezydenta przypinającego medal kobiecie. Obok widać flagę … article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-prezydenta-przypin...62.0 KiB57.8 KiB
Zdjęcie przedstawia nowoczesny, dwukondygnacyjny budynek o białej elewacji, w k… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-nowoczesny-dwukond...56.9 KiB52.7 KiB
Zdjęcie przedstawia zbliżenie na pojedynczy, rozwinięty słonecznik leżący na bi… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-zblizenie-na-pojed...55.7 KiB51.5 KiB
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
/mim/main/pictures/plakat-informacyjny-tresc-w-opisie,pic...31.1 KiB25.6 KiB
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
/mim/main/pictures/logo-obiektu,pic1,1225,0,482008,with-d...19.0 KiB13.5 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-5-IMG
nodeLabel: Na zdjęciu pomnik Starego Marycha
path: 5,HTML,2,BODY,15,SECTION,2,DIV,0,DIV,0,DIV,0,SECTION,2,DIV,0,DIV,0,ARTICLE,1,A,0,DIV,0,IMG
selector: article.main-news-container > a.news-link > div#img_news_1 > img.lazyloaded
snippet: <img class=" lazyloaded" src="/mim/main/pictures/na-zdjeciu-pomnik-starego-marycha,pic1,1016,0,484582,wi…" data-src="/mim/main/pictures/na-zdjeciu-pomnik-starego-marycha,pic1,1016,0,484582,wi…" alt="Na zdjęciu pomnik Starego Marycha">

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
video.poznan.pl/wp-content/uploads/2026/04/polmaraton.jpghttp/1.1
video.poznan.pl/wp-content/uploads/2026/04/next-fest.jpghttp/1.1
video.poznan.pl/wp-content/uploads/2026/04/2026-04-09_wawrzyniaka-4.pnghttp/1.1
video.poznan.pl/wp-content/uploads/2026/04/2026-04-08_most_chrobrego-35.jpghttp/1.1
video.poznan.pl/wp-content/uploads/2026/04/Diabel-i-dziewczyna.jpghttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1698&autoplay=falsehttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1697&autoplay=falsehttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1691&autoplay=falsehttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1690&autoplay=falsehttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1688&autoplay=falsehttp/1.1
video.poznan.pl/player/build_poznanpl/index.html?id=1686&autoplay=falsehttp/1.1
/player/build_poznanpl/lib/kaltura-player-js/kaltura-ovp-...http/1.1
video.poznan.pl/player/build_poznanpl/static/css/main.5f441376.chunk.csshttp/1.1
video.poznan.pl/player/build_poznanpl/static/js/2.eb94845b.chunk.jshttp/1.1
video.poznan.pl/player/build_poznanpl/static/js/main.146d029e.chunk.jshttp/1.1
/player/build/db/index.php?video_id=1697&autoplay=false&m...http/1.1
/player/build/db/index.php?video_id=1688&autoplay=false&m...http/1.1
/player/build/db/index.php?video_id=1698&autoplay=false&m...http/1.1
/player/build/db/index.php?video_id=1690&autoplay=false&m...http/1.1
/player/build/db/index.php?video_id=1686&autoplay=false&m...http/1.1
/player/build/db/index.php?video_id=1691&autoplay=false&m...http/1.1

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: 345 ms
URLTime Spent
poznan.pl/345 ms
www.poznan.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

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.

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.

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
. article.image-tile > a > div.kultura-main-image > img
/mim/main/pictures/-,pic1,1200,0,484594,with-dims,594,296...
Na zdjęciu pomnik Starego Marycha article.main-news-container > a.news-link > div#img_news_1 > img.lazyloaded
/mim/main/pictures/na-zdjeciu-pomnik-starego-marycha,pic1...
Zdjęcie przedstawia dynamiczną scenę z targów Poznań Motor Show. Na pierwszym p… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-dynamiczna-scene-z...
Zdjęcie przedstawia prezydenta przypinającego medal kobiecie. Obok widać flagę … article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-prezydenta-przypin...
Zdjęcie przedstawia zbliżenie na pojedynczy, rozwinięty słonecznik leżący na bi… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-zblizenie-na-pojed...
Zdjęcie przedstawia nowoczesny, dwukondygnacyjny budynek o białej elewacji, w k… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-nowoczesny-dwukond...
Zdjęcie przedstawia mężczyznę siedzącego za stołem i rozmawiającego z dwójką ch… article > a.news-link > div#img_news_side_1 > img.lazyloaded
/mim/main/pictures/zdjecie-przedstawia-mezczyzne-siedzace...
Jakość powietrza bardzo dobra. div.info-right > span.box-air-quality > div > img
www.poznan.pl/mim/wspolne/wos/powietrze/level1c.svg?_sst=1776621030135

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
Optimize DOM size
LCP breakdown
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 7 user timings
JavaScript execution time 0.4 s
Minimizes main-thread work 1.5 s
Avoid long main-thread tasks 2 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 50 ms
Server Backend Latencies 180 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 340 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
84

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.

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
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
div#chatbot-widget-root > div.container > button.chatbot__avatar-positioner > img.chatbot__avatar-image div#chatbot-widget-root > div.container > button.chatbot__avatar-positioner > img.chatbot__avatar-image

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
section.box > div#wideo_0 > div.box-youtube-iframe-wrapper > iframe.lazyload section.box > div#wideo_0 > div.box-youtube-iframe-wrapper > iframe.lazyload

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 > div.main-header-row1 > span.ue_desktop > a.icon nav > div.main-header-row1 > span.ue_desktop > a.icon
div.wrapper > div.footer-container-block-01 > p.poznan_logo_wrapper > a.poznan_logo div.wrapper > div.footer-container-block-01 > p.poznan_logo_wrapper > a.poznan_logo

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.

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
Informacja o przetwarzaniu danych div#cookie-box-fixed > div#cookies-top-text > div#text_1 > h4
Znajdź na mapie Poznania div.box-container > div.column-container-plan > div.column > h4#id_ulica_city_header

These are opportunities to improve keyboard navigation in your application.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
61 646 33 44 article.new_links_box > div.flex_column > div > a.link_dark_theme

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Trzecia urodzinowa sobota w CIR Jak się blubra po poznańsku? Czy da się namalo… div.all-news-container > div.side-news-container > article.main-news-container > a.news-link
Gratka dla fanów motoryzacji Od 23 do 26 kwietnia na terenie Międzynarodowych … div.side-news-container > div.side-news-container > article > a.news-link
Jubileusze par małżeńskich Ponad 40 par odebrało w urzędzie miasta Medale za D… div.side-news-container > div.side-news-container > article > a.news-link
Rusza nabór do miejskiego programu stypendialnego Po raz dziewiętnasty Miasto … div.side-news-container > div.side-news-container > article > a.news-link
Dzień Ziemi w Arsenale 21 i 22 kwietnia w Galerii Miejskiej Arsenał odbywają s… div.side-news-container > div.side-news-container > article > a.news-link
Prezydent Poznania spotkał się z mieszkańcami Woli Jacek Jaśkowiak, prezydent … div.side-news-container > div.side-news-container > article > a.news-link
Filmy, których nie było - piosenki, które zostają Michał od Kości - a dokładni… div.box-container-kultura-main > div > article.image-tile > a
21.04.2026 Wariacje na ptaki i inne instrumenty div.box-kultura-content > div.column-kultura-news > article.dotdotdot > a.kultura-main-news
21.04.2026 Kim jest Król Roger? div.box-kultura-content > div.column-kultura-news > article.dotdotdot > a.kultura-main-news
21.04.2026 Konkurs na Wydarzenie Muzyczne dla Dzieci div.box-kultura-content > div.column-kultura-news > article.dotdotdot > a.kultura-main-news
20.04.2026 NEXT FEST. Między gigami div.box-kultura-content > div.column-kultura-news > article.dotdotdot > a.kultura-main-news
21.04.2026 Konsultacje w sprawie nocnej sprzedaży alkoholu div.box_new_container > div.biuletyn-with-button > article.flex_column > a.builetyn_article
14.04.2026 XXXIII sesja Rady Miasta Poznania div.box_new_container > div.biuletyn-with-button > article.flex_column > a.builetyn_article
16.04.2026 Miliony dla Teatru Polskiego div.box_new_container > div.biuletyn-with-button > article.flex_column > a.builetyn_article
17.04.2026 Kontynuacja oceny realizacji budżetu div.box_new_container > div.biuletyn-with-button > article.flex_column > a.builetyn_article
Zobacz więcej ogłoszeń div.bip_main_page_container > div.row-1-1-new > section.box_new_container > a.button-navi-new
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
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.
Select elements have associated label elements.
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.
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
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
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 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
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
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
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
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.
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
85

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.

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
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_0 > a.close-submenu
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_1 > a.close-submenu
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_2 > a.close-submenu
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_3 > a.close-submenu
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_4 > a.close-submenu
Cofnij menu div.mobile-menu-container > div#menu-mobile-section > button#button_mobile_menu_5 > a.close-submenu
Cofnij menu div#submenu_mobile_head_0 > div#submenu_mobile_button_0 > div.submenu_mobile_text_box > a.close-submenu
Cofnij menu div#submenu_mobile_head_1 > div#submenu_mobile_button_1 > div.submenu_mobile_text_box > a.close-submenu
Cofnij menu div#submenu_mobile_head_2 > div#submenu_mobile_button_2 > div.submenu_mobile_text_box > a.close-submenu
Cofnij menu div#submenu_mobile_head_3 > div#submenu_mobile_button_3 > div.submenu_mobile_text_box > a.close-submenu
Cofnij menu div#submenu_mobile_head_4 > div#submenu_mobile_button_4 > div.submenu_mobile_text_box > a.close-submenu
Cofnij menu div#submenu_mobile_head_5 > div#submenu_mobile_button_5 > div.submenu_mobile_text_box > a.close-submenu
Pogoda section.bar > div.wrapper > div.date-weather-box > a.weather_info_menu_button
18. PKO Poznań Półmaraton div.column > div.video-box-textbox > div#id_title_wideo_0 > a.a_hover
Zobacz wideo div.video-box-textbox > div.video-box-btm > div.box-see-video-new > a.see-video-new
Next Fest 2026 div.column > div.video-box-textbox > div#id_title_wideo_1 > a.a_hover
Zobacz wideo div.video-box-textbox > div.video-box-btm > div.box-see-video-new > a.see-video-new
Postępują prace na jeżyckiej ulicy div.column > div.video-box-textbox > div#id_title_wideo_2 > a.a_hover
Zobacz wideo div.video-box-textbox > div.video-box-btm > div.box-see-video-new > a.see-video-new
Wyłączenie z ruchu ul. Wieżowej i rozbiórka mostu div.column > div.video-box-textbox > div#id_title_wideo_3 > a.a_hover
Zobacz wideo div.video-box-textbox > div.video-box-btm > div.box-see-video-new > a.see-video-new
“Diabeł i dziewczyna” w Teatrze Nowym div.column > div.video-box-textbox > div#id_title_wideo_4 > a.a_hover
Zobacz wideo div.video-box-textbox > div.video-box-btm > div.box-see-video-new > a.see-video-new
div.lb-outerContainer > div.lb-container > div.lb-loader > a.lb-cancel div.lb-outerContainer > div.lb-container > div.lb-loader > a.lb-cancel
div.lb-dataContainer > div.lb-data > div.lb-closeContainer > a.lb-close div.lb-dataContainer > div.lb-data > div.lb-closeContainer > a.lb-close
Zmień ustawienia cookies div.footer_header-block > ul.footer_links > li#change-cookies-label > a
Do góry body.herbLogoBody > div#icon-up > a.icon-up-new

To appear in search results, crawlers need access to your app.

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
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
a.event_link > div.event-link-img > div.image-events-main > img a.event_link > div.event-link-img > div.image-events-main > img
div#chatbot-widget-root > div.container > button.chatbot__avatar-positioner > img.chatbot__avatar-image div#chatbot-widget-root > div.container > button.chatbot__avatar-positioner > img.chatbot__avatar-image

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
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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