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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

27

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
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js10800.0 s272.7 KiB
1gr.cz/data/alza/965f925a-981d-4cf6-8cb0-b0f33700af71.jpg3600.0 s74.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js86400.0 s132.0 KiB
h.seznam.cz/js/dot-small.js3600.0 s62.1 KiB
aa.1gr.cz/mafra/4513/300x250px_Skle_s_CTA.jpg60.0 s45.4 KiB
/9a8e2159-3781-4da1-9590-fbf86806f86e/loader.js?target_ty...7200.0 s54.8 KiB
aa.1gr.cz/mafra/2617/ad-banner-300x600-480x300.jpg60.0 s41.3 KiB
d49-a.sdn.cz/d_49/c_img_p9_A/nPVpfd5QLLDqzReJbEF7bFAG/8428.jpeg89025.0 s96.0 KiB
ssp.seznam.cz/static/js/ssp.js3600.0 s45.4 KiB
aa.1gr.cz/mafra/249/Pustevny2.jpg60.0 s15.9 KiB
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js3600.0 s15.4 KiB
cdn.cpex.cz/package/cpex-package.min.js86400.0 s30.2 KiB
spir.hit.gemius.pl/xgemius.js43200.0 s19.4 KiB
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg604800.0 s83.0 KiB
s1.adform.net/Banners/34896265/34896265.jpg?bv=1604800.0 s82.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg604800.0 s80.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpg604800.0 s74.1 KiB
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg604800.0 s67.6 KiB
/mysidia/9475976b3d2af33fba37207c76515039.js?tag=addon/my...86400.0 s16.8 KiB
1gr.cz/js/uni/paticka.js?rr=1776765780604800.0 s59.9 KiB
static.criteo.net/js/ld/publishertag.ids.js86400.0 s14.8 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg604800.0 s56.7 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg604800.0 s41.3 KiB
/mysidia/d6b7775af140386df9644679ecc3cc4d.js?tag=pingback...86400.0 s9.2 KiB
ssp.seznam.cz/static/img/advert.svg3600.0 s4.4 KiB
1gr.cz/m/css/layout.css?rr=1776688298604800.0 s34.4 KiB
1gr.cz/data/uni/touchmenu.js?rr=0463600.0 s4.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg604800.0 s33.7 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195604800.0 s30.6 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpg3600.0 s3.7 KiB
invstatic101.creativecdn.com/encrypted-signals/encrypted-tag-g.js0.0 ms2.9 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpg3600.0 s3.5 KiB
1gr.cz/js/uni/uni.js?rr=1774003235604800.0 s26.1 KiB
/mysidia/36911556a544bc231f894d5d9da4f6bd.js?tag=scream/c...86400.0 s4.8 KiB
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg604800.0 s19.1 KiB
1gr.cz/fotky/idnes/26/023/w230/LYO8ed99a2840_04_Chalupa_NP.JPG604800.0 s18.7 KiB
1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg604800.0 s18.0 KiB
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg604800.0 s17.9 KiB
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpg604800.0 s16.7 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpg604800.0 s16.6 KiB
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg604800.0 s14.6 KiB
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG604800.0 s14.0 KiB
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg604800.0 s13.9 KiB
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpg604800.0 s13.8 KiB
1gr.cz/fotky/idnes/21/103/w230/MBB8f0257_vlasak.jpg604800.0 s13.4 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpg604800.0 s13.2 KiB
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpg604800.0 s12.7 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpg604800.0 s12.6 KiB
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg604800.0 s12.3 KiB
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpg604800.0 s12.3 KiB
cdn.cpex.cz/settings/production/mafra/idnes.cz.js86400.0 s3.0 KiB
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpg604800.0 s11.8 KiB
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg604800.0 s11.7 KiB
1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpg604800.0 s11.5 KiB
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg604800.0 s11.4 KiB
1gr.cz/fotky/idnes/23/042/w230/SRP9ac2f0_Clipboard02.jpg604800.0 s10.9 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43069_104035290.jpg604800.0 s10.7 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg604800.0 s10.5 KiB
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg604800.0 s10.4 KiB
cdn.cpex.cz/settings/production/mafra.js86400.0 s2.5 KiB
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg604800.0 s10.1 KiB
1gr.cz/m/js/touch.js?rr=1763630729604800.0 s9.8 KiB
1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpg604800.0 s9.5 KiB
/pagead/js/r20260420/r20110914/elements/html/interstitial...1209600.0 s9.4 KiB
/pagead/js/r20260420/r20110914/client/qs_click_protection...1209600.0 s8.5 KiB
pagead2.googlesyndication.com/pagead/js/r20260420/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
ssp.seznam.cz/static/img/paw-2.svg3600.0 s1021 B
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg604800.0 s7.9 KiB
/mysidia/33def007df2ca53167473814f8dc82ef.js?tag=addon/an...86400.0 s1.9 KiB
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpg604800.0 s6.8 KiB
/pagead/js/r20260420/r20110914/elements/html/fullscreen_a...1209600.0 s6.7 KiB
1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpg604800.0 s6.5 KiB
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321604800.0 s6.2 KiB
1gr.cz/fotky/blogy/24/06/37637/midi/Bf833277.jpeg604800.0 s6.0 KiB
/mysidia/eb506c874c4df599e8b527ba6b052c54.js?tag=engine/c...86400.0 s1.4 KiB
1gr.cz/fotky/blogy/25/11/60415/midi/Bf871305.jpeg604800.0 s4.9 KiB
1gr.cz/o/televize/loga-m/nova.png604800.0 s4.9 KiB
1gr.cz/fotky/blogy/25/04/60198/midi/Bf854727.jpeg604800.0 s4.7 KiB
delivery.r2b2.cz/static/mafra/idnes-toggleSticky.js0.0 ms474 B
1gr.cz/css/idn4/uni.css?rr=1775735653604800.0 s3.9 KiB
1gr.cz/o/pocasi/iw/iw-p.svg604800.0 s3.6 KiB
1gr.cz/css/idn4/base.css?rr=1775574083604800.0 s3.1 KiB
1gr.cz/css/idn4/base.css?v=18604800.0 s3.1 KiB
1gr.cz/u/idn4/obrazek-neni-k-dispozici.png604800.0 s3.1 KiB
1gr.cz/js/sph/2025.js?rr=1775651079604800.0 s3.0 KiB
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...0.0 ms261 B
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...0.0 ms260 B
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...0.0 ms260 B
/api/hit.gif?campaignId=czb3da27e513284a&ctok=1621d606237...0.0 ms259 B
1gr.cz/u/loga-n4/ticketportal-plg.svg604800.0 s2.1 KiB
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587604800.0 s2.1 KiB
1gr.cz/u/loga-n4/idnes.svg604800.0 s2.0 KiB
1gr.cz/o/televize/loga-m/prima.png604800.0 s2.0 KiB
1gr.cz/o/televize/loga-m/ct-1.png604800.0 s2.0 KiB
1gr.cz/u/idn4/reklama-bg-min.svg604800.0 s1.6 KiB
1gr.cz/o/televize/loga-m/ct-2.png604800.0 s1.4 KiB
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109604800.0 s1.3 KiB
1gr.cz/js/cmp/cookiewallCMP.js604800.0 s1.3 KiB
/pagead/js/r20260420/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
1gr.cz/m/css/reklama.css?rr=1761304483604800.0 s1.1 KiB
1gr.cz/u/icon/000/social-tiktok.svg604800.0 s1.1 KiB
/pagead/js/r20260420/r20110914/elements/html/ad_exit_moni...1209600.0 s1.1 KiB
1gr.cz/m/js/sph.js?rr=01604800.0 s1.1 KiB
1gr.cz/u/icon/000/login0.svg604800.0 s1018 B
1gr.cz/u/icon/000/social-instagram.svg604800.0 s1006 B
1gr.cz/u/icon/000/social-telegram.svg604800.0 s1003 B
1gr.cz/u/icon/000/rss.svg604800.0 s965 B
1gr.cz/u/icon/000/discusion.svg604800.0 s910 B
1gr.cz/u/icon/000/menu.svg604800.0 s878 B
/pagead/js/r20260420/r20110914/client/load_preloaded_reso...1209600.0 s840 B
1gr.cz/u/icon/000/mail2.svg604800.0 s768 B
1gr.cz/u/icon/000/social-twitter.svg604800.0 s743 B
1gr.cz/u/icon/000/arrow-down.svg604800.0 s742 B
1gr.cz/u/icon/000/social-facebook.svg604800.0 s724 B
1gr.cz/u/icon/000/more.svg604800.0 s705 B
1gr.cz/u/icon/000/desktop.svg604800.0 s692 B
1gr.cz/u/icon/000/arrow2-right.svg604800.0 s667 B
1gr.cz/u/icon/000/setting.svg604800.0 s650 B
1gr.cz/u/free.gif#135x75604800.0 s323 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.

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:0.108 source:map[column:267 line:3504 type:source-location url:https://www.idnes.cz/ 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:39.025 source:map[column:24 line:7 type:source-location url:https://1gr.cz/js/sph/2025.js?rr=1775651079 urlProvider:network]] map[reflowTime:12.926 source:map[column:108808 line:126 type:source-location url:https://1gr.cz/js/uni/paticka.js?rr=1776765780 urlProvider:network]] map[reflowTime:0.594 source:map[column:1816 line:126 type:source-location url:https://1gr.cz/js/uni/paticka.js?rr=1776765780 urlProvider:network]] map[reflowTime:33.79 source:map[type:text value:[unattributed]]] map[reflowTime:0.108 source:map[column:285 line:3503 type:source-location url:https://www.idnes.cz/ 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
div > div > a > img div > div > a > img
d49-a.sdn.cz/d_49/c_img_p9_A/nPVpfd5QLLDqzReJbEF7bFAG/8428.jpeg95.5 KiB80.8 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg82.7 KiB80.5 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg79.9 KiB77.8 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpg73.8 KiB71.6 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg67.4 KiB65.2 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg56.5 KiB54.3 KiB
li > a.video-art > div.art-img > img li > a.video-art > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg41.0 KiB38.8 KiB
div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img
aa.1gr.cz/mafra/4513/300x250px_Skle_s_CTA.jpg45.0 KiB32.8 KiB
ilustrační snímek div.art > a#assembly-art-0 > div.art-img > img
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg33.4 KiB21.2 KiB
Sedm stovek schodů, které máte v tropickém vedru vyšlapat kamsi vzhůru? To moc.… div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg18.8 KiB17.1 KiB
Chalupa stojí na okraji vesnice a svou polohou nabízí soukromí a spoustu zeleně… div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/023/w230/LYO8ed99a2840_04_Chalupa_NP.JPG18.4 KiB16.8 KiB
I ropní šejkové přísně vyznávající abstinenci, přepočítávají své černé zlato na… div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg17.7 KiB16.0 KiB
Oblíbený festival Hrady CZ se koná i na loukách v podhradí zámku v Hradci nad... div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg17.6 KiB16.0 KiB
Česká televize, atelier Flera, Ferdinand Leffler, Tři v zahradě 2026, 4. díl,... div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpg16.4 KiB14.7 KiB
Andrej Babiš navrhuje následující velvyslance: Hynek Kmoníček by měl zastupovat… div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpg16.3 KiB14.6 KiB
div.art > a.art-link > div.art-img > img.art-img div.art > a.art-link > div.art-img > img.art-img
aa.1gr.cz/mafra/249/Pustevny2.jpg15.5 KiB13.8 KiB
div.art > a.art-link > div.art-img > img.art-img div.art > a.art-link > div.art-img > img.art-img
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg14.3 KiB12.6 KiB
Sara Sandeva, Daniel Makovec div.art > a.art-link > div.art-img > img
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG13.7 KiB12.1 KiB
Z filmu K-pop: Lovkyně démonů div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg13.6 KiB11.9 KiB
Maskovaný prototyp elektomobilu Škoda Epiq při testech na sněhu. div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpg12.4 KiB10.8 KiB
Přehlídková mola už nepatří jen velmi mladým modelkám. Týdny módy pro sezonu... div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg12.1 KiB10.4 KiB
Americký torpédoborec s řízenými střelami a hlídkové plavidlo indického... div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpg11.5 KiB9.8 KiB
ilustrační snímek div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg11.5 KiB9.8 KiB
Monika Timková div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpg11.2 KiB9.6 KiB
Světový šampion Fred Kerley ovládl sprint na sto metrů na Diamantové lize v... div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg11.1 KiB9.4 KiB
Hráč CS:GO Sp1cay, kterému se podařil neopakovatelný zásah. div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/23/042/w230/SRP9ac2f0_Clipboard02.jpg10.6 KiB8.9 KiB
Veronika Žilková div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg10.2 KiB8.5 KiB
Vivo X300 Ultra a jeho bohaté příslušenství div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg10.2 KiB8.5 KiB
Zásah policie v Šestajovicích. (21. dubna 2026) div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg9.8 KiB8.1 KiB
ilustrační snímek div.art > a.art-link > div.art-img > img
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg7.6 KiB6.0 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-30-DIV
nodeLabel: Premium
path: 1,HTML,2,BODY,15,DIV,0,DIV,0,DIV,2,DIV,0,A,1,DIV
selector: div#top > div.art > a#assembly-art-0 > div.art-img
snippet: <div class="art-img">

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
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpghttp/1.1
1gr.cz/fonts/Inter/inter-regular.woff2http/1.1
1gr.cz/fonts/Fira/firasans-semibold.woff2http/1.1
1gr.cz/css/idn4/base.css?rr=1775574083http/1.1
1gr.cz/css/idn4/uni.css?rr=1775735653http/1.1
1gr.cz/m/css/reklama.css?rr=1761304483http/1.1
1gr.cz/m/css/layout.css?rr=1776688298http/1.1
1gr.cz/css/idn4/layout2.css?rr=1776689195http/1.1
1gr.cz/js/uni/uni.js?rr=1774003235http/1.1
1gr.cz/m/js/touch.js?rr=1763630729http/1.1
1gr.cz/js/cmp/cookiewallCMP.jshttp/1.1
1gr.cz/u/loga-n4/idnes.svghttp/1.1
1gr.cz/o/pocasi/iw/iw-p.svghttp/1.1
1gr.cz/u/free.gif#135x75http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43069_104035290.jpghttp/1.1
1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpghttp/1.1
1gr.cz/m/js/sph.js?rr=01http/1.1
1gr.cz/data/uni/touchmenu.js?rr=046http/1.1
1gr.cz/js/uni/paticka.js?rr=1776765780http/1.1
1gr.cz/js/sph/2025.js?rr=1775651079http/1.1
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109http/1.1
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587http/1.1
1gr.cz/css/idn4/base.css?v=18http/1.1
/log/page.aspx?d=T&c=F&a=F&v=B&u=idnes&url=https%3A%2F%2F...http/1.1
1gr.cz/u/icon/000/login0.svghttp/1.1
1gr.cz/u/icon/000/menu.svghttp/1.1
1gr.cz/fonts/Fira/firasans-semibold.woff2?20210115http/1.1
/log/redir.aspx?log=hax&r=sphtouch_partner_zobrazeni_x1&f...http/1.1
1gr.cz/u/icon/000/arrow2-right.svghttp/1.1
1gr.cz/u/idn4/obrazek-neni-k-dispozici.pnghttp/1.1
1gr.cz/u/idn4/reklama-bg-min.svghttp/1.1
1gr.cz/u/loga-n4/ticketportal-plg.svghttp/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpghttp/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpghttp/1.1
1gr.cz/u/icon/000/setting.svghttp/1.1
1gr.cz/u/icon/000/more.svghttp/1.1
1gr.cz/o/televize/loga-m/ct-1.pnghttp/1.1
1gr.cz/o/televize/loga-m/nova.pnghttp/1.1
1gr.cz/o/televize/loga-m/prima.pnghttp/1.1
1gr.cz/o/televize/loga-m/ct-2.pnghttp/1.1
1gr.cz/fotky/blogy/25/04/60198/midi/Bf854727.jpeghttp/1.1
1gr.cz/fotky/blogy/24/06/37637/midi/Bf833277.jpeghttp/1.1
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpghttp/1.1
1gr.cz/fotky/blogy/25/11/60415/midi/Bf871305.jpeghttp/1.1
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpghttp/1.1
1gr.cz/fotky/idnes/21/103/w230/MBB8f0257_vlasak.jpghttp/1.1
1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpghttp/1.1
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpghttp/1.1
1gr.cz/u/icon/000/discusion.svghttp/1.1
1gr.cz/u/icon/000/desktop.svghttp/1.1
1gr.cz/u/icon/000/mail2.svghttp/1.1
1gr.cz/u/icon/000/rss.svghttp/1.1
1gr.cz/u/icon/000/social-facebook.svghttp/1.1
1gr.cz/u/icon/000/social-twitter.svghttp/1.1
1gr.cz/u/icon/000/social-instagram.svghttp/1.1
1gr.cz/u/icon/000/social-tiktok.svghttp/1.1
1gr.cz/u/icon/000/social-telegram.svghttp/1.1
1gr.cz/fonts/Inter/inter-semibold.woff2http/1.1
1gr.cz/fonts/Inter/inter-extrabold.woff2http/1.1
1gr.cz/log/scorepv.aspx?page=sph-TFB&multiple=1http/1.1
/log/redir.aspx?log=hax&r=sphtouch_sasraw_x1&from=https%3...http/1.1
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpghttp/1.1
1gr.cz/u/icon/000/arrow-down.svghttp/1.1
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpghttp/1.1
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpghttp/1.1
1gr.cz/fotky/idnes/26/023/w230/LYO8ed99a2840_04_Chalupa_NP.JPGhttp/1.1
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpghttp/1.1
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpghttp/1.1
1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpghttp/1.1
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpghttp/1.1
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpghttp/1.1
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpghttp/1.1
1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpghttp/1.1
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPGhttp/1.1
1gr.cz/fotky/idnes/23/042/w230/SRP9ac2f0_Clipboard02.jpghttp/1.1
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpghttp/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpghttp/1.1
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321http/1.1
1gr.cz/data/nocache/alza/2019/HK_Alza_Dny_Duben_AMB569_768x1230_HP_M.jshttp/1.1
1gr.cz/data/alza/965f925a-981d-4cf6-8cb0-b0f33700af71.jpghttp/1.1
/log/redir.aspx?log=hax&r=testtouch_share_false&from=rubr...http/1.1
1gr.cz/u/favicon/idnes.icohttp/1.1
/log/redir.aspx?log=hax&r=gemiuspokus1x100_ok&from=sph&ur...http/1.1

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
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.

URLTransfer SizeDuration
1gr.cz/js/uni/uni.js?rr=177400323526.1 KiB1.6 s
1gr.cz/m/js/touch.js?rr=17636307299.8 KiB1.2 s
1gr.cz/css/idn4/layout2.css?rr=177668919530.6 KiB1.8 s
1gr.cz/m/css/layout.css?rr=177668829834.4 KiB2.0 s
1gr.cz/css/idn4/uni.css?rr=17757356533.9 KiB852 ms
1gr.cz/m/css/reklama.css?rr=17613044831.1 KiB852 ms
1gr.cz/css/idn4/base.css?rr=17755740833.1 KiB852 ms
1gr.cz/css/idn4/base.css?v=183.1 KiB185 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 858 ms
URLTime Spent
idnes.cz/858 ms
www.idnes.cz/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 400 ms 75.0 KiB
URLTransfer SizeEst Savings
1gr.cz/m/css/layout.css?rr=177668829834.1 KiB32.0 KiB
1gr.cz/css/idn4/layout2.css?rr=177668919530.2 KiB27.3 KiB
17.2 KiB15.6 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: 3.3 s 1.4 MiB
URLTransfer SizeEst Savings
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js272.4 KiB203.1 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile268.4 KiB162.5 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...179.5 KiB115.0 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB108.9 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB108.7 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB108.4 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB91.8 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...142.0 KiB78.9 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js146.8 KiB77.8 KiB
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1161.0 KiB67.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WD22KH132.9 KiB56.9 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js131.6 KiB49.5 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....101.1 KiB44.5 KiB
1gr.cz/js/uni/paticka.js?rr=177676578059.6 KiB30.9 KiB
h.seznam.cz/js/dot-small.js61.8 KiB28.1 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...53.4 KiB23.2 KiB
cdn.cpex.cz/package/cpex-package.min.js29.8 KiB21.4 KiB
ssp.seznam.cz/static/js/ssp.js45.0 KiB21.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
Unattributable1.8 s359 ms0.0 ms
www.idnes.cz/1.3 s175 ms12 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js1.2 s905 ms215 ms
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...927 ms684 ms15 ms
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile851 ms510 ms116 ms
cdn.cpex.cz/hb/prebid/prebid.min.js661 ms581 ms30 ms
/videoPlayer/caroda.min.js?ctok=1621d6062379002b66476db7&...558 ms94 ms453 ms
1gr.cz/js/uni/paticka.js?rr=1776765780511 ms305 ms32 ms
imasdk.googleapis.com/js/sdkloader/ima3.js474 ms321 ms33 ms
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js427 ms320 ms58 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....307 ms253 ms34 ms
www.googletagmanager.com/gtm.js?id=GTM-WD22KH229 ms187 ms40 ms
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js225 ms141 ms62 ms
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...225 ms178 ms45 ms
ssp.seznam.cz/static/js/ssp.js215 ms180 ms19 ms
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1205 ms164 ms39 ms
securepubads.g.doubleclick.net/tag/js/gpt.js188 ms147 ms38 ms
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321183 ms170 ms5.3 ms
1gr.cz/js/sph/2025.js?rr=1775651079164 ms4.3 ms1.6 ms
h.seznam.cz/js/dot-small.js161 ms140 ms12 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...157 ms101 ms21 ms
/get/homepage.idnes.cz/generic/300x250_paticka/mobile?pbi...150 ms118 ms3.3 ms
delivery.r2b2.cz/get/homepage.idnes.cz/generic/fixed/mobile?pbid=m_sticky107 ms78 ms16 ms
ep2.adtrafficquality.google/sodar/sodar2.js102 ms87 ms10 ms
/get/homepage.idnes.cz/rtb-premium/300x250_paticka/mobile...85 ms68 ms2.1 ms
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js78 ms73 ms3.4 ms
1gr.cz/js/cmp/cookiewallCMP.js75 ms45 ms6.1 ms
pagead2.googlesyndication.com/tag/js/gpt.js67 ms57 ms9.6 ms
delivery.r2b2.cz/get/homepage.idnes.cz/rtb/300x250_paticka/mobile?pbid=m_paticka50 ms39 ms1.9 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation6.7 s
Other2.3 s
Script Parsing & Compilation1.4 s
Style & Layout1.0 s
Rendering209 ms
Garbage Collection161 ms
Parse HTML & CSS146 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 10.8 KiB
URLTransfer SizeEst Savings
1gr.cz/m/css/layout.css?rr=177668829834.4 KiB7.5 KiB
1gr.cz/css/idn4/layout2.css?rr=177668919530.6 KiB3.3 KiB

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.

Estimated savings: 0.0 ms 2.3 KiB
URLTransfer SizeEst Savings
1gr.cz/js/uni/modules/gptAds.js?rr=17724443215.8 KiB2.3 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
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js272.7 KiB
imasdk.googleapis.com/js/core/bridge3.758.1_cs.html?gdpr=1271.0 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile268.6 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...180.2 KiB
/videoPlayer/caroda.min.js?ctok=1621d6062379002b66476db7&...178.9 KiB
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1161.0 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js147.2 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...142.6 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
div > div > a > img div > div > a > img
d49-a.sdn.cz/d_49/c_img_p9_A/nPVpfd5QLLDqzReJbEF7bFAG/8428.jpeg
iDNES.cz div#iph-row > h1.iph-logo > a > img
1gr.cz/u/loga-n4/idnes.svg
body > div#wrapper > div.counters > img body > div#wrapper > div.counters > img
/u/free.gif?r=Gwa&p=QggUJu-bs3%7cvBC9dE9j7%7cPMwEk_-1j%7c...

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
●Optimize viewport for mobile
●User Timing marks and measures 8 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 640 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 90 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○Avoid non-composited animations
71

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
00:17 div.arts-1 > ul#last-art-newAll > li#element-630 > span#timeetim-_0
00:00 div.arts-1 > ul#last-art-newAll > li#element-631 > span#timeetim-_1
00:00 div.arts-1 > ul#last-art-newAll > li#element-632 > span#timeetim-_2
00:00 div.arts-1 > ul#last-art-newAll > li#element-633 > span#timeetim-_3

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
MAFRA, a. s. div#footer > div.content > div#copyright > a
Profimedia div#footer > div.content > div#copyright > a.profimedia

These are opportunities to improve the legibility of your content.

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
div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img
body > div#wrapper > img body > div#wrapper > img
div > div > a > img div > div > a > img

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
body > iframe.counters body > iframe.counters
body > iframe#carodaPrebidRunner body > iframe#carodaPrebidRunner

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#r-touchbranding > div.r-body > div#m_branding > a#banner000 div#r-touchbranding > div.r-body > div#m_branding > a#banner000
div.group-menu > ul > li > a.ico-setting div.group-menu > ul > li > a.ico-setting
div.r-body > div#m_300x250 > div#m_300x250_wrapper_40519436 > a div.r-body > div#m_300x250 > div#m_300x250_wrapper_40519436 > a
div#wrapper > div#footer > div.content > a.f-top div#wrapper > div#footer > div.content > a.f-top
div > div > div > a div > div > div > 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.

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
K zubaři do Polska. První zdravotní pojišťovna od dubna hradí péči za hranicí div#top > div.art > a#assembly-art-0 > h3
FINANCE div.group > div.art > div.art-info > h5
ZPRÁVY div.group > div.art > div.art-info > h5
PRAHA div.group > div.art > div.art-info > h5
EKONOMIKA div.group > div.art > div.art-info > h5
HRY div.group > div.art > div.art-info > h5
AUTO div.group > div.art > div.art-info > h5
TECHNET div.group > div.art > div.art-info > h5
XMAN div.group > div.art > div.art-info > h5
ONADNES div.group > div.art > div.art-info > h5
BYDLENÍ div.group > div.art > div.art-info > h5
REVUE div.group > div.art > div.art-info > h5
REVUE div.group > div.art > div.art-info > h5
REVUE div.group > div.art > div.art-info > h5
OLOMOUC div.group > div.art > div.art-info > h5
LIBEREC div.group > div.art > div.art-info > h5
ONADNES div.group > div.art > div.art-info > h5
HBO MAX ul > li > div.art-info > h5
E-KNIHA ul > li > div.art-info > h5
E-KNIHA ul > li > div.art-info > h5
FOTBAL div.group > div.art > div.art-info > h5
FOTBAL div.group > div.art > div.art-info > h5
HOKEJ div.group > div.art > div.art-info > h5
FOTBAL div.group > div.art > div.art-info > h5
FOTBAL div.group > div.art > div.art-info > h5
FOTBAL div.group > div.art > div.art-info > h5
EXPRES div.group > div.art > div.art-info > h5
JENPROMUŽE div.group > div.art > div.art-info > h5
EXPRES div.group > div.art > div.art-info > h5
EXPRES div.group > div.art > div.art-info > h5
JIŘÍ MAY div.group > div.outflex > div.art > h4

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
FINANCE div.art > div.art-info > h5 > a
ZPRÁVY div.art > div.art-info > h5 > a
PRAHA div.art > div.art-info > h5 > a
EKONOMIKA div.art > div.art-info > h5 > a
HRY div.art > div.art-info > h5 > a
AUTO div.art > div.art-info > h5 > a
TECHNET div.art > div.art-info > h5 > a
XMAN div.art > div.art-info > h5 > a
ONADNES div.art > div.art-info > h5 > a
BYDLENÍ div.art > div.art-info > h5 > a
REVUE div.art > div.art-info > h5 > a
REVUE div.art > div.art-info > h5 > a
REVUE div.art > div.art-info > h5 > a
OLOMOUC div.art > div.art-info > h5 > a
LIBEREC div.art > div.art-info > h5 > a
ONADNES div.art > div.art-info > h5 > a
HBO MAX li > div.art-info > h5 > a
E-KNIHA li > div.art-info > h5 > a
E-KNIHA li > div.art-info > h5 > a
FOTBAL div.art > div.art-info > h5 > a
FOTBAL div.art > div.art-info > h5 > a
HOKEJ div.art > div.art-info > h5 > a
FOTBAL div.art > div.art-info > h5 > a
FOTBAL div.art > div.art-info > h5 > a
FOTBAL div.art > div.art-info > h5 > a
EXPRES div.art > div.art-info > h5 > a
JENPROMUŽE div.art > div.art-info > h5 > a
EXPRES div.art > div.art-info > h5 > a
EXPRES div.art > div.art-info > h5 > a
Reklama div.content > ul#f-lnk > li > a
VOP div.content > ul#f-lnk > li > a
Osobní údaje div.content > ul#f-lnk > li > a
Cookies div.content > ul#f-lnk > li > a
AV + DSA div.content > ul#f-lnk > li > a
Kariéra div.content > ul#f-lnk > li > a
Předplatné MF DNES div.content > ul#f-lnk > li > a

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#idnes-cz html#idnes-cz

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
●Input buttons have discernible text.
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Identical links have the same purpose.
○`[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 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
○Buttons have an accessible name
○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 type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○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.
○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.
73

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Topics
cdn.cpex.cz/hb/prebid/prebid.min.js line 11, col 32973
Unload event listeners are deprecated and will be removed.
h.seznam.cz/js/dot-small.js

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
1gr.cz/js/uni/paticka.js?rr=1776765780 line 126, col 7229
🤑 SAS: Chybející element pozice m_300x250_infinite
1gr.cz/js/uni/paticka.js?rr=1776765780 line 126, col 7229
🤑 SAS: Chybející element pozice m_nativ_infinite
/api/impresion?campainId=31216&positionId=292&rnd=0.12439...
Failed to load resource: net::ERR_BLOCKED_BY_RESPONSE.NotSameOrigin

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Blocked by cross-origin policy
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
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
Další div#iph > ul#iph-row3 > li.iph-more > a
Nastavení soukromí div.content > ul#f-lnk > li > a
div.counters > div#iphhm-out > div#iphhm > a.iphhm-close div.counters > div#iphhm-out > div#iphhm > a.iphhm-close

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
div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img div#m_300x250 > div#m_300x250_wrapper_40519436 > a > img
body > div#wrapper > img body > div#wrapper > img
div > div > a > img div > div > a > 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
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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