D — https://idnes.cz | BeaverCheck Audit

Site Health

Score: 69 / 100

Based on 8 categories, 0 sections

Room to improve — your 20.4s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Major barriers for users with disabilities — up to 15% of your audience.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Cart Functionality · 356 peers

You 69

Avg 72

At average

0 50 100

Better than 7% of Cart Functionality sites See full Cart Functionality benchmark →

core-js · 960 peers

You 69

Avg 72

At average

0 50 100

Better than 8% of core-js sites See full core-js benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Page weighs 17.4 MB (4.9 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

2 control(s) without accessible label

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Form Accessibility

23 image-only link(s) without alt text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fidnes.cz)](https://beavercheck.com/results/61851f0b-adc3-4e83-8b74-f793e63faacd)

HTML

<a href="https://beavercheck.com/results/61851f0b-adc3-4e83-8b74-f793e63faacd"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fidnes.cz" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fidnes.cz

This badge auto-updates with your latest scan result.

What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 20.4s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.

Your LCP is 20.4s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

2 accessibility issues exclude users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

2 critical 4 warning

6 barrier(s) likely increasing bounce by ~28%.

Speed (2)

Page takes 20.4s to load

+12% bounce

Users abandon at ~3s — you're 17.9s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 2.1s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (1)

2 form field(s) without a label

+4% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Navigation (1)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

CZK 6,600 investment → CZK 29/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -95%

Investment

CZK 6,600

6h · 5 findings

Monthly returns

CZK 29 /mo

~CZK 344 / year

Bandwidth savings CZK 29

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
GDPR EUR 20,000,000
EAA EUR 500,000

CZK 1,100 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

Kč6,600

6.0 developer hours at Kč1100/hr

Based on Czech Republic rates (Kč1100/hr)

Quick wins

Kč1,100 2 fixes in ~60 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

Kč /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

CZK 10,041,695 / month at risk

~CZK 120,500,344 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA

No privacy policy link detected
GDPR: EUR 10,000 – EUR 20,000,000
2 advertising/retargeting trackers detected
GDPR: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
GDPR: EUR 5,000 – EUR 10,000,000

+49 more

Bandwidth Waste

CZK 29 /mo

15418.9 MB/mo × 1.860 CZK/GB

Optimize transfer: save ~1.5 MB per page load
Saves CZK 29/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

8.76 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

20.45 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

2.08 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.038

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

13.93 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

36.35 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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.

Request	Cache TTL	Transfer Size
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	10800.0 s	272.7 KiB
1gr.cz/data/alza/965f925a-981d-4cf6-8cb0-b0f33700af71.jpg	3600.0 s	74.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js	86400.0 s	132.0 KiB
h.seznam.cz/js/dot-small.js	3600.0 s	62.1 KiB
aa.1gr.cz/mafra/4513/300x250px_Skle_s_CTA.jpg	60.0 s	45.4 KiB
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aa.1gr.cz/mafra/2617/ad-banner-300x600-480x300.jpg	60.0 s	41.3 KiB
d49-a.sdn.cz/d_49/c_img_p9_A/nPVpfd5QLLDqzReJbEF7bFAG/8428.jpeg	89025.0 s	96.0 KiB
ssp.seznam.cz/static/js/ssp.js	3600.0 s	45.4 KiB
aa.1gr.cz/mafra/249/Pustevny2.jpg	60.0 s	15.9 KiB
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js	3600.0 s	15.4 KiB
cdn.cpex.cz/package/cpex-package.min.js	86400.0 s	30.2 KiB
spir.hit.gemius.pl/xgemius.js	43200.0 s	19.4 KiB
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg	604800.0 s	83.0 KiB
s1.adform.net/Banners/34896265/34896265.jpg?bv=1	604800.0 s	82.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg	604800.0 s	80.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpg	604800.0 s	74.1 KiB
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg	604800.0 s	67.6 KiB
/mysidia/9475976b3d2af33fba37207c76515039.js?tag=addon/my...	86400.0 s	16.8 KiB
1gr.cz/js/uni/paticka.js?rr=1776765780	604800.0 s	59.9 KiB
static.criteo.net/js/ld/publishertag.ids.js	86400.0 s	14.8 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg	604800.0 s	56.7 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg	604800.0 s	41.3 KiB
/mysidia/d6b7775af140386df9644679ecc3cc4d.js?tag=pingback...	86400.0 s	9.2 KiB
ssp.seznam.cz/static/img/advert.svg	3600.0 s	4.4 KiB
1gr.cz/m/css/layout.css?rr=1776688298	604800.0 s	34.4 KiB
1gr.cz/data/uni/touchmenu.js?rr=046	3600.0 s	4.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg	604800.0 s	33.7 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	604800.0 s	30.6 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpg	3600.0 s	3.7 KiB
invstatic101.creativecdn.com/encrypted-signals/encrypted-tag-g.js	0.0 ms	2.9 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpg	3600.0 s	3.5 KiB
1gr.cz/js/uni/uni.js?rr=1774003235	604800.0 s	26.1 KiB
/mysidia/36911556a544bc231f894d5d9da4f6bd.js?tag=scream/c...	86400.0 s	4.8 KiB
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg	604800.0 s	19.1 KiB
1gr.cz/fotky/idnes/26/023/w230/LYO8ed99a2840_04_Chalupa_NP.JPG	604800.0 s	18.7 KiB
1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg	604800.0 s	18.0 KiB
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg	604800.0 s	17.9 KiB
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpg	604800.0 s	16.7 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpg	604800.0 s	16.6 KiB
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg	604800.0 s	14.6 KiB
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	604800.0 s	14.0 KiB
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg	604800.0 s	13.9 KiB
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpg	604800.0 s	13.8 KiB
1gr.cz/fotky/idnes/21/103/w230/MBB8f0257_vlasak.jpg	604800.0 s	13.4 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpg	604800.0 s	13.2 KiB
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpg	604800.0 s	12.7 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpg	604800.0 s	12.6 KiB
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg	604800.0 s	12.3 KiB
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpg	604800.0 s	12.3 KiB
cdn.cpex.cz/settings/production/mafra/idnes.cz.js	86400.0 s	3.0 KiB
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpg	604800.0 s	11.8 KiB
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg	604800.0 s	11.7 KiB
1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpg	604800.0 s	11.5 KiB
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg	604800.0 s	11.4 KiB
1gr.cz/fotky/idnes/23/042/w230/SRP9ac2f0_Clipboard02.jpg	604800.0 s	10.9 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43069_104035290.jpg	604800.0 s	10.7 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	604800.0 s	10.5 KiB
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg	604800.0 s	10.4 KiB
cdn.cpex.cz/settings/production/mafra.js	86400.0 s	2.5 KiB
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg	604800.0 s	10.1 KiB
1gr.cz/m/js/touch.js?rr=1763630729	604800.0 s	9.8 KiB
1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpg	604800.0 s	9.5 KiB
/pagead/js/r20260420/r20110914/elements/html/interstitial...	1209600.0 s	9.4 KiB
/pagead/js/r20260420/r20110914/client/qs_click_protection...	1209600.0 s	8.5 KiB
pagead2.googlesyndication.com/pagead/js/r20260420/r20110914/abg_lite_fy2021.js	1209600.0 s	8.4 KiB
ssp.seznam.cz/static/img/paw-2.svg	3600.0 s	1021 B
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg	604800.0 s	7.9 KiB
/mysidia/33def007df2ca53167473814f8dc82ef.js?tag=addon/an...	86400.0 s	1.9 KiB
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpg	604800.0 s	6.8 KiB
/pagead/js/r20260420/r20110914/elements/html/fullscreen_a...	1209600.0 s	6.7 KiB
1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpg	604800.0 s	6.5 KiB
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321	604800.0 s	6.2 KiB
1gr.cz/fotky/blogy/24/06/37637/midi/Bf833277.jpeg	604800.0 s	6.0 KiB
/mysidia/eb506c874c4df599e8b527ba6b052c54.js?tag=engine/c...	86400.0 s	1.4 KiB
1gr.cz/fotky/blogy/25/11/60415/midi/Bf871305.jpeg	604800.0 s	4.9 KiB
1gr.cz/o/televize/loga-m/nova.png	604800.0 s	4.9 KiB
1gr.cz/fotky/blogy/25/04/60198/midi/Bf854727.jpeg	604800.0 s	4.7 KiB
delivery.r2b2.cz/static/mafra/idnes-toggleSticky.js	0.0 ms	474 B
1gr.cz/css/idn4/uni.css?rr=1775735653	604800.0 s	3.9 KiB
1gr.cz/o/pocasi/iw/iw-p.svg	604800.0 s	3.6 KiB
1gr.cz/css/idn4/base.css?rr=1775574083	604800.0 s	3.1 KiB
1gr.cz/css/idn4/base.css?v=18	604800.0 s	3.1 KiB
1gr.cz/u/idn4/obrazek-neni-k-dispozici.png	604800.0 s	3.1 KiB
1gr.cz/js/sph/2025.js?rr=1775651079	604800.0 s	3.0 KiB
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...	0.0 ms	261 B
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...	0.0 ms	260 B
/api/hit.gif?type=player&ctok=1621d6062379002b66476db7&do...	0.0 ms	260 B
/api/hit.gif?campaignId=czb3da27e513284a&ctok=1621d606237...	0.0 ms	259 B
1gr.cz/u/loga-n4/ticketportal-plg.svg	604800.0 s	2.1 KiB
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587	604800.0 s	2.1 KiB
1gr.cz/u/loga-n4/idnes.svg	604800.0 s	2.0 KiB
1gr.cz/o/televize/loga-m/prima.png	604800.0 s	2.0 KiB
1gr.cz/o/televize/loga-m/ct-1.png	604800.0 s	2.0 KiB
1gr.cz/u/idn4/reklama-bg-min.svg	604800.0 s	1.6 KiB
1gr.cz/o/televize/loga-m/ct-2.png	604800.0 s	1.4 KiB
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109	604800.0 s	1.3 KiB
1gr.cz/js/cmp/cookiewallCMP.js	604800.0 s	1.3 KiB
/pagead/js/r20260420/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.2 KiB
1gr.cz/m/css/reklama.css?rr=1761304483	604800.0 s	1.1 KiB
1gr.cz/u/icon/000/social-tiktok.svg	604800.0 s	1.1 KiB
/pagead/js/r20260420/r20110914/elements/html/ad_exit_moni...	1209600.0 s	1.1 KiB
1gr.cz/m/js/sph.js?rr=01	604800.0 s	1.1 KiB
1gr.cz/u/icon/000/login0.svg	604800.0 s	1018 B
1gr.cz/u/icon/000/social-instagram.svg	604800.0 s	1006 B
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1gr.cz/u/icon/000/mail2.svg	604800.0 s	768 B
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1gr.cz/u/icon/000/setting.svg	604800.0 s	650 B
1gr.cz/u/free.gif#135x75	604800.0 s	323 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.

	URL	Resource Size	Est Savings
div > div > a > img `div > div > a > img`	d49-a.sdn.cz/d_49/c_img_p9_A/nPVpfd5QLLDqzReJbEF7bFAG/8428.jpeg	95.5 KiB	80.8 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.jpg	82.7 KiB	80.5 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.jpg	79.9 KiB	77.8 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.jpg	73.8 KiB	71.6 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.jpg	67.4 KiB	65.2 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.jpg	56.5 KiB	54.3 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.jpg	41.0 KiB	38.8 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.jpg	45.0 KiB	32.8 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.jpg	33.4 KiB	21.2 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.jpg	18.8 KiB	17.1 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.JPG	18.4 KiB	16.8 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.jpg	17.7 KiB	16.0 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.jpg	17.6 KiB	16.0 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.jpg	16.4 KiB	14.7 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.jpg	16.3 KiB	14.6 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.jpg	15.5 KiB	13.8 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.jpg	14.3 KiB	12.6 KiB
Sara Sandeva, Daniel Makovec `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	13.7 KiB	12.1 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.jpg	13.6 KiB	11.9 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.jpg	12.4 KiB	10.8 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.jpg	12.1 KiB	10.4 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.jpg	11.5 KiB	9.8 KiB
ilustrační snímek `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg	11.5 KiB	9.8 KiB
Monika Timková `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpg	11.2 KiB	9.6 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.jpg	11.1 KiB	9.4 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.jpg	10.6 KiB	8.9 KiB
Veronika Žilková `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	10.2 KiB	8.5 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.jpg	10.2 KiB	8.5 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.jpg	9.8 KiB	8.1 KiB
ilustrační snímek `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg	7.6 KiB	6.0 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.

URL	Protocol
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg	http/1.1
1gr.cz/fonts/Inter/inter-regular.woff2	http/1.1
1gr.cz/fonts/Fira/firasans-semibold.woff2	http/1.1
1gr.cz/css/idn4/base.css?rr=1775574083	http/1.1
1gr.cz/css/idn4/uni.css?rr=1775735653	http/1.1
1gr.cz/m/css/reklama.css?rr=1761304483	http/1.1
1gr.cz/m/css/layout.css?rr=1776688298	http/1.1
1gr.cz/css/idn4/layout2.css?rr=1776689195	http/1.1
1gr.cz/js/uni/uni.js?rr=1774003235	http/1.1
1gr.cz/m/js/touch.js?rr=1763630729	http/1.1
1gr.cz/js/cmp/cookiewallCMP.js	http/1.1
1gr.cz/u/loga-n4/idnes.svg	http/1.1
1gr.cz/o/pocasi/iw/iw-p.svg	http/1.1
1gr.cz/u/free.gif#135x75	http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43069_104035290.jpg	http/1.1
1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpg	http/1.1
1gr.cz/m/js/sph.js?rr=01	http/1.1
1gr.cz/data/uni/touchmenu.js?rr=046	http/1.1
1gr.cz/js/uni/paticka.js?rr=1776765780	http/1.1
1gr.cz/js/sph/2025.js?rr=1775651079	http/1.1
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109	http/1.1
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587	http/1.1
1gr.cz/css/idn4/base.css?v=18	http/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.svg	http/1.1
1gr.cz/u/icon/000/menu.svg	http/1.1
1gr.cz/fonts/Fira/firasans-semibold.woff2?20210115	http/1.1
/log/redir.aspx?log=hax&r=sphtouch_partner_zobrazeni_x1&f...	http/1.1
1gr.cz/u/icon/000/arrow2-right.svg	http/1.1
1gr.cz/u/idn4/obrazek-neni-k-dispozici.png	http/1.1
1gr.cz/u/idn4/reklama-bg-min.svg	http/1.1
1gr.cz/u/loga-n4/ticketportal-plg.svg	http/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpg	http/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpg	http/1.1
1gr.cz/u/icon/000/setting.svg	http/1.1
1gr.cz/u/icon/000/more.svg	http/1.1
1gr.cz/o/televize/loga-m/ct-1.png	http/1.1
1gr.cz/o/televize/loga-m/nova.png	http/1.1
1gr.cz/o/televize/loga-m/prima.png	http/1.1
1gr.cz/o/televize/loga-m/ct-2.png	http/1.1
1gr.cz/fotky/blogy/25/04/60198/midi/Bf854727.jpeg	http/1.1
1gr.cz/fotky/blogy/24/06/37637/midi/Bf833277.jpeg	http/1.1
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpg	http/1.1
1gr.cz/fotky/blogy/25/11/60415/midi/Bf871305.jpeg	http/1.1
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpg	http/1.1
1gr.cz/fotky/idnes/21/103/w230/MBB8f0257_vlasak.jpg	http/1.1
1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpg	http/1.1
1gr.cz/u/icon/000/discusion.svg	http/1.1
1gr.cz/u/icon/000/desktop.svg	http/1.1
1gr.cz/u/icon/000/mail2.svg	http/1.1
1gr.cz/u/icon/000/rss.svg	http/1.1
1gr.cz/u/icon/000/social-facebook.svg	http/1.1
1gr.cz/u/icon/000/social-twitter.svg	http/1.1
1gr.cz/u/icon/000/social-instagram.svg	http/1.1
1gr.cz/u/icon/000/social-tiktok.svg	http/1.1
1gr.cz/u/icon/000/social-telegram.svg	http/1.1
1gr.cz/fonts/Inter/inter-semibold.woff2	http/1.1
1gr.cz/fonts/Inter/inter-extrabold.woff2	http/1.1
1gr.cz/log/scorepv.aspx?page=sph-TFB&multiple=1	http/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.jpg	http/1.1
1gr.cz/u/icon/000/arrow-down.svg	http/1.1
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg	http/1.1
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg	http/1.1
1gr.cz/fotky/idnes/26/023/w230/LYO8ed99a2840_04_Chalupa_NP.JPG	http/1.1
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg	http/1.1
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg	http/1.1
1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg	http/1.1
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpg	http/1.1
1gr.cz/fotky/idnes/26/022/w230/BIB5bcc897955_751021_105138_Instagram.jpg	http/1.1
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	http/1.1
1gr.cz/fotky/idnes/23/042/w230/SRP9ac2f0_Clipboard02.jpg	http/1.1
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpg	http/1.1
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321	http/1.1
1gr.cz/data/nocache/alza/2019/HK_Alza_Dny_Duben_AMB569_768x1230_HP_M.js	http/1.1
1gr.cz/data/alza/965f925a-981d-4cf6-8cb0-b0f33700af71.jpg	http/1.1
/log/redir.aspx?log=hax&r=testtouch_share_false&from=rubr...	http/1.1
1gr.cz/u/favicon/idnes.ico	http/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.

URL	Transfer Size	Duration
1gr.cz/js/uni/uni.js?rr=1774003235	26.1 KiB	1.6 s
1gr.cz/m/js/touch.js?rr=1763630729	9.8 KiB	1.2 s
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.6 KiB	1.8 s
1gr.cz/m/css/layout.css?rr=1776688298	34.4 KiB	2.0 s
1gr.cz/css/idn4/uni.css?rr=1775735653	3.9 KiB	852 ms
1gr.cz/m/css/reklama.css?rr=1761304483	1.1 KiB	852 ms
1gr.cz/css/idn4/base.css?rr=1775574083	3.1 KiB	852 ms
1gr.cz/css/idn4/base.css?v=18	3.1 KiB	185 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

URL	Time 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

URL	Transfer Size	Est Savings
1gr.cz/m/css/layout.css?rr=1776688298	34.1 KiB	32.0 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.2 KiB	27.3 KiB
	17.2 KiB	15.6 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 3.3 s 1.4 MiB

URL	Transfer Size	Est Savings
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	272.4 KiB	203.1 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile	268.4 KiB	162.5 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...	179.5 KiB	115.0 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	108.9 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	108.7 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	108.4 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	91.8 KiB
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...	142.0 KiB	78.9 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js	146.8 KiB	77.8 KiB
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1	161.0 KiB	67.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WD22KH	132.9 KiB	56.9 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js	131.6 KiB	49.5 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	101.1 KiB	44.5 KiB
1gr.cz/js/uni/paticka.js?rr=1776765780	59.6 KiB	30.9 KiB
h.seznam.cz/js/dot-small.js	61.8 KiB	28.1 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...	53.4 KiB	23.2 KiB
cdn.cpex.cz/package/cpex-package.min.js	29.8 KiB	21.4 KiB
ssp.seznam.cz/static/js/ssp.js	45.0 KiB	21.1 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.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	1.8 s	359 ms	0.0 ms
www.idnes.cz/	1.3 s	175 ms	12 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	1.2 s	905 ms	215 ms
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...	927 ms	684 ms	15 ms
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile	851 ms	510 ms	116 ms
cdn.cpex.cz/hb/prebid/prebid.min.js	661 ms	581 ms	30 ms
/videoPlayer/caroda.min.js?ctok=1621d6062379002b66476db7&...	558 ms	94 ms	453 ms
1gr.cz/js/uni/paticka.js?rr=1776765780	511 ms	305 ms	32 ms
imasdk.googleapis.com/js/sdkloader/ima3.js	474 ms	321 ms	33 ms
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js	427 ms	320 ms	58 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	307 ms	253 ms	34 ms
www.googletagmanager.com/gtm.js?id=GTM-WD22KH	229 ms	187 ms	40 ms
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	225 ms	141 ms	62 ms
/videoPlayer/v/e1286e03b5aec700c51b5fab063fe9e96361726f64...	225 ms	178 ms	45 ms
ssp.seznam.cz/static/js/ssp.js	215 ms	180 ms	19 ms
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1	205 ms	164 ms	39 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	188 ms	147 ms	38 ms
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321	183 ms	170 ms	5.3 ms
1gr.cz/js/sph/2025.js?rr=1775651079	164 ms	4.3 ms	1.6 ms
h.seznam.cz/js/dot-small.js	161 ms	140 ms	12 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...	157 ms	101 ms	21 ms
/get/homepage.idnes.cz/generic/300x250_paticka/mobile?pbi...	150 ms	118 ms	3.3 ms
delivery.r2b2.cz/get/homepage.idnes.cz/generic/fixed/mobile?pbid=m_sticky	107 ms	78 ms	16 ms
ep2.adtrafficquality.google/sodar/sodar2.js	102 ms	87 ms	10 ms
/get/homepage.idnes.cz/rtb-premium/300x250_paticka/mobile...	85 ms	68 ms	2.1 ms
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js	78 ms	73 ms	3.4 ms
1gr.cz/js/cmp/cookiewallCMP.js	75 ms	45 ms	6.1 ms
pagead2.googlesyndication.com/tag/js/gpt.js	67 ms	57 ms	9.6 ms
delivery.r2b2.cz/get/homepage.idnes.cz/rtb/300x250_paticka/mobile?pbid=m_paticka	50 ms	39 ms	1.9 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.

Category	Time Spent
Script Evaluation	6.7 s
Other	2.3 s
Script Parsing & Compilation	1.4 s
Style & Layout	1.0 s
Rendering	209 ms
Garbage Collection	161 ms
Parse HTML & CSS	146 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in 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

URL	Transfer Size	Est Savings
1gr.cz/m/css/layout.css?rr=1776688298	34.4 KiB	7.5 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.6 KiB	3.3 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

URL	Transfer Size	Est Savings
1gr.cz/js/uni/modules/gptAds.js?rr=1772444321	5.8 KiB	2.3 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.

URL	Transfer Size
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	272.7 KiB
imasdk.googleapis.com/js/core/bridge3.758.1_cs.html?gdpr=1	271.0 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_mobile	268.6 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 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=4e64h1	161.0 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js	147.2 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

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.

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
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.

Source	Description
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

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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.26 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.57 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

59 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.42 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.52 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:2.242 source:map[column:81321 line:1 type:source-location url: 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:2.242 source:map[column:80054 line:0 type:source-location url: urlProvider:network]] map[reflowTime:29.382 source:map[column:53318 line:0 type:source-location url: urlProvider:network]] map[reflowTime:26.86 source:map[type:text value:[unattributed]]] map[reflowTime:7.189 source:map[column:24 line:7 type:source-location url:https://1gr.cz/js/sph/2025.js?rr=1775651079 urlProvider:network]] map[reflowTime:0.301 source:map[column:285 line:3855 type:source-location url:https://www.idnes.cz/ urlProvider:network]] map[reflowTime:0.557 source:map[column:1796 line:126 type:source-location url:https://1gr.cz/js/uni/paticka.js?rr=1776765780 urlProvider:network]]]

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.

URL	Protocol
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg	http/1.1
1gr.cz/fonts/Inter/inter-regular.woff2	http/1.1
1gr.cz/fonts/Fira/firasans-semibold.woff2	http/1.1
1gr.cz/css/idn4/base.css?rr=1775574083	http/1.1
1gr.cz/css/idn4/uni.css?rr=1775735653	http/1.1
1gr.cz/css/externi/reklama.css?rr=1761728186	http/1.1
1gr.cz/css/idn4/portal.css?rr=1776344860	http/1.1
1gr.cz/css/idn4/layout.css?rr=1776769830	http/1.1
1gr.cz/css/idn4/layout2.css?rr=1776689195	http/1.1
1gr.cz/js/uni/uni.js?rr=1774003235	http/1.1
1gr.cz/js/cmp/cookiewallCMP.js	http/1.1
1gr.cz/u/loga-n4/idnes.svg	http/1.1
1gr.cz/o/pocasi/iw/iw-p.svg	http/1.1
1gr.cz/pocasi/sph2023.png?rr=71	http/1.1
1gr.cz/u/free.gif#230x129	http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpg	http/1.1
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1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpg	http/1.1
1gr.cz/js/sph/mereni.js?rr=1717074100441	http/1.1
1gr.cz/js/uni/paticka.js?rr=1776765780	http/1.1
1gr.cz/js/sph/2025.js?rr=1775651079	http/1.1
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109	http/1.1
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587	http/1.1
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1gr.cz/u/idn4/reklama.svg	http/1.1
1gr.cz/u/icon/000/login0.svg	http/1.1
1gr.cz/u/icon/000/menu.svg	http/1.1
1gr.cz/fonts/Inter/inter-semibold.woff2	http/1.1
1gr.cz/u/idn4/obrazek-neni-k-dispozici.png	http/1.1
1gr.cz/o/sph/mask-map3.png	http/1.1
1gr.cz/u/icon/000/arrow2-right.svg	http/1.1
1gr.cz/u/idn4/reklama-bg-min.svg	http/1.1
1gr.cz/u/loga-n4/ticketportal-plg.svg	http/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpg	http/1.1
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpg	http/1.1
1gr.cz/u/icon/000/setting.svg	http/1.1
1gr.cz/fonts/Inter/inter-extrabold.woff2	http/1.1
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg	http/1.1
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1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg	http/1.1
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1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg	http/1.1
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/w230/MCEc81c1e5048_26250730_1E1A6354_result.jpg	http/1.1
1gr.cz/fotky/idnes/24/081/w230/SUB4c4a994739_profimedia_0876203841.jpg	http/1.1
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	http/1.1
1gr.cz/fotky/idnes/26/033/w230/DOH96ffba7c5a_profimedia_0289316543.jpg	http/1.1
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg	http/1.1
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg	http/1.1
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg	http/1.1
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1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg	http/1.1
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1gr.cz/fotky/idnes/25/082/w230/KAZ78096180b_42TENNIS_CINCINNATI_OPEN.JPG	http/1.1
1gr.cz/fotky/idnes/26/043/w230/TTY5d7e8cf4bc_03_4081.jpg	http/1.1
1gr.cz/fotky/lidovky/26/042/w230/LVO81c75ff186_profimedia_0720702848.jpg	http/1.1
1gr.cz/u/icon/000/more.svg	http/1.1
1gr.cz/o/televize/loga-m/ct-1.png	http/1.1
1gr.cz/o/televize/loga-m/nova.png	http/1.1
1gr.cz/o/televize/loga-m/prima.png	http/1.1
1gr.cz/o/televize/loga-m/ct-2.png	http/1.1
1gr.cz/fotky/blogy/25/04/60198/midi/Bf854727.jpeg	http/1.1
1gr.cz/fotky/blogy/24/06/37637/midi/Bf833277.jpeg	http/1.1
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpg	http/1.1
1gr.cz/fotky/blogy/25/11/60415/midi/Bf871305.jpeg	http/1.1
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpg	http/1.1
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1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpg	http/1.1
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpg	http/1.1
1gr.cz/u/icon/000/mobile2.svg	http/1.1
1gr.cz/u/icon/000/mail2.svg	http/1.1
1gr.cz/u/icon/000/rss.svg	http/1.1
1gr.cz/u/icon/000/social-facebook.svg	http/1.1
1gr.cz/u/icon/000/social-twitter.svg	http/1.1
1gr.cz/u/icon/000/social-instagram.svg	http/1.1
1gr.cz/u/icon/000/social-tiktok.svg	http/1.1
1gr.cz/u/icon/000/social-telegram.svg	http/1.1
1gr.cz/u/icon/fff/arrow-up.svg	http/1.1
1gr.cz/log/scorepv.aspx?page=sph-DFA&multiple=1	http/1.1
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg	http/1.1
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1gr.cz/u/favicon/idnes.ico	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.

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

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
1gr.cz/js/uni/uni.js?rr=1774003235	26.1 KiB	444 ms
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.6 KiB	444 ms
1gr.cz/css/idn4/layout.css?rr=1776769830	31.8 KiB	444 ms
1gr.cz/css/idn4/portal.css?rr=1776344860	7.6 KiB	300 ms
1gr.cz/css/externi/reklama.css?rr=1761728186	4.0 KiB	300 ms
1gr.cz/css/idn4/base.css?rr=1775574083	3.1 KiB	300 ms
1gr.cz/css/idn4/uni.css?rr=1775735653	3.9 KiB	300 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	10800.0 s	272.7 KiB
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aa.1gr.cz/mafra/2865/MPSV_JHMZ_banner_480x960.jpg	60.0 s	94.5 KiB
aa.1gr.cz/mafra/4513/300x600px_eeMafra.jpg	60.0 s	80.0 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js	86400.0 s	132.0 KiB
aa.1gr.cz/mafra/4464/SilentLab_clanek_200x118px.png	60.0 s	53.2 KiB
h.seznam.cz/js/dot-small.js	3600.0 s	62.1 KiB
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aa.1gr.cz/mafra/2617/ad-banner-300x600-480x300.jpg	60.0 s	41.3 KiB
ssp.seznam.cz/static/js/ssp.js	3600.0 s	45.4 KiB
aa.1gr.cz/mafra/249/Pustevny2.jpg	60.0 s	15.8 KiB
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cdn.cpex.cz/package/cpex-package.min.js	86400.0 s	30.2 KiB
spir.hit.gemius.pl/xgemius.js	43200.0 s	19.4 KiB
1gr.cz/fotky/idnes/26/043/vidw/PEC720e8ef798_27y.00_01_27_19.Still003.jpg	604800.0 s	83.0 KiB
s1.adform.net/Banners/34896265/34896265.jpg?bv=1	604800.0 s	82.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg	604800.0 s	80.2 KiB
1gr.cz/fotky/idnes/26/043/vidw/JDA8b33b674d1_Sequence58.jpg	604800.0 s	74.1 KiB
1gr.cz/fotky/idnes/16/022/vidw/BIB616589_profimedia_0015406278.jpg	604800.0 s	67.6 KiB
1gr.cz/js/uni/paticka.js?rr=1776765780	604800.0 s	59.9 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5defa37882_image.jpg	604800.0 s	56.7 KiB
1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg	604800.0 s	41.3 KiB
ssp.seznam.cz/static/img/advert.svg	3600.0 s	4.5 KiB
1gr.cz/fotky/idnes/26/043/vidw/DAV861445f55a_46_JIHLAVA_14372215_CMYK.jpg	604800.0 s	33.7 KiB
1gr.cz/css/idn4/layout.css?rr=1776769830	604800.0 s	31.8 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	604800.0 s	30.6 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_012_Celtic.jpg	3600.0 s	3.7 KiB
1gr.cz/data/soubory/sph-adassets/A260331_MVAN_002_KOrn.jpg	3600.0 s	3.5 KiB
1gr.cz/js/uni/uni.js?rr=1774003235	604800.0 s	26.1 KiB
1gr.cz/fotky/idnes/26/042/w230/DOH8dc225670d_profimedia_1012906019.jpg	604800.0 s	19.1 KiB
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1gr.cz/fotky/idnes/26/033/w230/DOH966769d7b4_profimedia_0228287157.jpg	604800.0 s	18.0 KiB
1gr.cz/fotky/idnes/25/082/w230/JOG6228d4fce2_39_nad_Moravici_Hrady_CZ.jpg	604800.0 s	17.9 KiB
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1gr.cz/fotky/idnes/26/043/w230/DAV7b69616ef8_24_USA_VIETNAM_SVYCARSKO.jpg	604800.0 s	16.6 KiB
1gr.cz/fotky/lidovky/26/042/w230/LVO81c75ff186_profimedia_0720702848.jpg	604800.0 s	16.5 KiB
1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg	604800.0 s	14.6 KiB
1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	604800.0 s	14.0 KiB
1gr.cz/fotky/idnes/26/033/w230/BHA6a93fecc37_54gapixel_standard_v2_2x.jpg	604800.0 s	13.9 KiB
1gr.cz/fotky/idnes/26/042/s160/CZO89e67c5376_profimedia_1090428850.jpg	604800.0 s	13.8 KiB
1gr.cz/fotky/idnes/21/103/w230/MBB8f0257_vlasak.jpg	604800.0 s	13.4 KiB
ssp.seznam.cz/static/js/sf.ext.js	3600.0 s	1.7 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43778_104140126.jpg	604800.0 s	13.2 KiB
1gr.cz/fotky/idnes/26/042/w230/FDVc31bfde4e9__sb25042.jpg	604800.0 s	12.7 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43739_104119878.jpg	604800.0 s	12.6 KiB
1gr.cz/fotky/idnes/26/042/w230/BRVb2165aee6f_modelky.jpg	604800.0 s	12.3 KiB
1gr.cz/fotky/bulvar/26/042/s160/PKO8b8252d9ce_profimedia_1089353707.jpg	604800.0 s	12.3 KiB
1gr.cz/fotky/idnes/24/081/w230/SUB4c4a994739_profimedia_0876203841.jpg	604800.0 s	12.1 KiB
cdn.cpex.cz/settings/production/mafra/idnes.cz.js	86400.0 s	3.0 KiB
1gr.cz/fotky/idnes/23/042/w230/PIT9ab87a_profimedia_0755338005.jpg	604800.0 s	11.8 KiB
1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg	604800.0 s	11.7 KiB
1gr.cz/fotky/idnes/23/053/w230/PLSc0ad392721_13cf4bf4a4d3cdda67748135.jpg	604800.0 s	11.4 KiB
1gr.cz/fotky/idnes/26/043/sp5/BAP_43069_104035290.jpg	604800.0 s	10.7 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	604800.0 s	10.5 KiB
1gr.cz/fotky/idnes/26/043/w230/VOK7b84eca8e6_vivo_x300_ultra_set_31.jpg	604800.0 s	10.4 KiB
cdn.cpex.cz/settings/production/mafra.js	86400.0 s	2.5 KiB
1gr.cz/fotky/idnes/26/043/w230/MELb50e66aad1_34360_8e36_7364404a12ec.jpg	604800.0 s	10.1 KiB
1gr.cz/fotky/idnes/25/082/w230/KAZ78096180b_42TENNIS_CINCINNATI_OPEN.JPG	604800.0 s	9.5 KiB
1gr.cz/fotky/idnes/20/063/sp5/PET84393f_ODCZ26004_6B_29807.jpg	604800.0 s	9.5 KiB
1gr.cz/fotky/idnes/26/033/w230/DOH96ffba7c5a_profimedia_0289316543.jpg	604800.0 s	9.4 KiB
1gr.cz/fotky/idnes/26/043/w230/TTY5d7e8cf4bc_03_4081.jpg	604800.0 s	8.4 KiB
1gr.cz/fotky/idnes/26/043/w230/DAV87e1f80e5c_profimedia_0729407845.jpg	604800.0 s	7.9 KiB
1gr.cz/css/idn4/portal.css?rr=1776344860	604800.0 s	7.6 KiB
ssp.seznam.cz/static/img/paw-2.svg	3600.0 s	965 B
1gr.cz/fotky/blogy/15/02/18945/midi/Bf95223.jpg	604800.0 s	6.8 KiB
1gr.cz/fotky/bulvar/26/043/s160/PKO9ecabc1c6c_profimedia_0674258663.jpg	604800.0 s	6.5 KiB
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1gr.cz/js/sph/mereni.js?rr=1717074100441	604800.0 s	3.6 KiB
1gr.cz/o/pocasi/iw/iw-p.svg	604800.0 s	3.6 KiB
1gr.cz/pocasi/sph2023.png?rr=71	604800.0 s	3.4 KiB
1gr.cz/css/idn4/base.css?rr=1775574083	604800.0 s	3.1 KiB
1gr.cz/u/idn4/obrazek-neni-k-dispozici.png	604800.0 s	3.1 KiB
1gr.cz/js/sph/2025.js?rr=1775651079	604800.0 s	3.0 KiB
1gr.cz/u/loga-n4/ticketportal-plg.svg	604800.0 s	2.1 KiB
1gr.cz/js/zpravy/recombee-2024.js?rr=1744616587	604800.0 s	2.1 KiB
1gr.cz/u/loga-n4/idnes.svg	604800.0 s	2.0 KiB
1gr.cz/o/televize/loga-m/prima.png	604800.0 s	2.0 KiB
1gr.cz/o/televize/loga-m/ct-1.png	604800.0 s	2.0 KiB
/server_match?gdpr=0&gdpr_consent=&us_privacy=&gpp=&gpp_s...	0.0 ms	199 B
/server_match?gdpr=0&gdpr_consent=&us_privacy=&gpp=&gpp_s...	0.0 ms	198 B
1gr.cz/u/idn4/reklama-bg-min.svg	604800.0 s	1.6 KiB
1gr.cz/o/televize/loga-m/ct-2.png	604800.0 s	1.4 KiB
1gr.cz/js/cmp/cookiewall-info.js?rr=1756376109	604800.0 s	1.3 KiB
1gr.cz/js/cmp/cookiewallCMP.js	604800.0 s	1.3 KiB
creativecdn.com/cm-notify?pi=r2b2-pbs&tc=1	0.0 ms	124 B
creativecdn.com/cm-notify?pi=r2b2-pbs&tc=1	0.0 ms	124 B
1gr.cz/u/idn4/reklama.svg	604800.0 s	1.1 KiB
1gr.cz/u/icon/000/social-tiktok.svg	604800.0 s	1.1 KiB
1gr.cz/u/icon/000/login0.svg	604800.0 s	1018 B
1gr.cz/u/icon/000/social-instagram.svg	604800.0 s	1006 B
1gr.cz/u/icon/000/social-telegram.svg	604800.0 s	1003 B
1gr.cz/u/icon/000/rss.svg	604800.0 s	965 B
1gr.cz/u/icon/000/menu.svg	604800.0 s	878 B
1gr.cz/u/icon/000/mail2.svg	604800.0 s	768 B
1gr.cz/u/icon/000/mobile2.svg	604800.0 s	744 B
1gr.cz/u/icon/fff/arrow-up.svg	604800.0 s	744 B
1gr.cz/u/icon/000/social-twitter.svg	604800.0 s	743 B
1gr.cz/u/icon/000/social-facebook.svg	604800.0 s	724 B
1gr.cz/u/icon/000/more.svg	604800.0 s	705 B
1gr.cz/u/icon/000/arrow2-right.svg	604800.0 s	667 B
1gr.cz/u/icon/000/setting.svg	604800.0 s	650 B
ih.adscale.de/uu?cbfn=receive&t=1776812641	0.0 ms	59 B
ih.adscale.de/uu?cbfn=receive&t=1776812641	0.0 ms	58 B
1gr.cz/u/free.gif#230x129	604800.0 s	323 B
h.seznam.cz/js/dot-small.js	3600.0 s	0 B
ssp.seznam.cz/static/js/ssp.js	3600.0 s	0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
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.jpg	82.7 KiB	78.8 KiB
li > a.video-art > div.art-img > img `li > a.video-art > div.art-img > img`	1gr.cz/fotky/idnes/26/043/vidw/PECabcfbb977a_52c.00_00_45_00.still003.jpg	79.9 KiB	76.0 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.jpg	73.8 KiB	69.9 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.jpg	67.4 KiB	63.4 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.jpg	56.5 KiB	52.5 KiB
div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img `div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img`	aa.1gr.cz/mafra/4513/300x600px_eeMafra.jpg	79.6 KiB	50.3 KiB
div.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`	aa.1gr.cz/mafra/4464/SilentLab_clanek_200x118px.png	52.8 KiB	49.2 KiB
li > a.video-art > div.art-img > img `li > a.video-art > div.art-img > img`	1gr.cz/fotky/idnes/26/043/vidw/REJ5f88d01e39_influencerky_1.jpg	41.0 KiB	37.1 KiB
div#widesquare > div#widesquare_wrapper_79068143 > a > img `div#widesquare > div#widesquare_wrapper_79068143 > a > img`	aa.1gr.cz/mafra/2865/MPSV_JHMZ_banner_480x960.jpg	94.1 KiB	19.1 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.jpg	18.8 KiB	15.6 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.JPG	18.4 KiB	15.2 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.jpg	17.7 KiB	14.4 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.jpg	17.6 KiB	14.4 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.jpg	16.4 KiB	13.1 KiB
div.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`	aa.1gr.cz/mafra/249/Pustevny2.jpg	15.5 KiB	12.2 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.jpg	16.3 KiB	11.5 KiB
Královna Alžběta II. po návštěvě Royal Commonwealth Society v Londýně. (14.... `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/lidovky/26/042/w230/LVO81c75ff186_profimedia_0720702848.jpg	16.2 KiB	11.4 KiB
div.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/032/w230/VOK848fc12018_shutterstock_2427484165.jpg	14.3 KiB	11.0 KiB
Sara Sandeva, Daniel Makovec `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/bulvar/26/043/w230/STE785c7c7f33_TIL_1366.JPG	13.7 KiB	10.5 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.jpg	13.6 KiB	10.4 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.jpg	12.4 KiB	9.2 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.jpg	12.1 KiB	8.8 KiB
Alica Schmidtová, Berlín, 2024 `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/24/081/w230/SUB4c4a994739_profimedia_0876203841.jpg	11.9 KiB	8.6 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.jpg	11.5 KiB	8.2 KiB
ilustrační snímek `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/043/w230/JM7f337c24cb_profimedia_0494071231.jpg	11.5 KiB	8.2 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.jpg	33.4 KiB	8.1 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.jpg	11.1 KiB	7.8 KiB
Veronika Žilková `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/043/w230/DAV8962cc5141_profimedia_1092361509.jpg	10.2 KiB	7.0 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.jpg	10.2 KiB	6.9 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.jpg	9.8 KiB	6.6 KiB
I když má íránská ropa střední až slušnou kvalitu, zpravidla nedosahuje... `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/26/033/w230/DOH96ffba7c5a_profimedia_0289316543.jpg	9.1 KiB	5.9 KiB
Jiří Lehečka se natahuje po míčku na turnaji v Cincinnati. `div.art > a.art-link > div.art-img > img`	1gr.cz/fotky/idnes/25/082/w230/KAZ78096180b_42TENNIS_CINCINNATI_OPEN.JPG	9.2 KiB	4.4 KiB

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: 299 ms

URL	Time Spent
idnes.cz/	299 ms
www.idnes.cz/	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 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 70 ms 997.1 KiB

URL	Transfer Size	Est Savings
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	272.4 KiB	212.8 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_desktop	264.1 KiB	171.8 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	142.6 KiB
accounts.google.com/gsi/client	95.6 KiB	70.6 KiB
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1h1	161.0 KiB	67.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WD22KH	132.9 KiB	57.1 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js	131.6 KiB	47.3 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	101.2 KiB	44.6 KiB
1gr.cz/js/uni/paticka.js?rr=1776765780	59.6 KiB	31.6 KiB
h.seznam.cz/js/dot-small.js	61.7 KiB	29.9 KiB
h.seznam.cz/js/dot-small.js	61.7 KiB	27.9 KiB
ssp.seznam.cz/static/js/ssp.js	45.0 KiB	26.9 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...	53.4 KiB	23.2 KiB
ssp.seznam.cz/static/js/ssp.js	45.0 KiB	22.2 KiB
cdn.cpex.cz/package/cpex-package.min.js	29.8 KiB	21.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	1.1 s
Other	489 ms
Style & Layout	170 ms
Script Parsing & Compilation	149 ms
Rendering	68 ms
Parse HTML & CSS	44 ms
Garbage Collection	41 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in 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 16.1 KiB

URL	Transfer Size	Est Savings
1gr.cz/css/idn4/layout.css?rr=1776769830	31.8 KiB	9.6 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.6 KiB	3.3 KiB
1gr.cz/css/idn4/portal.css?rr=1776344860	7.6 KiB	3.3 KiB

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: 10 ms 73.5 KiB

URL	Transfer Size	Est Savings
1gr.cz/css/idn4/layout.css?rr=1776769830	31.4 KiB	31.1 KiB
1gr.cz/css/idn4/layout2.css?rr=1776689195	30.2 KiB	26.9 KiB
	17.2 KiB	15.6 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.

URL	Transfer Size
d49-a.sdn.cz/d_49/c_img_qA_A/nCTUX1iX5CFdAH9imGZIjlW/c7ff.jpeg	391.6 KiB
delivery.r2b2.cz/js/7.99.0/online/public/bundle.ddbf08647995741ec209.js	272.7 KiB
delivery.r2b2.cz/hb/mafra/homepage.idnes.cz_desktop	264.3 KiB
pagead2.googlesyndication.com/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB
www.googletagmanager.com/gtag/js?id=G-N7BYSDJ0DC&cx=c&gtm=4e64h1h1	161.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WD22KH	133.2 KiB
cdn.cpex.cz/hb/prebid/prebid.min.js	132.0 KiB
/d_49/c_img_qA_A/nCTUX1iX5BWLrl4oXGXcObV/dce4.png?fl=res%...	110.1 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	101.6 KiB
accounts.google.com/gsi/client	96.4 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
iDNES.cz `div#iph-row > h1.iph-logo > a > img`	1gr.cz/u/loga-n4/idnes.svg
div.m-bg-3 > div.m-bg-4 > div.counters > img `div.m-bg-3 > div.m-bg-4 > div.counters > img`	/u/free.gif?r=MiC&p=7g5fOORr%7cZTT4YLXL-4%7cCy0RPxBmLT9gP...

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

●Font display

●LCP breakdown

●LCP request discovery

●Optimize viewport for mobile

●Minify JavaScript

●User Timing marks and measures 8 user timings

●JavaScript execution time 0.9 s

●Avoid long main-thread tasks 6 long tasks found

●Avoid non-composited animations 1 animated element found

●Network Requests

●Network Round Trip Times 50 ms

●Server Backend Latencies 410 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

Accessibility

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 > span#timeetim-_0`
00:00 `div.arts-1 > ul#last-art-newAll > li > span#timeetim-_1`
00:00 `div.arts-1 > ul#last-art-newAll > li > span#timeetim-_2`
00:00 `div.arts-1 > ul#last-art-newAll > li > span#timeetim-_3`
00:00 `div.arts-1 > ul#last-art-newAll > li > span#timeetim-_4`
00:00 `div.arts-1 > ul#last-art-newAll > li > span#timeetim-_5`

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.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`
div.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`
div#widesquare > div#widesquare_wrapper_79068143 > a > img `div#widesquare > div#widesquare_wrapper_79068143 > a > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img `div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a > img `div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a > img`
div.m-bg-2 > div.m-bg-3 > div.m-bg-4 > img `div.m-bg-2 > div.m-bg-3 > div.m-bg-4 > 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
div#branding > div#branding_wrapper_79068143 > div#banner000 > iframe.branding_frame `div#branding > div#branding_wrapper_79068143 > div#banner000 > iframe.branding_frame`

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.r-body > div#widesquare > div#widesquare_wrapper_79068143 > a `div.r-body > div#widesquare > div#widesquare_wrapper_79068143 > a`
div.group-menu > ul > li > a.ico-setting `div.group-menu > ul > li > a.ico-setting`
div#hypertext_2 > div#AdTrackGenericHypertext_2Desktop > div.art > a `div#hypertext_2 > div#AdTrackGenericHypertext_2Desktop > div.art > a`
div#hypertext_5 > div#AdTrackGenericHypertext_5Desktop > div.art > a `div#hypertext_5 > div#AdTrackGenericHypertext_5Desktop > div.art > a`
div.r-body > div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a `div.r-body > div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a`
div#hypertext_4 > div#AdTrackGenericHypertext_4Desktop > div.art > a `div#hypertext_4 > div#AdTrackGenericHypertext_4Desktop > div.art > a`
div#hypertext_3 > div#AdTrackGenericHypertext_3Desktop > div.art > a `div#hypertext_3 > div#AdTrackGenericHypertext_3Desktop > div.art > a`
div.r-body > div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a `div.r-body > div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a`
div.m-bg-4 > div#footer > div.content > a.f-top `div.m-bg-4 > div#footer > div.content > a.f-top`

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

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#votwyrak > div.art > a#assembly-art-0 > h3`
FINANCE `div.group > div.art > div.art-info > h5`
ZPRÁVY `div.arts-row > div.art > div.art-info > h5`
PRAHA `div.arts-row > div.art > div.art-info > h5`
EKONOMIKA `div.arts-row > div.art > div.art-info > h5`
EKONOMIKA `div.arts-row > div.art > div.art-info > h5`
ZPRÁVY `div.arts-row > div.art > div.art-info > h5`
HRY `div.group > div.art > div.art-info > h5`
AUTO `div.arts-row > div.art > div.art-info > h5`
TECHNET `div.arts-row > div.art > div.art-info > h5`
XMAN `div.arts-row > div.art > div.art-info > h5`
ONADNES `div.arts-row > div.art > div.art-info > h5`
BYDLENÍ `div.arts-row > div.art > div.art-info > h5`
HOBBY `div.arts-row > div.art > div.art-info > h5`
BYDLENÍ `div.arts-row > div.art > div.art-info > h5`
REVUE `div.group > div.art > div.art-info > h5`
REVUE `div.arts-row > div.art > div.art-info > h5`
REVUE `div.arts-row > div.art > div.art-info > h5`
OLOMOUC `div.col-a > div.art > div.art-info > h5`
LIBEREC `div.arts-row > div.art > div.art-info > h5`
ONADNES `div.arts-row > div.art > div.art-info > h5`
HBO MAX `div.arts-row > div.art > div.art-info > h5`
E-KNIHA `ul > li > div.art-info > h5`
E-KNIHA `ul > li > div.art-info > h5`
TELEVIZE ZDARMA `ul > li > div.art-info > h5`
FOTBAL `div.group > div.art > div.art-info > h5`
FOTBAL `div.arts-row > div.art > div.art-info > h5`
HOKEJ `div.arts-row > div.art > div.art-info > h5`
FOTBAL `div.arts-row > div.art > div.art-info > h5`
FOTBAL `div.arts-row > div.art > div.art-info > h5`
FOTBAL `div.arts-row > div.art > div.art-info > h5`
EXPRES `div.group > div.art > div.art-info > h5`
JENPROMUŽE `div.arts-row > div.art > div.art-info > h5`
EXPRES `div.arts-row > div.art > div.art-info > h5`
EXPRES `div.arts-row > 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
Toto je nejdražší smartphone z Číny. Můžete k němu mít dvě kabelky příslušenství `div.arts-1 > ul#last-art-newAll > li > a.cell`
Podrobná předpověď počasí `div.cols-sph > div.col-b > div#weather-servis > a.weather-3`
ZPRÁVY `div.art > div.art-info > h5 > a`
PRAHA `div.art > div.art-info > h5 > a`
EKONOMIKA `div.art > div.art-info > h5 > a`
EKONOMIKA `div.art > div.art-info > h5 > a`
ZPRÁVY `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`
HOBBY `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`
LIBEREC `div.art > div.art-info > h5 > a`
ONADNES `div.art > div.art-info > h5 > a`
HBO MAX `div.art > div.art-info > h5 > a`
E-KNIHA `li > div.art-info > h5 > a`
E-KNIHA `li > div.art-info > h5 > a`
TELEVIZE ZDARMA `li > 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`
JENPROMUŽE `div.art > div.art-info > h5 > a`
EXPRES `div.art > div.art-info > h5 > a`
EXPRES `div.art > div.art-info > h5 > a`

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-hidden="true"]` is not present on the document `<body>`

●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-hidden="true"]` elements do not contain focusable descendents

●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

●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

●Document has a main landmark.

●All heading elements contain content.

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

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

○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

○Elements use only permitted ARIA attributes

○`[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

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

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

○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

○`<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>`.

○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.

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
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.

Source	Description
1gr.cz/js/uni/paticka.js?rr=1776765780 line 126, col 7229	`🤑 SAS: Chybející element pozice halfpagead_infinite`
www.idnes.cz/	`Not signed in with the identity provider.`

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

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

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

Crawling and Indexing

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Menu `div.iph-row-in > ul.iph-icolist > li > a.ico-menu`
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.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`
div.art > a.art-link > div.art-img > img `div.art > a.art-link > div.art-img > img`
div#widesquare > div#widesquare_wrapper_79068143 > a > img `div#widesquare > div#widesquare_wrapper_79068143 > a > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img `div#halfpagead_rubrika > div#halfpagead_rubrika_wrapper_79068143 > a > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div.art-img > div > div > img `div.art-img > div > div > img`
div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a > img `div#halfpagead_rubrika_spodni > div#halfpagead_rubrika_spodni_wrapper_79068143 > a > img`
div.m-bg-2 > div.m-bg-3 > div.m-bg-4 > img `div.m-bg-2 > div.m-bg-3 > div.m-bg-4 > 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`

Results for https://idnes.cz

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Usability (1)

Navigation (1)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Names and labels

Navigation

Best practices

Best Practices

General

SEO

Crawling and Indexing

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Names and labels

Navigation

Best practices

Best Practices

General

SEO

Crawling and Indexing

Content Best Practices

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