Využití rádiového spektra (2026-02-15)

Score Calculation

100 − 109 = 0

Severity	Unique types	Weights	Deduction
Critical	2	30 + 19	−49
Serious	9	15 + 10 + 5 + 5 + 5 + 5 + 5 + 5 + 5	−60
Total deduction			−109

Score is based on 11 unique critical and serious issue types. Same issue appearing multiple times counts as one. 48 unique moderate/minor issues are tracked but do not affect the score. Learn more about methodology

Change from previous measurement

0 Critical 6 → 6

0 Serious 60 → 60

0 Total 263 → 263

Page	Critical	Serious	Total
/	0	0	0
kontaktujte-nas	0	0	0

Template structural health

Affected pages:

WCAG 1.4.3

Criterion documentation 1.4.3

Affected pages:

WCAG 2.4.1

Criterion documentation 2.4.1

Affected pages:

Tested Pages

http://spektrum.ctu.cz/

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #frm-searchForm > button

Show HTML

<button type="submit" class="btn search" name="search" value="Vyhledat"><span class="glyphicon glyphico...</button>

Selector: #frm-searchForm > button

Show HTML

<button type="submit" class="btn search" name="search" value="Vyhledat"><span class="glyphicon glyphico...</button>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > p > a

Show HTML

<a data-cc-if="options.link" target="_self" class="cc_more_info" href="http://www.google.com/intl/cs/policies/privacy/partners/">Další informace</a>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > h3 > a

Show HTML

<a href="#help-by-service" data-toggle="modal" data-target="#help-by-service"><span class="glyphicon glyphico...</a>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > h3 > a

Show HTML

<a href="#help-by-application" data-toggle="modal" data-target="#help-by-application"><span class="glyphicon glyphico...</a>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > h3 > a

Show HTML

<a href="#help-by-service" data-toggle="modal" data-target="#help-by-service"><span class="glyphicon glyphico...</a>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > h3 > a

Show HTML

<a href="#help-by-application" data-toggle="modal" data-target="#help-by-application"><span class="glyphicon glyphico...</a>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > h1

Show HTML

<h1>VYUŽITÍ RÁDIOVÉHO SPEKTRA</h1>

Selector: #wrap > div:nth-child(2) > div:nth-child(3) > div > div > h2

Show HTML

<h2>
				<span class="glyphicon gly...</h2>

Selector: #frm-filterForm > div:nth-child(1) > div > h2

Show HTML

<h2>
					<span class="glyphicon gl...</h2>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(1) > div:nth-child(1) > h3

Show HTML

<h3>Dle kmitočtu</h3>

Selector: #slider-min

Show HTML

<div id="slider-min">6&nbsp;kHz</div>

Selector: #slider-max

Show HTML

<div id="slider-max">300&nbsp;GHz</div>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > h3

Show HTML

<h3>Dle služby <a href="#help-by-se...</h3>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > h3

Show HTML

<h3>Dle aplikace <a href="#help-by-...</h3>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button > span:nth-child(1)

Show HTML

<span aria-hidden="true">×</span>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(1)

Show HTML

<p>Tato webová aplikace (dále jen ...</p>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(2)

Show HTML

<p>Závazné úplné podmínky k využív...</p>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(3)

Show HTML

<p>ČTÚ přivítá připomínky uživatel...</p>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div

Show HTML

<div class="text-left">
						© <a href="http://www.ct...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div > a

Show HTML

<a href="http://www.ctu.cz/">Český telekomunikační úřad</a>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div

Show HTML

<div class="text-right">
						Poslední aktualizace:  <...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div > span

Show HTML

<span title="30. 1. 2026 11:13:38">30. 1. 2026</span>

WCAG 2.4.1

Criterion documentation 2.4.1

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #frm-searchForm-q

Show HTML

<input type="search" class="input-with-btn ui-autocomplete-input" autocomplete="off" placeholder="zadejte klíčové slovo" name="q" id="frm-searchForm-q" required="" data-nette-rules="[{&quot;op&quot;:&quot;:filled&quot;,&quot;msg&quot;:&quot;Vyplňte, ...

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(1) > div:nth-child(2) > h3

Show HTML

<h3>&nbsp;</h3>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #input-min

Show HTML

<input type="text" name="frequencyFrom" id="input-min" class="input-full" placeholder="od">

Selector: #input-max

Show HTML

<input type="text" name="frequencyTo" id="input-max" class="input-full" placeholder="do">

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #input-min

Show HTML

<input type="text" name="frequencyFrom" id="input-min" class="input-full" placeholder="od">

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #input-max

Show HTML

<input type="text" name="frequencyTo" id="input-max" class="input-full" placeholder="do">

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

Issues not affecting score

These are often not errors but recommendations that require manual review. They may indicate potential accessibility barriers that automated testing cannot fully evaluate.

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

Selector: html > body > div:nth-child(1) > div > p

Show HTML

<p class="cc_message">K analýze návštěvnosti webu vyu...</p>

Selector: html > body > div:nth-child(3)

Show HTML

<div class="jumbotron footer panel-footer ">
		<div class="container">
			<...</div>

WCAG 1.4.10

Criterion documentation 1.4.10

Technique description (EN)

Selector: html > body > div:nth-child(1) > div

Show HTML

<div class="cc_banner cc_container cc_container--open"><a href="#null" data-cc-event="...</div>

Selector: #disclaimer

Show HTML

<div class="modal fade in" id="disclaimer" tabindex="-1" role="dialog" aria-labelledby="disclaimerLabel" aria-hidden="false" style="display: block; padding-right: 0px;"><div class="modal-backdrop fade...</div>

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: html > body > div:nth-child(1) > div

Show HTML

<div class="cc_banner cc_container cc_container--open"><a href="#null" data-cc-event="...</div>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1)

Show HTML

<div class="col-sm-4">
				<a href="/kmitocty?filter%...</div>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2)

Show HTML

<div class="col-sm-4">
				<a href="/kmitocty?filter%...</div>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3)

Show HTML

<div class="col-sm-4">
				<a href="/kmitocty?filter%...</div>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > h1

Show HTML

<h1>VYUŽITÍ RÁDIOVÉHO SPEKTRA</h1>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > div:nth-child(3) > div > div > h2

Show HTML

<h2>
				<span class="glyphicon gly...</h2>

Selector: #frm-filterForm > div:nth-child(1) > div > h2

Show HTML

<h2>
					<span class="glyphicon gl...</h2>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(1) > div:nth-child(1) > h3

Show HTML

<h3>Dle kmitočtu</h3>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > h3

Show HTML

<h3>Dle služby <a href="#help-by-se...</h3>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > h3

Show HTML

<h3>Dle aplikace <a href="#help-by-...</h3>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #slider-min

Show HTML

<div id="slider-min">6&nbsp;kHz</div>

Selector: #slider-max

Show HTML

<div id="slider-max">300&nbsp;GHz</div>

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

WCAG 4.1.2

Criterion documentation 4.1.2

Technique description (EN)

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button > span:nth-child(2)

Show HTML

<span class="sr-only">Zavřít</span>

WCAG 2.4.6

Criterion documentation 2.4.6

Technique description (EN)

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(1) > div:nth-child(2) > h3

Show HTML

<h3>&nbsp;</h3>

WCAG 2.4.2

Criterion documentation 2.4.2

Technique description (EN)

Selector: html > head > title

Show HTML

<title>VYUŽITÍ RÁDIOVÉHO SPEKTRA
</title>

WCAG 2.4.4

Criterion documentation 2.4.4

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

Selector: html > body > div:nth-child(1) > div > p > a

Show HTML

<a data-cc-if="options.link" target="_self" class="cc_more_info" href="http://www.google.com/intl/cs/policies/privacy/partners/">Další informace</a>

Selector: html > body > div:nth-child(1) > div > a:nth-child(3)

Show HTML

<a class="cc_logo" target="_blank" href="http://silktide.com/cookieconsent">Cookie Consent plugin for the E...</a>

Selector: #wrap > nav > div > div:nth-child(1) > a

Show HTML

<a class="navbar-brand" href="/"><img src="/data/layout/logo_cs....</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(1) > a

Show HTML

<a href="/">Domů</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(2) > a

Show HTML

<a href="/stranka/vyuziti-radioveho-spektra">O aplikaci</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(3) > a

Show HTML

<a href="/vypocty">Výpočty</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(4) > a

Show HTML

<a href="/stranka/zkratky-a-vysvetlivky">Slovníček</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(5) > a

Show HTML

<a href="/stranka/otevrena-data-ctu">Otevřená data</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(6) > a

Show HTML

<a href="/stranka/kontaktujte-nas">Kontakt</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(1)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=72&amp;filter%5BapplicationIds%5D%5B1%5D=177" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(2)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=116&amp;filter%5BapplicationIds%5D%5B1%5D=157&amp;filter%5BapplicationIds%5D%5B2%5D=175" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(3)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=79&amp;filter%5BapplicationIds%5D%5B1%5D=93" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(1)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=34" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(2)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=47" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(3)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=30" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(1)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=174&amp;filter%5BapplicationIds%5D%5B1%5D=176" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(2)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=27" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(3)

Show HTML

<a href="/kmitocty?filter%5BapplicationIds%5D%5B0%5D=84&amp;filter%5BapplicationIds%5D%5B1%5D=85" class="pulse"><img src="/data/layout/piktogra...</a>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > h3 > a

Show HTML

<a href="#help-by-service" data-toggle="modal" data-target="#help-by-service"><span class="glyphicon glyphico...</a>

Selector: #frm-filterForm > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > h3 > a

Show HTML

<a href="#help-by-application" data-toggle="modal" data-target="#help-by-application"><span class="glyphicon glyphico...</a>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div > a

Show HTML

<a href="http://www.ctu.cz/">Český telekomunikační úřad</a>

WCAG 3.2.1

Criterion documentation 3.2.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > button

Show HTML

<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
					<span class="sr-only">Ote...</button>

Selector: #frm-searchForm-q

Show HTML

<input type="search" class="input-with-btn ui-autocomplete-input" autocomplete="off" placeholder="zadejte klíčové slovo" name="q" id="frm-searchForm-q" required="" data-nette-rules="[{&quot;op&quot;:&quot;:filled&quot;,&quot;msg&quot;:&quot;Vyplňte, ...

Selector: #frm-searchForm > button

Show HTML

<button type="submit" class="btn search" name="search" value="Vyhledat"><span class="glyphicon glyphico...</button>

Selector: #input-min

Show HTML

<input type="text" name="frequencyFrom" id="input-min" class="input-full" placeholder="od">

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #input-max

Show HTML

<input type="text" name="frequencyTo" id="input-max" class="input-full" placeholder="do">

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

Selector: #frm-filterForm > div:nth-child(3) > div > button

Show HTML

<button type="submit" class="btn-filter" name="filter" value="Filtrovat"><span class="glyphicon glyphico...</button>

Selector: #frm-filterForm > input

Show HTML

<input type="hidden" name="do" value="filterForm-submit">

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button

Show HTML

<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</spa...</button>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(3) > button

Show HTML

<button type="button" class="agreeBtn" data-dismiss="modal" style="width: 140px;">ROZUMÍM</button>

WCAG 1.1.1

Criterion documentation 1.1.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > a > img

Show HTML

<img src="/data/layout/logo_cs.png" alt="Logo ČTÚ" width="98" height="53">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_1_cs.png" class="img-responsive" alt="Ikona vysílače signálu přesného času">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_2_cs.png" class="img-responsive" alt="Ikona ovládání modelů">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_3_cs.png" class="img-responsive" alt="Ikona rozhlasu">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_4_cs.png" class="img-responsive" alt="Ikona vysílaček">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_5_cs.png" class="img-responsive" alt="Ikona televize">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_6_cs.png" class="img-responsive" alt="Ikona mobilního telefonu">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_7_cs.png" class="img-responsive" alt="Ikona navigace">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_8_cs.png" class="img-responsive" alt="Ikona WiFi">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_9_cs.png" class="img-responsive" alt="Ikona družicové televize">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > img

Show HTML

<img src="/data/layout/vlna_cs.png" class="img-responsive" alt="Vlnové délky rádiového spektra">

WCAG 1.1.1

Criterion documentation 1.1.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > a > img

Show HTML

<img src="/data/layout/logo_cs.png" alt="Logo ČTÚ" width="98" height="53">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_1_cs.png" class="img-responsive" alt="Ikona vysílače signálu přesného času">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_2_cs.png" class="img-responsive" alt="Ikona ovládání modelů">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(1) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_3_cs.png" class="img-responsive" alt="Ikona rozhlasu">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_4_cs.png" class="img-responsive" alt="Ikona vysílaček">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_5_cs.png" class="img-responsive" alt="Ikona televize">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(2) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_6_cs.png" class="img-responsive" alt="Ikona mobilního telefonu">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(1) > img

Show HTML

<img src="/data/layout/piktogram_7_cs.png" class="img-responsive" alt="Ikona navigace">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(2) > img

Show HTML

<img src="/data/layout/piktogram_8_cs.png" class="img-responsive" alt="Ikona WiFi">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div > div:nth-child(3) > a:nth-child(3) > img

Show HTML

<img src="/data/layout/piktogram_9_cs.png" class="img-responsive" alt="Ikona družicové televize">

Selector: #wrap > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > img

Show HTML

<img src="/data/layout/vlna_cs.png" class="img-responsive" alt="Vlnové délky rádiového spektra">

WCAG 2.4.4

Criterion documentation 2.4.4

Technique description (EN)

Selector: #locales > li > a

Show HTML

<a class="en" title="EN" href="/en/"></a>

WCAG 3.3.1

Criterion documentation 3.3.1

Technique description (EN)

Selector: #frm-searchForm

Show HTML

<form action="/hledat/" method="get" id="frm-searchForm" class="searchForm" novalidate="">
				<input type="search" class...</form>

Selector: #frm-filterForm

Show HTML

<form action="/" method="post" id="frm-filterForm" novalidate="">
		<!-- title row  -->
		<div c...</form>

WCAG 3.3.2

Criterion documentation 3.3.2

Technique description (EN)

Selector: #frm-searchForm

Show HTML

<form action="/hledat/" method="get" id="frm-searchForm" class="searchForm" novalidate="">
				<input type="search" class...</form>

Selector: #frm-filterForm

Show HTML

<form action="/" method="post" id="frm-filterForm" novalidate="">
		<!-- title row  -->
		<div c...</form>

WCAG 3.3.3

Criterion documentation 3.3.3

Technique description (EN)

Selector: #frm-searchForm

Show HTML

<form action="/hledat/" method="get" id="frm-searchForm" class="searchForm" novalidate="">
				<input type="search" class...</form>

Selector: #frm-filterForm

Show HTML

<form action="/" method="post" id="frm-filterForm" novalidate="">
		<!-- title row  -->
		<div c...</form>

WCAG 3.3.4

Criterion documentation 3.3.4

Technique description (EN)

Selector: #frm-searchForm

Show HTML

<form action="/hledat/" method="get" id="frm-searchForm" class="searchForm" novalidate="">
				<input type="search" class...</form>

Selector: #frm-filterForm

Show HTML

<form action="/" method="post" id="frm-filterForm" novalidate="">
		<!-- title row  -->
		<div c...</form>

WCAG 1.3.5

Criterion documentation 1.3.5

Technique description (EN)

Selector: #frm-searchForm-q

Show HTML

<input type="search" class="input-with-btn ui-autocomplete-input" autocomplete="off" placeholder="zadejte klíčové slovo" name="q" id="frm-searchForm-q" required="" data-nette-rules="[{&quot;op&quot;:&quot;:filled&quot;,&quot;msg&quot;:&quot;Vyplňte, ...

Selector: #input-min

Show HTML

<input type="text" name="frequencyFrom" id="input-min" class="input-full" placeholder="od">

Selector: #input-min

Show HTML

<input type="text" name="frequencyFrom" id="input-min" class="input-full" placeholder="od">

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #lselectdec

Show HTML

<select name="frequencyFromUnit" id="lselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #input-max

Show HTML

<input type="text" name="frequencyTo" id="input-max" class="input-full" placeholder="do">

Selector: #input-max

Show HTML

<input type="text" name="frequencyTo" id="input-max" class="input-full" placeholder="do">

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #hselectdec

Show HTML

<select name="frequencyToUnit" id="hselectdec" class="input-full"><option value="kHz" selected=""...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-serviceId

Show HTML

<select name="serviceId" id="frm-filterForm-serviceId" class="input-full"><option value="">vyberte službu...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

Selector: #frm-filterForm-applicationId

Show HTML

<select name="applicationId" id="frm-filterForm-applicationId" class="input-full"><option value="">vyberte aplika...</select>

Selector: #frm-filterForm > input

Show HTML

<input type="hidden" name="do" value="filterForm-submit">

WCAG 1.3.2

Criterion documentation 1.3.2

Technique description (EN)

WCAG 1.3.3

Criterion documentation 1.3.3

Technique description (EN)

WCAG 1.3.4

Criterion documentation 1.3.4

WCAG 1.4.1

Criterion documentation 1.4.1

Technique description (EN)

WCAG 1.4.4

Criterion documentation 1.4.4

Technique description (EN)

WCAG 1.4.5

Criterion documentation 1.4.5

Technique description (EN)

WCAG 1.4.11

Criterion documentation 1.4.11

Technique description (EN)

WCAG 1.4.12

Criterion documentation 1.4.12

Technique description (EN)

WCAG 1.4.13

Criterion documentation 1.4.13

Technique description (EN)

WCAG 2.1.4

Criterion documentation 2.1.4

WCAG 2.2.2

Criterion documentation 2.2.2

Technique description (EN)

WCAG 2.3.1

Criterion documentation 2.3.1

Technique description (EN)

WCAG 2.4.1

Criterion documentation 2.4.1

Technique description (EN)

WCAG 2.4.3

Criterion documentation 2.4.3

Technique description (EN)

WCAG 2.4.5

Criterion documentation 2.4.5

Technique description (EN)

WCAG 2.4.6

Criterion documentation 2.4.6

Technique description (EN)

WCAG 2.4.7

Criterion documentation 2.4.7

Technique description (EN)

WCAG 2.5.1

Criterion documentation 2.5.1

WCAG 2.5.2

Criterion documentation 2.5.2

WCAG 2.5.3

Criterion documentation 2.5.3

Technique description (EN)

WCAG 2.5.4

Criterion documentation 2.5.4

WCAG 3.1.2

Criterion documentation 3.1.2

Technique description (EN)

WCAG 3.2.3

Criterion documentation 3.2.3

Technique description (EN)

WCAG 3.2.4

Criterion documentation 3.2.4

Technique description (EN)

WCAG 4.1.3

Criterion documentation 4.1.3

http://spektrum.ctu.cz/stranka/kontaktujte-nas

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div

Show HTML

<div class="text-left">
						© <a href="http://www.ct...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div > a

Show HTML

<a href="http://www.ctu.cz/">Český telekomunikační úřad</a>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div

Show HTML

<div class="text-right">
						Poslední aktualizace:  <...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div > span

Show HTML

<span title="30. 1. 2026 11:13:38">30. 1. 2026</span>

Selector: #wrap > div:nth-child(2) > h1

Show HTML

<h1>KONTAKT</h1>

Selector: #wrap > div:nth-child(2) > div > div > div > h2

Show HTML

<h2>Kontaktujte nás</h2>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(2)

Show HTML

<p>Podělte se s námi o své připomí...</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(2) > a

Show HTML

<a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ctu.cz%2Fkontaktni-formular&amp;data=05%7C01%7C%7C9b31d1f97d294b3f233608dabca597b1%7C399ef872a5be47ceb5538b9154e909cc%7C0%7C0%7C638029716634997209%7CUnknown%7CTWFpbGZsb3d8...

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(3)

Show HTML

<p>Děkujeme za Váš zájem.</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(5) > a

Show HTML

<a href="https://www.ctu.cz/kontaktni-formular">Máte dotaz? Kontaktujte nás | Č...</a>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6)

Show HTML

<p><br> <strong>Poštovní adresa</s...</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(2)

Show HTML

<strong>Poštovní adresa</strong>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(8)

Show HTML

<strong>Telefon:</strong>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(10)

Show HTML

<strong>Fax:</strong>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button > span:nth-child(1)

Show HTML

<span aria-hidden="true">×</span>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(1)

Show HTML

<p>Tato webová aplikace (dále jen ...</p>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(2)

Show HTML

<p>Závazné úplné podmínky k využív...</p>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(2) > p:nth-child(3)

Show HTML

<p>ČTÚ přivítá připomínky uživatel...</p>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div

Show HTML

<div class="text-left">
						© <a href="http://www.ct...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div > a

Show HTML

<a href="http://www.ctu.cz/">Český telekomunikační úřad</a>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div

Show HTML

<div class="text-right">
						Poslední aktualizace:  <...</div>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(2) > div > span

Show HTML

<span title="30. 1. 2026 11:13:38">30. 1. 2026</span>

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > p > a

Show HTML

<a data-cc-if="options.link" target="_self" class="cc_more_info" href="http://www.google.com/intl/cs/policies/privacy/partners/">Další informace</a>

WCAG 2.4.1

Criterion documentation 2.4.1

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

Issues not affecting score

These are often not errors but recommendations that require manual review. They may indicate potential accessibility barriers that automated testing cannot fully evaluate.

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: #disclaimerLabel

Show HTML

<h4 class="modal-title" id="disclaimerLabel">Informace pro návštěvníky</h4>

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

Selector: html > body > div:nth-child(1) > div > p

Show HTML

<p class="cc_message">K analýze návštěvnosti webu vyu...</p>

Selector: html > body > div:nth-child(3)

Show HTML

<div class="jumbotron footer panel-footer ">
		<div class="container">
			<...</div>

WCAG 1.4.10

Criterion documentation 1.4.10

Technique description (EN)

Selector: html > body > div:nth-child(1) > div

Show HTML

<div class="cc_banner cc_container cc_container--open"><a href="#null" data-cc-event="...</div>

Selector: #disclaimer

Show HTML

<div class="modal fade in" id="disclaimer" tabindex="-1" role="dialog" aria-labelledby="disclaimerLabel" aria-hidden="false" style="display: block; padding-right: 0px;"><div class="modal-backdrop fade...</div>

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: html > body > div:nth-child(1) > div

Show HTML

<div class="cc_banner cc_container cc_container--open"><a href="#null" data-cc-event="...</div>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > h1

Show HTML

<h1>KONTAKT</h1>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > div > div > div > h2

Show HTML

<h2>Kontaktujte nás</h2>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(2)

Show HTML

<p>Podělte se s námi o své připomí...</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(2) > a

Show HTML

<a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ctu.cz%2Fkontaktni-formular&amp;data=05%7C01%7C%7C9b31d1f97d294b3f233608dabca597b1%7C399ef872a5be47ceb5538b9154e909cc%7C0%7C0%7C638029716634997209%7CUnknown%7CTWFpbGZsb3d8...

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(3)

Show HTML

<p>Děkujeme za Váš zájem.</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(5) > a

Show HTML

<a href="https://www.ctu.cz/kontaktni-formular">Máte dotaz? Kontaktujte nás | Č...</a>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6)

Show HTML

<p><br> <strong>Poštovní adresa</s...</p>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(2)

Show HTML

<strong>Poštovní adresa</strong>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(8)

Show HTML

<strong>Telefon:</strong>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(6) > strong:nth-child(10)

Show HTML

<strong>Fax:</strong>

WCAG 1.4.3

Criterion documentation 1.4.3

Technique description (EN)

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button > span:nth-child(2)

Show HTML

<span class="sr-only">Zavřít</span>

WCAG 1.3.1

Criterion documentation 1.3.1

Technique description (EN)

Selector: #disclaimerLabel

Show HTML

<h4 class="modal-title" id="disclaimerLabel">Informace pro návštěvníky</h4>

WCAG 2.4.2

Criterion documentation 2.4.2

Technique description (EN)

Selector: html > head > title

Show HTML

<title>KONTAKT
</title>

WCAG 2.4.4

Criterion documentation 2.4.4

Technique description (EN)

Selector: html > body > div:nth-child(1) > div > a:nth-child(1)

Show HTML

<a href="#null" data-cc-event="click:dismiss" target="_blank" class="cc_btn cc_btn_accept_all">Rozumím!</a>

Selector: html > body > div:nth-child(1) > div > p > a

Show HTML

<a data-cc-if="options.link" target="_self" class="cc_more_info" href="http://www.google.com/intl/cs/policies/privacy/partners/">Další informace</a>

Selector: html > body > div:nth-child(1) > div > a:nth-child(3)

Show HTML

<a class="cc_logo" target="_blank" href="http://silktide.com/cookieconsent">Cookie Consent plugin for the E...</a>

Selector: #wrap > nav > div > div:nth-child(1) > a

Show HTML

<a class="navbar-brand" href="/"><img src="/data/layout/logo_cs....</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(1) > a

Show HTML

<a href="/">Domů</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(2) > a

Show HTML

<a href="/stranka/vyuziti-radioveho-spektra">O aplikaci</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(3) > a

Show HTML

<a href="/vypocty">Výpočty</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(4) > a

Show HTML

<a href="/stranka/zkratky-a-vysvetlivky">Slovníček</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(5) > a

Show HTML

<a href="/stranka/otevrena-data-ctu">Otevřená data</a>

Selector: #navbar > ul:nth-child(2) > li:nth-child(6) > a

Show HTML

<a href="/stranka/kontaktujte-nas">Kontakt</a>

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(2) > a

Show HTML

<a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ctu.cz%2Fkontaktni-formular&amp;data=05%7C01%7C%7C9b31d1f97d294b3f233608dabca597b1%7C399ef872a5be47ceb5538b9154e909cc%7C0%7C0%7C638029716634997209%7CUnknown%7CTWFpbGZsb3d8...

Selector: #wrap > div:nth-child(2) > div > div > div > p:nth-child(5) > a

Show HTML

<a href="https://www.ctu.cz/kontaktni-formular">Máte dotaz? Kontaktujte nás | Č...</a>

Selector: html > body > div:nth-child(3) > div > div > div:nth-child(1) > div > a

Show HTML

<a href="http://www.ctu.cz/">Český telekomunikační úřad</a>

WCAG 3.2.1

Criterion documentation 3.2.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > button

Show HTML

<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
					<span class="sr-only">Ote...</button>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(1) > button

Show HTML

<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</spa...</button>

Selector: #disclaimer > div:nth-child(2) > div > div:nth-child(3) > button

Show HTML

<button type="button" class="agreeBtn" data-dismiss="modal" style="width: 140px;">ROZUMÍM</button>

WCAG 1.1.1

Criterion documentation 1.1.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > a > img

Show HTML

<img src="/data/layout/logo_cs.png" alt="Logo ČTÚ" width="98" height="53">

WCAG 1.1.1

Criterion documentation 1.1.1

Technique description (EN)

Selector: #wrap > nav > div > div:nth-child(1) > a > img

Show HTML

<img src="/data/layout/logo_cs.png" alt="Logo ČTÚ" width="98" height="53">

WCAG 2.4.4

Criterion documentation 2.4.4

Technique description (EN)

Selector: #locales > li > a

Show HTML

<a class="en" title="EN" href="/en/page/contact-us"></a>

WCAG 1.3.2

Criterion documentation 1.3.2

Technique description (EN)

WCAG 1.3.3

Criterion documentation 1.3.3

Technique description (EN)

WCAG 1.3.4

Criterion documentation 1.3.4

WCAG 1.4.1

Criterion documentation 1.4.1

Technique description (EN)

WCAG 1.4.4

Criterion documentation 1.4.4

Technique description (EN)

WCAG 1.4.5

Criterion documentation 1.4.5

Technique description (EN)

WCAG 1.4.11

Criterion documentation 1.4.11

Technique description (EN)

WCAG 1.4.12

Criterion documentation 1.4.12

Technique description (EN)

WCAG 1.4.13

Criterion documentation 1.4.13

Technique description (EN)

WCAG 2.1.4

Criterion documentation 2.1.4

WCAG 2.2.2

Criterion documentation 2.2.2

Technique description (EN)

WCAG 2.3.1

Criterion documentation 2.3.1

Technique description (EN)

WCAG 2.4.1

Criterion documentation 2.4.1

Technique description (EN)

WCAG 2.4.3

Criterion documentation 2.4.3

Technique description (EN)

WCAG 2.4.5

Criterion documentation 2.4.5

Technique description (EN)

WCAG 2.4.6

Criterion documentation 2.4.6

Technique description (EN)

WCAG 2.4.7

Criterion documentation 2.4.7

Technique description (EN)

WCAG 2.5.1

Criterion documentation 2.5.1

WCAG 2.5.2

Criterion documentation 2.5.2

WCAG 2.5.3

Criterion documentation 2.5.3

Technique description (EN)

WCAG 2.5.4

Criterion documentation 2.5.4

WCAG 3.1.2

Criterion documentation 3.1.2

Technique description (EN)

WCAG 3.2.3

Criterion documentation 3.2.3

Technique description (EN)

WCAG 3.2.4

Criterion documentation 3.2.4

Technique description (EN)

WCAG 4.1.3

Criterion documentation 4.1.3

Využití rádiového spektra (2026-02-15)

Score Calculation

Change from previous measurement

Change per page

Template structural health

Recurring issues across pages 3 ×

Serious — Links must be distinguishable without relying on color

Serious — Elements must meet minimum color contrast ratio thresholds

Serious — Link points to missing anchor

Tested Pages

http://spektrum.ctu.cz/

Critical

Buttons must have discernible text

Select element must have an accessible name

Serious

Links must be distinguishable without relying on color

Links must have discernible text

Elements must meet minimum color contrast ratio thresholds

Link points to missing anchor

Search input missing accessible name

Heading tag found with no content. Text that is not intended as a heading should not be marked up with heading tags.

Text input missing accessible name

Form field missing label

Select element missing accessible name

Issues not affecting score

Moderate

All page content should be contained by landmarks

Check reflow without horizontal scroll

Navigation should be marked as list

Check contrast large text (background image)

This element's text or background contains transparency. Ensure the contrast ratio between the text and background are at least 3:1.

Check contrast (transparency)

If this selection list contains groups of related options, they should be grouped with optgroup.

This select element does not have a value available to an accessibility API.

Check contrast large text (absolute positioning)

Minor

Headings should not be empty

Check page title describes content

Link purpose unclear from context

Check no context change on focus

Check image alt text accuracy

Image may need long text alternative

Link purpose unclear from context

Check error identification

Check labels or instructions

Check error suggestions provided

Check error prevention for legal/financial

Check autocomplete attribute

Check meaningful sequence

Check sensory characteristics

Check display orientation

Check color is not only cue

Check text resize to 200%

Check images of text

Check non-text contrast

Check text spacing adjustability

Check content on hover/focus

Check character key shortcuts

Check pause/stop/hide for moving content

Check for flashing content

Check bypass blocks mechanism

If tabindex is used, check that the tab order specified by the tabindex attributes follows relationships in the content.

Check multiple ways to find page

Check headings and labels describe purpose

Check focus is visible

Check pointer gestures alternatives

Check pointer cancellation

Accessible name missing visible label

Check motion actuation alternatives

Check language of parts

Check consistent navigation

Check consistent identification

Check status messages accessibility

http://spektrum.ctu.cz/stranka/kontaktujte-nas

Serious

Elements must meet minimum color contrast ratio thresholds

Links must be distinguishable without relying on color

Link points to missing anchor

Issues not affecting score

Moderate