{"id":3180,"date":"2021-08-23T06:39:25","date_gmt":"2021-08-23T04:39:25","guid":{"rendered":"http:\/\/wptest.nexum.cz\/core-web-vitals-co-znamenaji-a-jak-s-nimi-pracovat\/"},"modified":"2023-10-17T11:37:50","modified_gmt":"2023-10-17T09:37:50","slug":"core-web-vitals-co-znamenaji-a-jak-s-nimi-pracovat","status":"publish","type":"post","link":"https:\/\/www.webmium.cz\/blog\/core-web-vitals-co-znamenaji-a-jak-s-nimi-pracovat\/","title":{"rendered":"Core Web Vitals: Co znamenaj\u00ed a jak s nimi pracovat?"},"content":{"rendered":"<h3>Co se skr\u00fdv\u00e1 pod pojmem Core Web Vitals?<\/h3>\n<p>\tSoubor metrik, kter\u00fd nov\u011b za\u010dal Google ozna\u010dovat jako m\u00edru u\u017eivatelsk\u00e9 p\u0159\u00edv\u011btivosti p\u0159i pou\u017e\u00edv\u00e1n\u00ed webov\u00fdch str\u00e1nek, je bal\u00ed\u010dek obsahuj\u00edc\u00ed metriky CLS, LCP a FID. Ve zkratce CLS je tzv. kumulativn\u00ed posun layoutu (Cumulative Layout Shift), metrika vyjad\u0159uj\u00edc\u00ed vizu\u00e1ln\u00ed stabilitu p\u0159i na\u010d\u00edt\u00e1n\u00ed, respektive vykreslov\u00e1n\u00ed str\u00e1nky. LCP (Largest Contentful Paint) zn\u00e1zor\u0148uje nejv\u011bt\u0161\u00ed vykreslen\u00ed hlavn\u00edho obsahu, tedy \u010d\u00edm d\u0159\u00edve se n\u00e1v\u0161t\u011bvn\u00edk\u016fm hlavn\u00ed obsah na\u010dte, t\u00edm l\u00e9pe. FID (First Input Delay) je prodleva prvn\u00edho vstupu. Je to doba, kdy m\u016f\u017ee n\u00e1v\u0161t\u011bvn\u00edk prov\u00e9st prvn\u00ed interakci na webu. V\u0161echny t\u0159i metriky pak podl\u00e9haj\u00ed hodnocen\u00ed samotn\u00e9ho Google ve t\u0159ech t\u0159\u00edd\u00e1ch. Good (Spl\u0148uje krit\u00e9ria), Need Improvements (Vy\u017eadov\u00e1no zlep\u0161en\u00ed) a Poor (Metrika je na tom \u0161patn\u011b). N\u00ed\u017ee je p\u0159ehledn\u00e1 tabulka limit\u016f:<\/p>\n<figure class=\"w-richtext-figure-type-image w-richtext-align-fullwidth\" style=\"max-width:737px\" data-rt-type=\"image\" data-rt-align=\"fullwidth\" data-rt-max-width=\"737px\">\n<div><img decoding=\"async\" src=\"https:\/\/uploads-ssl.webflow.com\/5767b4eb3a9c9e1015d06770\/6123408e63a496208f11c9ff_mNWu3N3WcdzOo5nvaWuYFIis7iecY6VxEHsKH3ST_7CkPnoQaE6LFNSHnyMr9OqotPGXZ3xjhgsaOberAApnbe6rHXpjD00myp2lfn98-nvGtScG_XzEm14fMHJB7eT-ZW7ki7sw.png\" width=\"auto\" height=\"auto\" loading=\"auto\" alt=\"core web vitals\"><\/div>\n<\/figure>\n<p><\/p>\n<figure class=\"w-richtext-figure-type-image w-richtext-align-fullwidth\" style=\"max-width:1296px\" data-rt-type=\"image\" data-rt-align=\"fullwidth\" data-rt-max-width=\"1296px\">\n<div><img decoding=\"async\" src=\"https:\/\/uploads-ssl.webflow.com\/5767b4eb3a9c9e1015d06770\/6123403e78651dd572be4e23_Gv6POF57M-jHvcSDho9qCNLygzf-LA-PwzsOLfoeJuvwAqOt3XCuixQ5aSPDjYWpamlG-nX0j7eeI1VeGrb9Usuudvpx0p9uXR3FDCeHerJOTmMosSKqurNzAZX0poD9ZpEXOfpa.jpeg\" width=\"auto\" height=\"auto\" loading=\"auto\" alt=\"core web vitals\"><\/div>\n<\/figure>\n<h3>Core Web Vitals a jejich vliv na vyhled\u00e1v\u00e1n\u00ed<\/h3>\n<p>\tGoogle za\u010dal tento rok v pr\u016fb\u011bhu kv\u011btna a\u017e \u010dervna pomalu nasazovat \u00fapravu algoritmu, kter\u00fd m\u00e1 za \u00fakol po\u010d\u00edtat hodnocen\u00ed str\u00e1nek, kter\u00e9 se pokou\u0161ej\u00ed um\u00edstit v SERPu (ve v\u00fdsledc\u00edch vyhled\u00e1v\u00e1n\u00ed). Ji\u017e n\u011bjakou dobu Google pozitivn\u011b hodnot\u00ed webov\u00e9 prezentace, kter\u00e9 zohled\u0148uj\u00ed kvalitu proch\u00e1zen\u00ed str\u00e1nek na mobiln\u00edch za\u0159\u00edzen\u00edch. To se pak odr\u00e1\u017eelo v lep\u0161\u00edm hodnocen\u00ed a kvalitn\u011bj\u0161\u00edmu z\u00e1\u017eitku pro u\u017eivatele.\u00a0<\/p>\n<p>Nyn\u00ed tento \u201cmobile first\u201d p\u0159\u00edstup ohrani\u010dil konkr\u00e9tn\u00edmi metrikami a jejich limity, kter\u00e9 by m\u011bly \u00fasp\u011b\u0161n\u00e9 weby spl\u0148ovat. Samoz\u0159ejm\u011b to nen\u00ed st\u011b\u017eejn\u00ed a jedin\u00e1 metrika, kter\u00e1 by radik\u00e1ln\u011b ovlivnila celkov\u00e9 hodnocen\u00ed. St\u00e1le je pot\u0159eba splnit celou \u0159adu dal\u0161\u00edch hodnot\u00edc\u00edch krit\u00e9ri\u00ed. Core Web Vitals jsou tak jen dal\u0161\u00edm d\u00edlem do skl\u00e1da\u010dky. Mimo hodnocen\u00ed ze strany Google ale vylad\u011bn\u00e9 proch\u00e1zen\u00ed webu na mobiln\u00edch za\u0159\u00edzen\u00edch pozitivn\u011b p\u016fsob\u00ed na p\u0159\u00edv\u011btivost a udr\u017euje n\u00e1v\u0161t\u011bvn\u00edky na str\u00e1nk\u00e1ch.<\/p>\n<h3>Kde Core Web Vitals m\u011b\u0159it?<\/h3>\n<p>\tProvozovatel\u00e9 webov\u00fdch str\u00e1nek maj\u00ed hned n\u011bkolik mo\u017enost\u00ed, jak metriky m\u011b\u0159it.<\/p>\n<ul>\n<li><a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/?hl=cs\">PageSpeed Insights<\/a>: Ofici\u00e1ln\u00ed n\u00e1stroj od Google pro rychl\u00e9 jednor\u00e1zov\u00e9 m\u011b\u0159en\u00ed. Metriky Core Web Vitals najdete v \u201cData pole\u201d.<\/li>\n<li><a href=\"https:\/\/search.google.com\/search-console\/welcome\">Google Search Console<\/a>: Komplexn\u00ed n\u00e1stroj pro monitoring webov\u00fdch str\u00e1nek nov\u011b ukazuje v administraci i samostatnou polo\u017eku speci\u00e1ln\u011b pro Core Web Vitals.<\/li>\n<li><a href=\"https:\/\/chrome.google.com\/webstore\/detail\/web-vitals\/ahfhijdlegdabablpippeagghigmibma?hl=en\">Web Vitals<\/a>: Dopln\u011bk p\u0159\u00edmo pro V\u00e1\u0161 prohl\u00ed\u017ee\u010d Chrome. Rychl\u00fd a jednoduch\u00fd test aktu\u00e1ln\u011b nav\u0161t\u00edven\u00e9 str\u00e1nky.\t<\/li>\n<\/ul>\n<h3>Jak metriky Core Web Vitals optimalizovat?<\/h3>\n<h4>Optimalizace LCP<\/h4>\n<ul>\n<li>Vhodn\u00fd v\u00fdb\u011br serverov\u00e9ho \u0159e\u0161en\u00ed.<\/li>\n<li>Vyu\u017eit\u00ed CDN ve v\u0161ech p\u0159\u00edpadech, kde je to nutn\u00e9.<\/li>\n<li>Ukl\u00e1d\u00e1n\u00ed vyu\u017e\u00edvan\u00fdch asset\u016f do mezipam\u011bti.<\/li>\n<li>Ide\u00e1ln\u011b p\u0159edkl\u00e1dat u\u017eivatel\u016fm generovan\u00e9 HTML str\u00e1nky ji\u017e nahran\u00e9 v mezipam\u011bti.<\/li>\n<li>Na\u010d\u00edtejte obsah t\u0159et\u00edch stran efektivn\u011b.<\/li>\n<li>P\u0159i na\u010d\u00edt\u00e1n\u00ed webu spou\u0161t\u011bjte jen nutn\u00fd Javascript a styly.<\/li>\n<li>Minifikujte zdrojov\u00e9 k\u00f3dy.<\/li>\n<\/ul>\n<h4>Optimalizace FID<\/h4>\n<ul>\n<li>Rozd\u011blte Javascriptov\u00e9 \u00falohy do men\u0161\u00edch, krat\u0161\u00edch \u00fasek\u016f.<\/li>\n<li>Zajist\u011bte co nejkrat\u0161\u00ed \u010das do f\u00e1ze neru\u0161en\u00e9 \u010ditelnosti obsahu.<\/li>\n<li>Vyu\u017eijte tzv. Web Worker, neboli pomocn\u00edka, kter\u00fd obstar\u00e1 efektivn\u00ed rozd\u011blen\u00ed na\u010d\u00edt\u00e1n\u00ed skript\u016f na pozad\u00ed webu.<\/li>\n<li>Optimalizujte sv\u016fj Javascript k\u00f3d. A\u0165 u\u017e minifikac\u00ed, p\u0159\u00edpadn\u011b odstran\u011bn\u00edm nepot\u0159ebn\u00e9ho.<\/li>\n<\/ul>\n<h4>Optimalizace CLS<\/h4>\n<ul>\n<li>Optimalizujte obr\u00e1zky a na\u010d\u00edtejte je v p\u016fvodn\u00edm rozm\u011bru.<\/li>\n<li>Zajist\u011bte reklamy, tabulky, embedovan\u00fd obsah tak, aby p\u0159i na\u010d\u00edt\u00e1n\u00ed neodskakoval a neposouval obsah.<\/li>\n<li>Podchy\u0165te dynamicky na\u010d\u00edtan\u00fd obsah a pracujte s n\u00edm efektivn\u011b.<\/li>\n<li>Akce, kter\u00e9 \u010dekaj\u00ed na spojen\u00ed t\u0159et\u00edch stran p\u0159ed na\u010dten\u00edm DOM.<\/li>\n<\/ul>\n<p>\tMo\u017en\u00fdch probl\u00e9m\u016f se m\u016f\u017ee samoz\u0159ejm\u011b vyskytnout v\u00edce a existuje tak\u00e9 n\u011bkolik dal\u0161\u00edch mo\u017en\u00fdch \u0159e\u0161en\u00ed jak metriky Core Web Vitals optimalizovat. V\u00fd\u0161e jsou vyjmenovan\u00e9 ty nej\u010dast\u011bj\u0161\u00ed.<\/p>\n<h3>Z\u00e1v\u011brem<br \/><\/h3>\n<p>\tMetriky Core Web Vitals jsou kone\u010dn\u011b konkr\u00e9tn\u00ed sadou mantinel\u016f a hodnot\u00edc\u00edch faktor\u016f, kter\u00e9 pom\u00e1haj\u00ed l\u00e9pe uchopit dodnes trochu obecn\u00fd \u201cmobile first\u201d p\u0159\u00edstup k v\u00fdvoji web\u016f. Jsme zase o krok bl\u00ed\u017ee k tomu l\u00e9pe plnit po\u017eadavky vyhled\u00e1va\u010d\u016f na u\u017eivatelskou p\u0159\u00edv\u011btivost. Google upozornil na fakt, \u017ee metriky se mohou v budoucnu m\u00e9n\u011b \u010di v\u00edce m\u011bnit a bude jejich hodnocen\u00ed pru\u017en\u011b upravovat, dle aktu\u00e1ln\u00edch n\u00e1rok\u016f. Sledujte tak pr\u016fb\u011b\u017en\u011b pr\u00e1v\u011b p\u0159\u00edstup Google k t\u011bmto metrik\u00e1m, a\u0165 jste p\u0159ipraveni na p\u0159\u00edpadn\u00e9 zm\u011bny.<\/p>\n<p><\/p>\n<p>Pot\u0159ebujete v\u011bd\u011bt v\u00edce? Nebo chcete pomoc rozjet V\u00e1\u0161 web? M\u016f\u017eete n\u00e1m napsat e-mail na <a href=\"http:\/\/info@webmium.cz\/\">info@webmium.cz<\/a>. D\u00e1le n\u00e1s m\u016f\u017eete kontaktovat pomoc\u00ed formul\u00e1\u0159e na na\u0161ich webov\u00fdch str\u00e1nk\u00e1ch <a href=\"https:\/\/webmium.cz\/kontakt\">webmium.cz\/kontakt<\/a> nebo na telefonn\u00edm \u010d\u00edsle na\u0161\u00ed podpory<a href=\"https:\/\/www.webmium.cz\/kontakt\"> +420 605 99 44 66<\/a> a my se V\u00e1m co nejd\u0159\u00edve ozveme.<\/p>\n<p><\/p>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pod\u00edvali jsme se na zub Core Web Vitals. Metrik\u00e1m, ozna\u010duj\u00edc\u00edm m\u00edru u\u017eivatelsk\u00e9ho z\u00e1\u017eitku na webu. O tom, co se pod nimi re\u00e1ln\u011b skr\u00fdv\u00e1, na co maj\u00ed vliv a jak se s nimi popasovat, si pov\u00edme v \u010dl\u00e1nku.<\/p>\n","protected":false},"author":2,"featured_media":1941,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Core Web Vitals: Co znamenaj\u00ed a jak s nimi pracovat?<\/title>\n<meta name=\"description\" content=\"Pod\u00edvali jsme se na zub Core Web Vitals. 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