{"id":3674,"date":"2026-10-29T09:30:00","date_gmt":"2026-10-29T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/cs\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/"},"modified":"2026-11-11T07:57:46","modified_gmt":"2026-11-11T07:57:46","slug":"what-are-core-web-vitals-how-they-impact-site-speed-cs","status":"publish","type":"post","link":"https:\/\/potenting.com\/cs\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/","title":{"rendered":"Co jsou Core Web Vitals &amp; jak ovliv\u0148uj\u00ed rychlost webu?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3674\" class=\"elementor elementor-3674\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4c13572 e-flex e-con-boxed e-con e-parent\" data-id=\"4c13572\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb46438 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"fb46438\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;Na t\\u00e9to str\\u00e1nce nebyly nalezeny \\u017e\\u00e1dn\\u00e9 nadpisy.&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tObsah\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__fb46438\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__fb46438\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__fb46438\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1872cac e-flex e-con-boxed e-con e-parent\" data-id=\"1872cac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2cb80fd elementor-widget elementor-widget-text-editor\" data-id=\"2cb80fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>V\u00fdkon webu nen\u00ed jen o tom, jak rychle se str\u00e1nka na\u010dte. I kdy\u017e se obsah zobraz\u00ed b\u011bhem n\u011bkolika sekund, pomal\u00e1 odezva tla\u010d\u00edtek nebo ne\u010dekan\u00e9 posuny rozvr\u017een\u00ed mohou n\u00e1v\u0161t\u011bvn\u00edky frustrovat a zhor\u0161it jejich z\u00e1\u017eitek. Jak tedy zjistit, zda v\u00e1\u0161 web funguje dob\u0159e? Core Web Vitals jsou kl\u00ed\u010dov\u00e9 metriky v\u00fdkonu od Googlu, kter\u00e9 m\u011b\u0159\u00ed rychlost na\u010d\u00edt\u00e1n\u00ed, interaktivitu a vizu\u00e1ln\u00ed stabilitu. V tomto pr\u016fvodci se dozv\u00edte o t\u0159ech metrik\u00e1ch Core Web Vitals, jejich doporu\u010den\u00fdch prahov\u00fdch hodnot\u00e1ch a n\u00e1stroj\u00edch, kter\u00e9 m\u016f\u017eete pou\u017e\u00edt k m\u011b\u0159en\u00ed a zlep\u0161en\u00ed v\u00fdkonu sv\u00e9ho webu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-664621b e-flex e-con-boxed e-con e-parent\" data-id=\"664621b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-31dc3da elementor-widget elementor-widget-text-editor\" data-id=\"31dc3da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Co jsou Core Web Vitals?<\/h2><p>Core Web Vitals jsou sada metrik v\u00fdkonu, kter\u00e9 Google zavedl k m\u011b\u0159en\u00ed d\u016fle\u017eit\u00fdch aspekt\u016f u\u017eivatelsk\u00e9ho z\u00e1\u017eitku na webu. Tyto metriky se zam\u011b\u0159uj\u00ed na t\u0159i hlavn\u00ed faktory: v\u00fdkon na\u010d\u00edt\u00e1n\u00ed, interaktivitu a vizu\u00e1ln\u00ed stabilitu. Jin\u00fdmi slovy pom\u00e1haj\u00ed provozovatel\u016fm web\u016f pochopit, jak rychle se str\u00e1nka na\u010dte, jak plynule s n\u00ed mohou u\u017eivatel\u00e9 pracovat a zda jej\u00ed obsah z\u016fst\u00e1v\u00e1 b\u011bhem na\u010d\u00edt\u00e1n\u00ed stabiln\u00ed.<\/p><p>V\u00fdkon webu nen\u00ed jen o tom, jak rychle se str\u00e1nka otev\u0159e. Web m\u016f\u017ee sv\u016fj obsah na\u010d\u00edst za kr\u00e1tkou dobu, ale pokud u\u017eivatel\u00e9 mus\u00ed \u010dekat, ne\u017e mohou kliknout na tla\u010d\u00edtko, nebo pokud se rozvr\u017een\u00ed str\u00e1nky ne\u010dekan\u011b zm\u011bn\u00ed, celkov\u00fd z\u00e1\u017eitek m\u016f\u017ee b\u00fdt i tak \u0161patn\u00fd. Core Web Vitals pom\u00e1haj\u00ed tyto probl\u00e9my odhalit a poskytuj\u00ed m\u011b\u0159iteln\u00e9 c\u00edle pro zlep\u0161en\u00ed v\u00fdkonu webu.<\/p><p>Google v sou\u010dasnosti pou\u017e\u00edv\u00e1 t\u0159i metriky Core Web Vitals: Largest Contentful Paint (LCP), Interaction to Next Paint (INP) a Cumulative Layout Shift (CLS). Ka\u017ed\u00e1 metrika m\u011b\u0159\u00ed jinou \u010d\u00e1st u\u017eivatelsk\u00e9ho z\u00e1\u017eitku, tak\u017ee zlep\u0161en\u00ed jedn\u00e9 z nich nutn\u011b neznamen\u00e1, \u017ee se zlep\u0161\u00ed i zbyl\u00e9 dv\u011b.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-603a3e6 e-flex e-con-boxed e-con e-parent\" data-id=\"603a3e6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ffab792 elementor-widget elementor-widget-text-editor\" data-id=\"ffab792\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Pro\u010d jsou Core Web Vitals d\u016fle\u017eit\u00e9?<\/h2><p>Web by m\u011bl sv\u00fdm n\u00e1v\u0161t\u011bvn\u00edk\u016fm poskytovat plynul\u00fd a spolehliv\u00fd z\u00e1\u017eitek. Kdy\u017e se str\u00e1nka na\u010d\u00edt\u00e1 p\u0159\u00edli\u0161 dlouho, u\u017eivatel\u00e9 mohou odej\u00edt d\u0159\u00edve, ne\u017e se dostanou k informac\u00edm, kter\u00e9 pot\u0159ebuj\u00ed. Podobn\u011b pokud tla\u010d\u00edtka reaguj\u00ed pomalu nebo se prvky str\u00e1nky ne\u010dekan\u011b posouvaj\u00ed, n\u00e1v\u0161t\u011bvn\u00edci mohou b\u00fdt frustrovan\u00ed a m\u00edt pot\u00ed\u017ee s dokon\u010den\u00edm sv\u00fdch \u00fakol\u016f.<\/p><p>Core Web Vitals pom\u00e1haj\u00ed provozovatel\u016fm web\u016f tyto probl\u00e9my identifikovat pomoc\u00ed m\u011b\u0159iteln\u00fdch dat o v\u00fdkonu, m\u00edsto aby se spol\u00e9hali jen na osobn\u00ed dojmy. V\u00fdvoj\u00e1\u0159 m\u016f\u017ee nap\u0159\u00edklad otestovat web na v\u00fdkonn\u00e9m po\u010d\u00edta\u010di a zjistit, \u017ee se na\u010d\u00edt\u00e1 rychle. N\u00e1v\u0161t\u011bvn\u00edci se star\u0161\u00edmi mobiln\u00edmi za\u0159\u00edzen\u00edmi nebo pomalej\u0161\u00edm internetov\u00fdm p\u0159ipojen\u00edm v\u0161ak mohou za\u017e\u00edvat mnohem del\u0161\u00ed doby na\u010d\u00edt\u00e1n\u00ed.<\/p><p>Kv\u016fli t\u011bmto rozd\u00edl\u016fm je sledov\u00e1n\u00ed v\u00fdkonu d\u016fle\u017eit\u00e9. Anal\u00fdzou dat Core Web Vitals mohou v\u00fdvoj\u00e1\u0159i zjistit, kter\u00e9 \u010d\u00e1sti webu je t\u0159eba zlep\u0161it, a ov\u011b\u0159it, zda jejich optimaliza\u010dn\u00ed \u00fasil\u00ed p\u0159in\u00e1\u0161\u00ed o\u010dek\u00e1van\u00e9 v\u00fdsledky.<\/p><p>Core Web Vitals jsou relevantn\u00ed tak\u00e9 pro optimalizaci pro vyhled\u00e1va\u010de (SEO). Google ve sv\u00fdch syst\u00e9mech hodnocen\u00ed pou\u017e\u00edv\u00e1 sign\u00e1ly u\u017eivatelsk\u00e9ho z\u00e1\u017eitku ze str\u00e1nky, dobr\u00e9 v\u00fdsledky Core Web Vitals v\u0161ak vy\u0161\u0161\u00ed pozice nezaru\u010duj\u00ed. Relevantn\u00ed obsah a mnoho dal\u0161\u00edch faktor\u016f z\u016fst\u00e1vaj\u00ed d\u016fle\u017eit\u00e9. Zlep\u0161ov\u00e1n\u00ed t\u011bchto metrik by proto m\u011blo b\u00fdt sou\u010d\u00e1st\u00ed \u0161ir\u0161\u00ed strategie budov\u00e1n\u00ed u\u017eite\u010dn\u00e9ho, p\u0159\u00edstupn\u00e9ho a spolehliv\u00e9ho webu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-598ac2f e-flex e-con-boxed e-con e-parent\" data-id=\"598ac2f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-def6c44 elementor-widget elementor-widget-text-editor\" data-id=\"def6c44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak\u00e9 jsou t\u0159i metriky Core Web Vitals?<\/h2><p>Ka\u017ed\u00e1 metrika Core Web Vitals se zam\u011b\u0159uje na konkr\u00e9tn\u00ed aspekt v\u00fdkonu webu. Pochopen\u00ed toho, jak funguj\u00ed, usnad\u0148uje odhalen\u00ed probl\u00e9m\u016f s v\u00fdkonem a v\u00fdb\u011br spr\u00e1vn\u00fdch optimaliza\u010dn\u00edch technik.<\/p><ul><li><h3>Co je Largest Contentful Paint (LCP)?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Largest Contentful Paint (LCP) m\u011b\u0159\u00ed, jak dlouho trv\u00e1, ne\u017e se zobraz\u00ed nejv\u011bt\u0161\u00ed obr\u00e1zek nebo textov\u00fd blok viditeln\u00fd v \u00favodn\u00ed oblasti zobrazen\u00ed. Tato metrika pom\u00e1h\u00e1 odhadnout, kdy se hlavn\u00ed obsah str\u00e1nky stane pro u\u017eivatele viditeln\u00fdm.<\/p><p style=\"padding-left: 40px;\">P\u0159edstavte si nap\u0159\u00edklad, \u017ee n\u00e1v\u0161t\u011bvn\u00edk otev\u0159e \u010dl\u00e1nek na blogu. Pozad\u00ed str\u00e1nky a naviga\u010dn\u00ed menu se mohou zobrazit t\u00e9m\u011b\u0159 okam\u017eit\u011b, ale hlavn\u00ed nadpis nebo \u00favodn\u00ed obr\u00e1zek se m\u016f\u017ee na\u010d\u00edtat n\u011bkolik sekund. V takov\u00e9 situaci m\u016f\u017ee m\u00edt n\u00e1v\u0161t\u011bvn\u00edk pocit, \u017ee se str\u00e1nka st\u00e1le na\u010d\u00edt\u00e1, i kdy\u017e jsou n\u011bkter\u00e9 jej\u00ed prvky u\u017e viditeln\u00e9. Dobr\u00e1 hodnota LCP by m\u011bla b\u00fdt 2,5 sekundy nebo m\u00e9n\u011b. Pokud se hodnota pohybuje mezi 2,5 a 4 sekundami, str\u00e1nka pot\u0159ebuje zlep\u0161en\u00ed. Hodnota LCP vy\u0161\u0161\u00ed ne\u017e 4 sekundy se pova\u017euje za \u0161patnou.<\/p><p style=\"padding-left: 40px;\">LCP m\u016f\u017ee ovlivnit n\u011bkolik faktor\u016f, v\u010detn\u011b pomal\u00e9 odezvy serveru, velk\u00fdch obr\u00e1zk\u016f, CSS a JavaScriptu blokuj\u00edc\u00edch vykreslov\u00e1n\u00ed a zpo\u017ed\u011bn\u00ed p\u0159i objeven\u00ed hlavn\u00edho obsahu.<\/p><p style=\"padding-left: 40px;\">Pro zlep\u0161en\u00ed LCP mohou provozovatel\u00e9 web\u016f podniknout n\u00e1sleduj\u00edc\u00ed kroky:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">Optimalizujte obr\u00e1zky:<\/span> Zmen\u0161ete velikost soubor\u016f obr\u00e1zk\u016f a tam, kde je to vhodn\u00e9, pou\u017e\u00edvejte modern\u00ed form\u00e1ty jako WebP nebo AVIF.<\/li><li><span style=\"color: #a26f9a;\">Zlep\u0161ete dobu odezvy serveru:<\/span> Vyu\u017e\u00edvejte efektivn\u00ed hostingov\u00e9 prost\u0159edky, cachov\u00e1n\u00ed a s\u00ed\u0165 pro doru\u010dov\u00e1n\u00ed obsahu (CDN), pokud jsou pro dan\u00fd web vhodn\u00e9.<\/li><li><span style=\"color: #a26f9a;\">Up\u0159ednostn\u011bte hlavn\u00ed obsah:<\/span> Zajist\u011bte, aby prohl\u00ed\u017ee\u010d dok\u00e1zal d\u016fle\u017eit\u00e9 obr\u00e1zky objevit p\u0159\u00edmo ve zdrojov\u00e9m k\u00f3du HTML, a v p\u0159\u00edpad\u011b pot\u0159eby up\u0159ednostn\u011bte jejich na\u010d\u00edt\u00e1n\u00ed.<\/li><li><span style=\"color: #a26f9a;\">Omezte zdroje blokuj\u00edc\u00ed vykreslov\u00e1n\u00ed:<\/span> Optimalizujte soubory CSS a JavaScript, kter\u00e9 prohl\u00ed\u017ee\u010di br\u00e1n\u00ed v zobrazen\u00ed hlavn\u00edho obsahu.<\/li><li><span style=\"color: #a26f9a;\">Nepou\u017e\u00edvejte lazy loading u obr\u00e1zku LCP:<\/span> Pokud bude obr\u00e1zek pravd\u011bpodobn\u011b prvkem LCP, odlo\u017een\u00ed jeho na\u010d\u00edt\u00e1n\u00ed m\u016f\u017ee zp\u016fsobit, \u017ee str\u00e1nka bude p\u016fsobit pomaleji.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">Tyto techniky mohou zkr\u00e1tit dobu, po kterou u\u017eivatel\u00e9 \u010dekaj\u00ed na zobrazen\u00ed hlavn\u00edho obsahu. Nej\u00fa\u010dinn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed v\u0161ak z\u00e1vis\u00ed na p\u0159\u00ed\u010din\u011b zpo\u017ed\u011bn\u00ed, proto je d\u016fle\u017eit\u00e9 str\u00e1nku p\u0159ed proveden\u00edm zm\u011bn zm\u011b\u0159it.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-41d4bab e-flex e-con-boxed e-con e-parent\" data-id=\"41d4bab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fc39543 elementor-widget elementor-widget-text-editor\" data-id=\"fc39543\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><h3>Co je Interaction to Next Paint (INP)?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Interaction to Next Paint (INP) m\u011b\u0159\u00ed, jak pohotov\u011b web reaguje, kdy\u017e s n\u00edm u\u017eivatel\u00e9 pracuj\u00ed. Hodnot\u00ed prodlevu mezi interakc\u00ed u\u017eivatele, nap\u0159\u00edklad kliknut\u00edm na tla\u010d\u00edtko nebo stisknut\u00edm kl\u00e1vesy, a dal\u0161\u00ed vizu\u00e1ln\u00ed aktualizac\u00ed, kterou prohl\u00ed\u017ee\u010d zobraz\u00ed.<\/p><p style=\"padding-left: 40px;\">Vezm\u011bme si internetov\u00fd obchod, kde n\u00e1v\u0161t\u011bvn\u00edk klikne na tla\u010d\u00edtko P\u0159idat do ko\u0161\u00edku. Pokud prohl\u00ed\u017ee\u010di trv\u00e1 znatelnou dobu, ne\u017e ko\u0161\u00edk aktualizuje, n\u00e1v\u0161t\u011bvn\u00edk si m\u016f\u017ee myslet, \u017ee tla\u010d\u00edtko nefungovalo, a kliknout znovu. To m\u016f\u017ee zp\u016fsobit zmatek a dokonce v\u00e9st k duplicitn\u00edm akc\u00edm.<\/p><p style=\"padding-left: 40px;\">INP pom\u00e1h\u00e1 tyto typy probl\u00e9m\u016f odhalit t\u00edm, \u017ee m\u011b\u0159\u00ed odezvu str\u00e1nky b\u011bhem cel\u00e9 n\u00e1v\u0161t\u011bvy u\u017eivatele. Na rozd\u00edl od First Input Delay (FID), kter\u00e1 m\u011b\u0159ila pouze prodlevu p\u0159ed t\u00edm, ne\u017e prohl\u00ed\u017ee\u010d za\u010dal zpracov\u00e1vat prvn\u00ed interakci, zohled\u0148uje INP \u0161ir\u0161\u00ed z\u00e1\u017eitek z interakc\u00ed po celou dobu \u017eivota str\u00e1nky. Dobr\u00e1 hodnota INP je 200 milisekund nebo m\u00e9n\u011b. Hodnoty vy\u0161\u0161\u00ed ne\u017e 200 milisekund a a\u017e do 500 milisekund pot\u0159ebuj\u00ed zlep\u0161en\u00ed, zat\u00edmco hodnoty nad 500 milisekund se pova\u017euj\u00ed za \u0161patn\u00e9.<\/p><p style=\"padding-left: 40px;\">\u010castou p\u0159\u00ed\u010dinou \u0161patn\u00e9 hodnoty INP je JavaScript, proto\u017ee prohl\u00ed\u017ee\u010d m\u016f\u017ee muset spustit skripty d\u0159\u00edve, ne\u017e dok\u00e1\u017ee reagovat na vstup u\u017eivatele a zobrazit aktualizaci. Dlouho b\u011b\u017e\u00edc\u00ed \u00falohy mohou prohl\u00ed\u017ee\u010di br\u00e1nit v pohotov\u00e9m zpracov\u00e1n\u00ed interakc\u00ed.<\/p><p style=\"padding-left: 40px;\">Pro zlep\u0161en\u00ed INP mohou v\u00fdvoj\u00e1\u0159i vyu\u017e\u00edt n\u011bkolik technik:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">Omezte zbyte\u010dn\u00fd JavaScript:<\/span> Odstra\u0148te nepou\u017e\u00edvan\u00fd k\u00f3d a nena\u010d\u00edtejte skripty, kter\u00e9 aktu\u00e1ln\u00ed str\u00e1nka nepot\u0159ebuje.<\/li><li><span style=\"color: #a26f9a;\">Rozd\u011blte dlouh\u00e9 \u00falohy:<\/span> Rozd\u011blte velk\u00e9 \u00falohy JavaScriptu na men\u0161\u00ed, aby m\u011bl prohl\u00ed\u017ee\u010d v\u00edce p\u0159\u00edle\u017eitost\u00ed zpracovat interakce u\u017eivatele.<\/li><li><span style=\"color: #a26f9a;\">Optimalizujte obsluhu ud\u00e1lost\u00ed:<\/span> Udr\u017eujte funkce souvisej\u00edc\u00ed s interakcemi co nejjednodu\u0161\u0161\u00ed a nejefektivn\u011bj\u0161\u00ed.<\/li><li><span style=\"color: #a26f9a;\">Vyhn\u011bte se zbyte\u010dn\u00fdm aktualizac\u00edm DOM:<\/span> Aktualizace p\u0159\u00edli\u0161 mnoha prvk\u016f najednou m\u016f\u017ee prodlou\u017eit dobu vykreslov\u00e1n\u00ed a zpozdit dal\u0161\u00ed vizu\u00e1ln\u00ed aktualizaci.<\/li><li><span style=\"color: #a26f9a;\">Omezte skripty t\u0159et\u00edch stran:<\/span> Analytick\u00e9 n\u00e1stroje, reklamn\u00ed skripty a vlo\u017een\u00e9 slu\u017eby mohou spot\u0159ebov\u00e1vat v\u00fdpo\u010detn\u00ed prost\u0159edky a ovliv\u0148ovat odezvu.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">Zlep\u0161en\u00ed INP vy\u017eaduje v\u00edc ne\u017e jen zmen\u0161en\u00ed celkov\u00e9 velikosti soubor\u016f JavaScriptu. V\u00fdvoj\u00e1\u0159i tak\u00e9 mus\u00ed rozum\u011bt tomu, kdy se skripty spou\u0161t\u011bj\u00ed a kolik pr\u00e1ce mus\u00ed prohl\u00ed\u017ee\u010d po interakci vykonat.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-06d2979 e-flex e-con-boxed e-con e-parent\" data-id=\"06d2979\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6c1a655 elementor-widget elementor-widget-text-editor\" data-id=\"6c1a655\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><h3>Co je Cumulative Layout Shift (CLS)?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Cumulative Layout Shift (CLS) m\u011b\u0159\u00ed vizu\u00e1ln\u00ed stabilitu webov\u00e9 str\u00e1nky. Zam\u011b\u0159uje se na ne\u010dekan\u00e9 zm\u011bny pozice viditeln\u00fdch prvk\u016f b\u011bhem zobrazov\u00e1n\u00ed str\u00e1nky.<\/p><p style=\"padding-left: 40px;\">P\u0159edstavte si nap\u0159\u00edklad, \u017ee n\u00e1v\u0161t\u011bvn\u00edk \u010dte \u010dl\u00e1nek a najednou vid\u00ed, jak se text posune dol\u016f, proto\u017ee se nad n\u00edm objevila reklama. Pokud se n\u00e1v\u0161t\u011bvn\u00edk chystal kliknout na odkaz, ne\u010dekan\u00fd posun m\u016f\u017ee zp\u016fsobit, \u017ee klikne na jin\u00fd prvek. Tyto zm\u011bny rozvr\u017een\u00ed mohou web zt\u00ed\u017eit pou\u017e\u00edv\u00e1n\u00ed, zejm\u00e9na na mobiln\u00edch za\u0159\u00edzen\u00edch, kde je viditeln\u00e1 plocha omezen\u00e1. Dobr\u00e1 hodnota CLS je 0,1 nebo m\u00e9n\u011b. Hodnoty vy\u0161\u0161\u00ed ne\u017e 0,1 a a\u017e do 0,25 pot\u0159ebuj\u00ed zlep\u0161en\u00ed, zat\u00edmco hodnoty nad 0,25 se pova\u017euj\u00ed za \u0161patn\u00e9.<\/p><p style=\"padding-left: 40px;\">Ne\u010dekan\u00e9 posuny rozvr\u017een\u00ed m\u016f\u017ee zp\u016fsobit n\u011bkolik b\u011b\u017en\u00fdch probl\u00e9m\u016f. Vizu\u00e1ln\u00ed stabilitu mohou ovlivnit obr\u00e1zky bez definovan\u00fdch rozm\u011br\u016f, dynamicky vkl\u00e1dan\u00e9 reklamy, pozd\u011bji na\u010d\u00edtan\u00fd obsah i webov\u00e1 p\u00edsma, kter\u00e1 m\u011bn\u00ed vzhled textu.<\/p><p style=\"padding-left: 40px;\">Ke zlep\u0161en\u00ed CLS mohou pomoci n\u00e1sleduj\u00edc\u00ed techniky:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">Nastavte rozm\u011bry obr\u00e1zk\u016f:<\/span> Uve\u010fte \u0161\u00ed\u0159ku a v\u00fd\u0161ku obr\u00e1zk\u016f nebo pou\u017eijte pom\u011bry stran v CSS, abyste pot\u0159ebn\u00fd prostor vyhradili je\u0161t\u011b p\u0159ed na\u010dten\u00edm obr\u00e1zku.<\/li><li><span style=\"color: #a26f9a;\">Vyhra\u010fte prostor pro reklamy:<\/span> Vy\u010dle\u0148te pro reklamn\u00ed kontejnery dostatek m\u00edsta, aby se okoln\u00ed obsah p\u0159i zobrazen\u00ed reklam neposouval.<\/li><li><span style=\"color: #a26f9a;\">Nevkl\u00e1dejte obsah nad st\u00e1vaj\u00edc\u00ed obsah:<\/span> Pokud je t\u0159eba zobrazit nov\u00e9 prvky, um\u00edst\u011bte je tam, kde ne\u010dekan\u011b neposunou obsah, kter\u00fd si u\u017eivatel\u00e9 pr\u00e1v\u011b prohl\u00ed\u017eej\u00ed.<\/li><li><span style=\"color: #a26f9a;\">Optimalizujte na\u010d\u00edt\u00e1n\u00ed p\u00edsem:<\/span> Pou\u017e\u00edvejte vhodn\u00e9 strategie na\u010d\u00edt\u00e1n\u00ed p\u00edsem a z\u00e1lo\u017en\u00ed p\u00edsma, abyste omezili ne\u010dekan\u00e9 zm\u011bny v rozvr\u017een\u00ed textu.<\/li><li><span style=\"color: #a26f9a;\">Pou\u017e\u00edvejte vhodn\u00e9 CSS animace:<\/span> Pokud je to mo\u017en\u00e9, up\u0159ednost\u0148ujte animace zalo\u017een\u00e9 na vlastnostech jako transform a opacity p\u0159ed vlastnostmi, kter\u00e9 zp\u016fsobuj\u00ed zm\u011bny rozvr\u017een\u00ed.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">Je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee ne ka\u017ed\u00fd posun rozvr\u017een\u00ed je \u0161kodliv\u00fd. Zm\u011bna, ke kter\u00e9 dojde p\u0159\u00edmo v reakci na interakci u\u017eivatele, m\u016f\u017ee b\u00fdt o\u010dek\u00e1van\u00e1. CLS se zam\u011b\u0159uje na ne\u010dekanou vizu\u00e1ln\u00ed nestabilitu a pou\u017e\u00edv\u00e1 metodu hodnocen\u00ed zalo\u017eenou na dopadu a vzd\u00e1lenosti posunu rozvr\u017een\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-003d4a2 e-con e-atomic-element e-flexbox-base e-default-div \" data-id=\"003d4a2\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"003d4a2\" data-e-type=\"e-flexbox\" data-id=\"003d4a2\">\n    \t\t\t<img fetchpriority=\"high\" decoding=\"async\" class=\"e-image-base e-default-img \" data-interaction-id=\"d66abbc\" data-e-type=\"widget\" data-id=\"d66abbc\" id=\"3537\" src=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/What-Are-the-Three-Core-Web-Vitals-Metrics.webp\" width=\"600\" height=\"517\" srcset=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/What-Are-the-Three-Core-Web-Vitals-Metrics.webp 600w, https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/What-Are-the-Three-Core-Web-Vitals-Metrics-300x259.webp 300w\" alt=\"What Are the Three Core Web Vitals Metrics\"\/>\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-5540eed e-flex e-con-boxed e-con e-parent\" data-id=\"5540eed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-004b13a elementor-widget elementor-widget-text-editor\" data-id=\"004b13a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak\u00e9 jsou doporu\u010den\u00e9 prahov\u00e9 hodnoty Core Web Vitals?<\/h2><p>Google stanovuje konkr\u00e9tn\u00ed prahov\u00e9 hodnoty, kter\u00e9 provozovatel\u016fm web\u016f pom\u00e1haj\u00ed ur\u010dit, zda jejich str\u00e1nky nab\u00edzej\u00ed dobr\u00fd u\u017eivatelsk\u00fd z\u00e1\u017eitek. Tyto prahov\u00e9 hodnoty rozd\u011bluj\u00ed v\u00fdkon do t\u0159\u00ed kategori\u00ed: dobr\u00fd, pot\u0159ebuje zlep\u0161en\u00ed a \u0161patn\u00fd.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ad8e2fa e-flex e-con-boxed e-con e-parent\" data-id=\"ad8e2fa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b580045 elementor-widget elementor-widget-wp-widget-custom_html\" data-id=\"b580045\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wp-widget-custom_html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"textwidget custom-html-widget\"><div class=\"cwv-table-wrapper\">\r\n  <table class=\"cwv-table\">\r\n    <thead>\r\n      <tr>\r\n        <th>Core Web Vital<\/th>\r\n        <th>What It Measures<\/th>\r\n        <th>Good Threshold<\/th>\r\n        <th>Needs Improvement<\/th>\r\n        <th>Poor<\/th>\r\n      <\/tr>\r\n    <\/thead>\r\n    <tbody>\r\n      <tr>\r\n        <td><strong>Largest Contentful Paint (LCP)<\/strong><\/td>\r\n        <td>Loading performance<\/td>\r\n        <td><span class=\"badge-good\">\u2264 2.5 seconds<\/span><\/td>\r\n        <td><span class=\"badge-needs\">2.5\u20134 seconds<\/span><\/td>\r\n        <td><span class=\"badge-poor\">&gt; 4 seconds<\/span><\/td>\r\n      <\/tr>\r\n      <tr>\r\n        <td><strong>Interaction to Next Paint (INP)<\/strong><\/td>\r\n        <td>Interactivity<\/td>\r\n        <td><span class=\"badge-good\">\u2264 200 milliseconds<\/span><\/td>\r\n        <td><span class=\"badge-needs\">200\u2013500 milliseconds<\/span><\/td>\r\n        <td><span class=\"badge-poor\">&gt; 500 milliseconds<\/span><\/td>\r\n      <\/tr>\r\n      <tr>\r\n        <td><strong>Cumulative Layout Shift (CLS)<\/strong><\/td>\r\n        <td>Visual stability<\/td>\r\n        <td><span class=\"badge-good\">\u2264 0.1<\/span><\/td>\r\n        <td><span class=\"badge-needs\">0.1\u20130.25<\/span><\/td>\r\n        <td><span class=\"badge-poor\">&gt; 0.25<\/span><\/td>\r\n      <\/tr>\r\n    <\/tbody>\r\n  <\/table>\r\n<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-794f84f e-flex e-con-boxed e-con e-parent\" data-id=\"794f84f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e2086f elementor-widget elementor-widget-text-editor\" data-id=\"4e2086f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Tyto prahov\u00e9 hodnoty pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm hodnotit ka\u017edou metriku zvl\u00e1\u0161\u0165. Jedin\u00fd test v\u0161ak nesta\u010d\u00ed k ur\u010den\u00ed, zda web poskytuje dobr\u00fd z\u00e1\u017eitek konzistentn\u011b.<\/p><p>Google doporu\u010duje hodnotit Core Web Vitals na 75. percentilu n\u00e1v\u0161t\u011bv str\u00e1nky, p\u0159i\u010dem\u017e v\u00fdsledky pro mobiln\u00ed za\u0159\u00edzen\u00ed a desktop se posuzuj\u00ed odd\u011blen\u011b. To znamen\u00e1, \u017ee alespo\u0148 75 % m\u011b\u0159en\u00fdch n\u00e1v\u0161t\u011bv by m\u011blo u ka\u017ed\u00e9 metriky spl\u0148ovat hranici pro dobr\u00fd v\u00fdsledek.<\/p><p>P\u0159edpokl\u00e1dejme nap\u0159\u00edklad, \u017ee web m\u00e1 na 75. percentilu hodnotu LCP 2 sekundy. To znamen\u00e1, \u017ee 75 % m\u011b\u0159en\u00fdch n\u00e1v\u0161t\u011bv str\u00e1nky m\u00e1 LCP 2 sekundy nebo m\u00e9n\u011b, co\u017e spl\u0148uje doporu\u010denou prahovou hodnotu.<\/p><p>Web by se m\u011bl sna\u017eit splnit hranice pro dobr\u00fd v\u00fdsledek u v\u0161ech t\u0159\u00ed metrik, m\u00edsto aby se soust\u0159edil jen na sv\u016fj nejlep\u0161\u00ed v\u00fdsledek.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e81c451 e-flex e-con-boxed e-con e-parent\" data-id=\"e81c451\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-404eccc elementor-widget elementor-widget-text-editor\" data-id=\"404eccc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak\u00e9 jsou n\u00e1stroje pro m\u011b\u0159en\u00ed Core Web Vitals?<\/h2><p>Core Web Vitals lze m\u011b\u0159it pomoc\u00ed n\u011bkolika n\u00e1stroj\u016f od Googlu. Tyto n\u00e1stroje pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm pochopit, jak web funguje, a odhalit oblasti, kter\u00e9 je t\u0159eba zlep\u0161it.<\/p><ul><li><h3>PageSpeed Insights<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">PageSpeed Insights pat\u0159\u00ed k neju\u017eite\u010dn\u011bj\u0161\u00edm n\u00e1stroj\u016fm pro kontrolu Core Web Vitals. Poskytuje data od skute\u010dn\u00fdch u\u017eivatel\u016f, pokud jsou k dispozici, i laboratorn\u00ed data shrom\u00e1\u017ed\u011bn\u00e1 pomoc\u00ed simulovan\u00e9ho testu. Nab\u00edz\u00ed tak\u00e9 doporu\u010den\u00ed pro zlep\u0161en\u00ed v\u00fdkonu str\u00e1nky.<\/p><ul><li><h3>Google Search Console<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Google Search Console obsahuje p\u0159ehled Core Web Vitals, kter\u00fd ukazuje, kter\u00e9 skupiny str\u00e1nek poskytuj\u00ed dobr\u00fd u\u017eivatelsk\u00fd z\u00e1\u017eitek a kter\u00e9 pot\u0159ebuj\u00ed zlep\u0161en\u00ed. Vyu\u017e\u00edv\u00e1 data z re\u00e1ln\u00e9ho provozu, aby provozovatel\u016fm web\u016f pomohl odhalit probl\u00e9my s v\u00fdkonem na v\u00edce str\u00e1nk\u00e1ch.<\/p><ul><li><h3>Chrome DevTools a Lighthouse<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Chrome DevTools a Lighthouse pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm testovat v\u00fdkon str\u00e1nky v kontrolovan\u00e9m prost\u0159ed\u00ed. Dok\u00e1\u017eou odhalit probl\u00e9my souvisej\u00edc\u00ed se spou\u0161t\u011bn\u00edm JavaScriptu, na\u010d\u00edt\u00e1n\u00edm obr\u00e1zk\u016f, posuny rozvr\u017een\u00ed a dal\u0161\u00edmi faktory, kter\u00e9 ovliv\u0148uj\u00ed Core Web Vitals.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-304771b e-flex e-con-boxed e-con e-parent\" data-id=\"304771b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1717bca elementor-widget elementor-widget-text-editor\" data-id=\"1717bca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak\u00fd je rozd\u00edl mezi daty z ter\u00e9nu a laboratorn\u00edmi daty?<\/h2><p>Core Web Vitals lze hodnotit pomoc\u00ed dvou typ\u016f dat: dat z ter\u00e9nu a laboratorn\u00edch dat. Pochopen\u00ed rozd\u00edlu pom\u00e1h\u00e1 v\u00fdvoj\u00e1\u0159\u016fm spr\u00e1vn\u011b interpretovat v\u00fdsledky test\u016f a zvolit vhodn\u00fd p\u0159\u00edstup ke zlep\u0161en\u00ed v\u00fdkonu webu.<\/p><ul><li><h3>Data z ter\u00e9nu<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Data z ter\u00e9nu se shroma\u017e\u010fuj\u00ed od skute\u010dn\u00fdch u\u017eivatel\u016f p\u0159i proch\u00e1zen\u00ed webu. Odr\u00e1\u017eej\u00ed re\u00e1ln\u00e9 podm\u00ednky proch\u00e1zen\u00ed, v\u010detn\u011b r\u016fzn\u00fdch za\u0159\u00edzen\u00ed, s\u00ed\u0165ov\u00fdch p\u0159ipojen\u00ed a interakc\u00ed u\u017eivatel\u016f.<\/p><p style=\"padding-left: 40px;\">Tato data jsou obzvl\u00e1\u0161\u0165 u\u017eite\u010dn\u00e1 pro zji\u0161t\u011bn\u00ed, zda web v re\u00e1ln\u00fdch situac\u00edch spl\u0148uje prahov\u00e9 hodnoty Core Web Vitals doporu\u010den\u00e9 Googlem.<\/p><ul><li><h3>Laboratorn\u00ed data<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Laboratorn\u00ed data se shroma\u017e\u010fuj\u00ed v kontrolovan\u00e9m testovac\u00edm prost\u0159ed\u00ed pomoc\u00ed n\u00e1stroj\u016f, jako je Lighthouse. Pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm reprodukovat probl\u00e9my s v\u00fdkonem a zkoumat jejich mo\u017en\u00e9 p\u0159\u00ed\u010diny.<\/p><p style=\"padding-left: 40px;\">Na rozd\u00edl od dat z ter\u00e9nu laboratorn\u00ed data nep\u0159edstavuj\u00ed ka\u017ed\u00fd re\u00e1ln\u00fd u\u017eivatelsk\u00fd z\u00e1\u017eitek. Web proto m\u016f\u017ee v laboratorn\u00edch testech a v m\u011b\u0159en\u00edch od skute\u010dn\u00fdch u\u017eivatel\u016f dosahovat odli\u0161n\u00fdch v\u00fdsledk\u016f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9609e3a e-flex e-con-boxed e-con e-parent\" data-id=\"9609e3a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd449ba elementor-widget elementor-widget-text-editor\" data-id=\"cd449ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Jak zlep\u0161it Core Web Vitals<\/h2><p>Zlep\u0161en\u00ed Core Web Vitals vy\u017eaduje identifikovat probl\u00e9my, kter\u00e9 ovliv\u0148uj\u00ed rychlost na\u010d\u00edt\u00e1n\u00ed, interaktivitu a vizu\u00e1ln\u00ed stabilitu. Spr\u00e1vn\u00e9 \u0159e\u0161en\u00ed z\u00e1vis\u00ed na tom, kter\u00e1 metrika vykazuje slab\u00e9 v\u00fdsledky.<\/p><ul><li><h3>Zlep\u0161ete Largest Contentful Paint (LCP)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Pro zlep\u0161en\u00ed LCP by se v\u00fdvoj\u00e1\u0159i m\u011bli zam\u011b\u0159it na co nejrychlej\u0161\u00ed na\u010dten\u00ed nejv\u011bt\u0161\u00edho viditeln\u00e9ho obsahov\u00e9ho prvku. Mezi b\u011b\u017en\u00e1 zlep\u0161en\u00ed pat\u0159\u00ed optimalizace obr\u00e1zk\u016f, v\u00fdb\u011br spolehliv\u00e9 <a href=\"\/cs\/webhosting\/\">slu\u017eby webhostingu<\/a>, zkr\u00e1cen\u00ed doby odezvy serveru, zapnut\u00ed cachov\u00e1n\u00ed a p\u0159edch\u00e1zen\u00ed zbyte\u010dn\u00fdm zpo\u017ed\u011bn\u00edm p\u0159i na\u010d\u00edt\u00e1n\u00ed d\u016fle\u017eit\u00fdch zdroj\u016f.<\/p><ul><li><h3>Zlep\u0161ete Interaction to Next Paint (INP)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">INP lze zlep\u0161it omezen\u00edm dlouho b\u011b\u017e\u00edc\u00edch \u00faloh JavaScriptu a minimalizac\u00ed zbyte\u010dn\u00e9 pr\u00e1ce v hlavn\u00edm vl\u00e1kn\u011b. V\u00fdvoj\u00e1\u0159i by tak\u00e9 m\u011bli optimalizovat obsluhu ud\u00e1lost\u00ed a nenutit prohl\u00ed\u017ee\u010d vykon\u00e1vat p\u0159\u00edli\u0161 mnoho pr\u00e1ce pot\u00e9, co u\u017eivatel klikne, \u0165ukne nebo za\u010dne ps\u00e1t.<\/p><ul><li><h3>Zlep\u0161ete Cumulative Layout Shift (CLS)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Pro sn\u00ed\u017een\u00ed CLS by v\u00fdvoj\u00e1\u0159i m\u011bli vyhradit prostor pro obr\u00e1zky, videa, reklamy a dal\u0161\u00ed prvky je\u0161t\u011b p\u0159ed jejich na\u010dten\u00edm. Nevkl\u00e1dejte ne\u010dekan\u011b nov\u00fd obsah nad st\u00e1vaj\u00edc\u00ed obsah a pro vizu\u00e1ln\u00ed prvky pou\u017e\u00edvejte pokud mo\u017eno konzistentn\u00ed rozm\u011bry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6b9c37c e-flex e-con-boxed e-con e-parent\" data-id=\"6b9c37c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4329aff elementor-widget elementor-widget-text-editor\" data-id=\"4329aff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Z\u00e1v\u011brem<\/h2><p>Core Web Vitals pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm pochopit, jak u\u017eivatel\u00e9 vn\u00edmaj\u00ed web z hlediska v\u00fdkonu na\u010d\u00edt\u00e1n\u00ed, interaktivity a vizu\u00e1ln\u00ed stability. M\u011b\u0159en\u00edm LCP, INP a CLS mohou provozovatel\u00e9 web\u016f odhalit probl\u00e9my s v\u00fdkonem a up\u0159ednostnit zlep\u0161en\u00ed, d\u00edky nim\u017e se jejich str\u00e1nky budou sn\u00e1ze pou\u017e\u00edvat.<\/p><p>Pravideln\u00e9 sledov\u00e1n\u00ed, data od skute\u010dn\u00fdch u\u017eivatel\u016f a c\u00edlen\u00e1 optimalizace mohou web\u016fm pomoci dlouhodob\u011b udr\u017eet dobr\u00e9 v\u00fdsledky Core Web Vitals<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b7fca63 e-flex e-con-boxed e-con e-parent\" data-id=\"b7fca63\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d644bb7 e-con-full e-flex e-con e-child\" data-id=\"d644bb7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-36fd715 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"36fd715\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-question-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 448c-110.532 0-200-89.431-200-200 0-110.495 89.472-200 200-200 110.491 0 200 89.471 200 200 0 110.53-89.431 200-200 200zm107.244-255.2c0 67.052-72.421 68.084-72.421 92.863V300c0 6.627-5.373 12-12 12h-45.647c-6.627 0-12-5.373-12-12v-8.659c0-35.745 27.1-50.034 47.579-61.516 17.561-9.845 28.324-16.541 28.324-29.579 0-17.246-21.999-28.693-39.784-28.693-23.189 0-33.894 10.977-48.942 29.969-4.057 5.12-11.46 6.071-16.666 2.124l-27.824-21.098c-5.107-3.872-6.251-11.066-2.644-16.363C184.846 131.491 214.94 112 261.794 112c49.071 0 101.45 38.304 101.45 88.8zM298 368c0 23.159-18.841 42-42 42s-42-18.841-42-42 18.841-42 42-42 42 18.841 42 42z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-11f1edb e-con-full e-flex e-con e-child\" data-id=\"11f1edb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22ba42f elementor-widget elementor-widget-text-editor\" data-id=\"22ba42f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c7e5b5 elementor-widget elementor-widget-text-editor\" data-id=\"6c7e5b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>1. Jak\u00fd je rozd\u00edl mezi daty z ter\u00e9nu a laboratorn\u00edmi daty?<\/h3><p style=\"padding-left: 40px;\">Data z ter\u00e9nu poch\u00e1zej\u00ed od skute\u010dn\u00fdch u\u017eivatel\u016f, kte\u0159\u00ed web nav\u0161t\u011bvuj\u00ed, zat\u00edmco laboratorn\u00ed data se shroma\u017e\u010fuj\u00ed v kontrolovan\u00e9m testovac\u00edm prost\u0159ed\u00ed. Data z ter\u00e9nu odr\u00e1\u017eej\u00ed skute\u010dn\u00fd u\u017eivatelsk\u00fd z\u00e1\u017eitek, kde\u017eto laboratorn\u00ed data pom\u00e1haj\u00ed v\u00fdvoj\u00e1\u0159\u016fm probl\u00e9my s v\u00fdkonem reprodukovat a diagnostikovat.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af90c6d elementor-widget elementor-widget-text-editor\" data-id=\"af90c6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>2. Jak mohu zlep\u0161it sv\u00e9 v\u00fdsledky Core Web Vitals?<\/h3><p style=\"padding-left: 40px;\">Core Web Vitals m\u016f\u017eete zlep\u0161it optimalizac\u00ed obr\u00e1zk\u016f, omezen\u00edm zbyte\u010dn\u00e9ho JavaScriptu, zkr\u00e1cen\u00edm doby odezvy serveru, zapnut\u00edm cachov\u00e1n\u00ed a p\u0159edch\u00e1zen\u00edm ne\u010dekan\u00fdm posun\u016fm rozvr\u017een\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>V\u00fdkon webu nen\u00ed jen o tom, jak rychle se str\u00e1nka na\u010dte. I kdy\u017e se obsah zobraz\u00ed b\u011bhem n\u011bkolika sekund, pomal\u00e1 odezva tla\u010d\u00edtek nebo ne\u010dekan\u00e9 posuny rozvr\u017een\u00ed mohou n\u00e1v\u0161t\u011bvn\u00edky frustrovat a zhor\u0161it jejich z\u00e1\u017eitek. Jak tedy zjistit, zda v\u00e1\u0161 web funguje dob\u0159e? Core Web Vitals jsou kl\u00ed\u010dov\u00e9 metriky v\u00fdkonu od Googlu, kter\u00e9 m\u011b\u0159\u00ed rychlost na\u010d\u00edt\u00e1n\u00ed, interaktivitu [\u2026]<\/p>\n","protected":false},"author":7,"featured_media":3520,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3674","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Jak optimalizovat web pomoc\u00ed Core Web Vitals?<\/title>\n<meta name=\"description\" content=\"Co jsou Core Web Vitals? 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