{"id":3714,"date":"2026-10-29T09:30:00","date_gmt":"2026-10-29T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/vi\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/"},"modified":"2026-11-11T07:57:48","modified_gmt":"2026-11-11T07:57:48","slug":"what-are-core-web-vitals-how-they-impact-site-speed-vi","status":"publish","type":"post","link":"https:\/\/potenting.com\/vi\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/","title":{"rendered":"Core Web Vitals l\u00e0 g\u00ec &amp; \u1ea3nh h\u01b0\u1edfng th\u1ebf n\u00e0o \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 website?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3714\" class=\"elementor elementor-3714\" 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;Kh\\u00f4ng t\\u00ecm th\\u1ea5y ti\\u00eau \\u0111\\u1ec1 n\\u00e0o tr\\u00ean trang n\\u00e0y.&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\tM\u1ee5c l\u1ee5c\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>Hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t website kh\u00f4ng ch\u1ec9 n\u1eb1m \u1edf vi\u1ec7c trang t\u1ea3i nhanh \u0111\u1ebfn m\u1ee9c n\u00e0o. Ngay c\u1ea3 khi n\u1ed9i dung hi\u1ec3n th\u1ecb ch\u1ec9 trong v\u00e0i gi\u00e2y, c\u00e1c n\u00fat ph\u1ea3n h\u1ed3i ch\u1eadm ho\u1eb7c b\u1ed1 c\u1ee5c b\u1ecb x\u00ea d\u1ecbch b\u1ea5t ng\u1edd v\u1eabn c\u00f3 th\u1ec3 khi\u1ebfn kh\u00e1ch truy c\u1eadp kh\u00f3 ch\u1ecbu v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m c\u1ee7a h\u1ecd. V\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft website c\u1ee7a b\u1ea1n c\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t hay kh\u00f4ng? Core Web Vitals l\u00e0 b\u1ed9 ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t quan tr\u1ecdng c\u1ee7a Google, \u0111o l\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh. Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 ba ch\u1ec9 s\u1ed1 Core Web Vitals, c\u00e1c ng\u01b0\u1ee1ng khuy\u1ebfn ngh\u1ecb c\u1ee7a ch\u00fang, c\u0169ng nh\u01b0 nh\u1eefng c\u00f4ng c\u1ee5 gi\u00fap \u0111o l\u01b0\u1eddng v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t website.<\/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>Core Web Vitals l\u00e0 g\u00ec?<\/h2><p>Core Web Vitals l\u00e0 t\u1eadp h\u1ee3p c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t do Google \u0111\u01b0a ra nh\u1eb1m \u0111o l\u01b0\u1eddng nh\u1eefng kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng tr\u00ean website. C\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y t\u1eadp trung v\u00e0o ba y\u1ebfu t\u1ed1 ch\u00ednh: hi\u1ec7u su\u1ea5t t\u1ea3i trang, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh. N\u00f3i c\u00e1ch kh\u00e1c, ch\u00fang gi\u00fap ch\u1ee7 s\u1edf h\u1eefu website bi\u1ebft trang t\u1ea3i nhanh \u0111\u1ebfn \u0111\u00e2u, ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi trang m\u01b0\u1ee3t m\u00e0 th\u1ebf n\u00e0o v\u00e0 n\u1ed9i dung c\u00f3 gi\u1eef \u1ed5n \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh t\u1ea3i hay kh\u00f4ng.<\/p><p>Hi\u1ec7u su\u1ea5t website kh\u00f4ng ch\u1ec9 l\u00e0 vi\u1ec7c trang m\u1edf ra nhanh \u0111\u1ebfn m\u1ee9c n\u00e0o. M\u1ed9t website c\u00f3 th\u1ec3 t\u1ea3i n\u1ed9i dung trong th\u1eddi gian ng\u1eafn, nh\u01b0ng n\u1ebfu ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1edd m\u1edbi b\u1ea5m \u0111\u01b0\u1ee3c n\u00fat ho\u1eb7c b\u1ed1 c\u1ee5c trang thay \u0111\u1ed5i b\u1ea5t ng\u1edd, tr\u1ea3i nghi\u1ec7m t\u1ed5ng th\u1ec3 v\u1eabn c\u00f3 th\u1ec3 k\u00e9m. Core Web Vitals gi\u00fap ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00e0 \u0111\u01b0a ra c\u00e1c m\u1ee5c ti\u00eau c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t website.<\/p><p>Hi\u1ec7n nay Google s\u1eed d\u1ee5ng ba ch\u1ec9 s\u1ed1 Core Web Vitals: Largest Contentful Paint (LCP), Interaction to Next Paint (INP) v\u00e0 Cumulative Layout Shift (CLS). M\u1ed7i ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng m\u1ed9t ph\u1ea7n kh\u00e1c nhau c\u1ee7a tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng, v\u00ec v\u1eady c\u1ea3i thi\u1ec7n m\u1ed9t ch\u1ec9 s\u1ed1 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 hai ch\u1ec9 s\u1ed1 c\u00f2n l\u1ea1i c\u0169ng s\u1ebd \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n theo.<\/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>V\u00ec sao Core Web Vitals quan tr\u1ecdng?<\/h2><p>M\u1ed9t website c\u1ea7n mang l\u1ea1i tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0 v\u00e0 \u0111\u00e1ng tin c\u1eady cho kh\u00e1ch truy c\u1eadp. Khi trang t\u1ea3i qu\u00e1 l\u00e2u, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 r\u1eddi \u0111i tr\u01b0\u1edbc khi ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng tin h\u1ecd c\u1ea7n. T\u01b0\u01a1ng t\u1ef1, n\u1ebfu c\u00e1c n\u00fat ph\u1ea3n h\u1ed3i ch\u1eadm ho\u1eb7c c\u00e1c th\u00e0nh ph\u1ea7n tr\u00ean trang di chuy\u1ec3n b\u1ea5t ng\u1edd, kh\u00e1ch truy c\u1eadp c\u00f3 th\u1ec3 c\u1ea3m th\u1ea5y b\u1ef1c b\u1ed9i v\u00e0 g\u1eb7p kh\u00f3 kh\u0103n khi ho\u00e0n th\u00e0nh c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh.<\/p><p>Core Web Vitals gi\u00fap ch\u1ee7 s\u1edf h\u1eefu website ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y d\u1ef1a tr\u00ean d\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c, thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o c\u1ea3m nh\u1eadn c\u00e1 nh\u00e2n. V\u00ed d\u1ee5, m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 ki\u1ec3m tra website tr\u00ean m\u1ed9t m\u00e1y t\u00ednh m\u1ea1nh v\u00e0 th\u1ea5y trang t\u1ea3i r\u1ea5t nhanh. Tuy nhi\u00ean, kh\u00e1ch truy c\u1eadp d\u00f9ng thi\u1ebft b\u1ecb di \u0111\u1ed9ng \u0111\u1eddi c\u0169 ho\u1eb7c k\u1ebft n\u1ed1i internet ch\u1eadm h\u01a1n c\u00f3 th\u1ec3 ph\u1ea3i ch\u1edd l\u00e2u h\u01a1n nhi\u1ec1u.<\/p><p>Ch\u00ednh nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y khi\u1ebfn vi\u1ec7c gi\u00e1m s\u00e1t hi\u1ec7u su\u1ea5t tr\u1edf n\u00ean quan tr\u1ecdng. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch d\u1eef li\u1ec7u Core Web Vitals, l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh nh\u1eefng ph\u1ea7n n\u00e0o c\u1ee7a website c\u1ea7n c\u1ea3i thi\u1ec7n v\u00e0 \u0111\u00e1nh gi\u00e1 xem c\u00e1c n\u1ed7 l\u1ef1c t\u1ed1i \u01b0u c\u00f3 mang l\u1ea1i k\u1ebft qu\u1ea3 nh\u01b0 mong \u0111\u1ee3i hay kh\u00f4ng.<\/p><p>Core Web Vitals c\u0169ng li\u00ean quan \u0111\u1ebfn t\u1ed1i \u01b0u h\u00f3a c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (SEO). Google s\u1eed d\u1ee5ng c\u00e1c t\u00edn hi\u1ec7u tr\u1ea3i nghi\u1ec7m trang trong h\u1ec7 th\u1ed1ng x\u1ebfp h\u1ea1ng c\u1ee7a m\u00ecnh, nh\u01b0ng \u0111i\u1ec3m Core Web Vitals t\u1ed1t kh\u00f4ng \u0111\u1ea3m b\u1ea3o th\u1ee9 h\u1ea1ng cao h\u01a1n. N\u1ed9i dung ph\u00f9 h\u1ee3p v\u00e0 nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c v\u1eabn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. V\u00ec v\u1eady, vi\u1ec7c c\u1ea3i thi\u1ec7n c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t ph\u1ea7n trong chi\u1ebfn l\u01b0\u1ee3c t\u1ed5ng th\u1ec3 nh\u1eb1m x\u00e2y d\u1ef1ng m\u1ed9t website h\u1eefu \u00edch, d\u1ec5 ti\u1ebfp c\u1eadn v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/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>Ba ch\u1ec9 s\u1ed1 Core Web Vitals l\u00e0 g\u00ec?<\/h2><p>M\u1ed7i ch\u1ec9 s\u1ed1 Core Web Vitals t\u1eadp trung v\u00e0o m\u1ed9t kh\u00eda c\u1ea1nh c\u1ee5 th\u1ec3 c\u1ee7a hi\u1ec7u su\u1ea5t website. Hi\u1ec3u r\u00f5 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng s\u1ebd gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 l\u1ef1a ch\u1ecdn k\u1ef9 thu\u1eadt t\u1ed1i \u01b0u ph\u00f9 h\u1ee3p.<\/p><ul><li><h3>Largest Contentful Paint (LCP) l\u00e0 g\u00ec?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Largest Contentful Paint (LCP) \u0111o th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 h\u00ecnh \u1ea3nh ho\u1eb7c kh\u1ed1i v\u0103n b\u1ea3n l\u1edbn nh\u1ea5t trong khung nh\u00ecn ban \u0111\u1ea7u hi\u1ec3n th\u1ecb. Ch\u1ec9 s\u1ed1 n\u00e0y gi\u00fap \u01b0\u1edbc t\u00ednh th\u1eddi \u0111i\u1ec3m n\u1ed9i dung ch\u00ednh c\u1ee7a trang tr\u1edf n\u00ean hi\u1ec3n th\u1ecb v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p><p style=\"padding-left: 40px;\">V\u00ed d\u1ee5, h\u00e3y h\u00ecnh dung m\u1ed9t kh\u00e1ch truy c\u1eadp m\u1edf m\u1ed9t b\u00e0i vi\u1ebft tr\u00ean blog. N\u1ec1n trang v\u00e0 menu \u0111i\u1ec1u h\u01b0\u1edbng c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c, nh\u01b0ng ti\u00eau \u0111\u1ec1 ch\u00ednh ho\u1eb7c h\u00ecnh \u1ea3nh n\u1ed5i b\u1eadt c\u00f3 th\u1ec3 m\u1ea5t v\u00e0i gi\u00e2y m\u1edbi t\u1ea3i xong. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, kh\u00e1ch truy c\u1eadp c\u00f3 th\u1ec3 c\u1ea3m th\u1ea5y trang v\u1eabn \u0111ang t\u1ea3i, d\u00f9 m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n \u0111\u00e3 hi\u1ec3n th\u1ecb. \u0110i\u1ec3m LCP t\u1ed1t n\u00ean \u1edf m\u1ee9c 2,5 gi\u00e2y tr\u1edf xu\u1ed1ng. N\u1ebfu gi\u00e1 tr\u1ecb n\u1eb1m trong kho\u1ea3ng t\u1eeb 2,5 \u0111\u1ebfn 4 gi\u00e2y, trang c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. Gi\u00e1 tr\u1ecb LCP l\u1edbn h\u01a1n 4 gi\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 k\u00e9m.<\/p><p style=\"padding-left: 40px;\">Nhi\u1ec1u y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn LCP, bao g\u1ed3m th\u1eddi gian ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7 ch\u1eadm, h\u00ecnh \u1ea3nh dung l\u01b0\u1ee3ng l\u1edbn, CSS v\u00e0 JavaScript ch\u1eb7n hi\u1ec3n th\u1ecb, c\u0169ng nh\u01b0 s\u1ef1 ch\u1eadm tr\u1ec5 trong vi\u1ec7c ph\u00e1t hi\u1ec7n n\u1ed9i dung ch\u00ednh.<\/p><p style=\"padding-left: 40px;\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n LCP, ch\u1ee7 s\u1edf h\u1eefu website c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">T\u1ed1i \u01b0u h\u00ecnh \u1ea3nh:<\/span> Gi\u1ea3m dung l\u01b0\u1ee3ng t\u1ec7p h\u00ecnh \u1ea3nh v\u00e0 s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng hi\u1ec7n \u0111\u1ea1i nh\u01b0 WebP ho\u1eb7c AVIF khi ph\u00f9 h\u1ee3p.<\/li><li><span style=\"color: #a26f9a;\">C\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7:<\/span> S\u1eed d\u1ee5ng t\u00e0i nguy\u00ean hosting hi\u1ec7u qu\u1ea3, b\u1ed9 nh\u1edb \u0111\u1ec7m (caching) v\u00e0 m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) khi ph\u00f9 h\u1ee3p v\u1edbi website.<\/li><li><span style=\"color: #a26f9a;\">\u01afu ti\u00ean n\u1ed9i dung ch\u00ednh:<\/span> \u0110\u1ea3m b\u1ea3o tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c h\u00ecnh \u1ea3nh quan tr\u1ecdng tr\u1ef1c ti\u1ebfp t\u1eeb m\u00e3 ngu\u1ed3n HTML v\u00e0 \u01b0u ti\u00ean t\u1ea3i ch\u00fang khi c\u1ea7n thi\u1ebft.<\/li><li><span style=\"color: #a26f9a;\">Gi\u1ea3m t\u00e0i nguy\u00ean ch\u1eb7n hi\u1ec3n th\u1ecb:<\/span> T\u1ed1i \u01b0u c\u00e1c t\u1ec7p CSS v\u00e0 JavaScript ng\u0103n tr\u00ecnh duy\u1ec7t hi\u1ec3n th\u1ecb n\u1ed9i dung ch\u00ednh.<\/li><li><span style=\"color: #a26f9a;\">Tr\u00e1nh lazy-load h\u00ecnh \u1ea3nh LCP:<\/span> N\u1ebfu m\u1ed9t h\u00ecnh \u1ea3nh c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 ph\u1ea7n t\u1eed LCP, vi\u1ec7c tr\u00ec ho\u00e3n t\u1ea3i n\u00f3 c\u00f3 th\u1ec3 khi\u1ebfn trang c\u00f3 v\u1ebb ch\u1eadm h\u01a1n.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">Nh\u1eefng k\u1ef9 thu\u1eadt n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3m th\u1eddi gian ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1edd n\u1ed9i dung ch\u00ednh xu\u1ea5t hi\u1ec7n. Tuy nhi\u00ean, gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 nh\u1ea5t c\u00f2n t\u00f9y thu\u1ed9c v\u00e0o nguy\u00ean nh\u00e2n g\u00e2y ch\u1eadm tr\u1ec5, v\u00ec v\u1eady \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u0111o l\u01b0\u1eddng trang tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i.<\/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>Interaction to Next Paint (INP) l\u00e0 g\u00ec?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Interaction to Next Paint (INP) \u0111o m\u1ee9c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a website khi ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. Ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 tr\u1ec5 gi\u1eefa m\u1ed9t t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1ea5p v\u00e0o n\u00fat ho\u1eb7c nh\u1ea5n ph\u00edm, v\u00e0 l\u1ea7n c\u1eadp nh\u1eadt h\u00ecnh \u1ea3nh ti\u1ebfp theo do tr\u00ecnh duy\u1ec7t hi\u1ec3n th\u1ecb.<\/p><p style=\"padding-left: 40px;\">H\u00e3y xem x\u00e9t m\u1ed9t c\u1eeda h\u00e0ng tr\u1ef1c tuy\u1ebfn, n\u01a1i kh\u00e1ch truy c\u1eadp nh\u1ea5p v\u00e0o n\u00fat Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng. N\u1ebfu tr\u00ecnh duy\u1ec7t m\u1ea5t m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u00e1ng k\u1ec3 \u0111\u1ec3 c\u1eadp nh\u1eadt gi\u1ecf h\u00e0ng, kh\u00e1ch truy c\u1eadp c\u00f3 th\u1ec3 ngh\u0129 r\u1eb1ng n\u00fat kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng v\u00e0 nh\u1ea5p l\u1ea1i l\u1ea7n n\u1eefa. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn v\u00e0 th\u1eadm ch\u00ed d\u1eabn \u0111\u1ebfn c\u00e1c thao t\u00e1c b\u1ecb l\u1eb7p l\u1ea1i.<\/p><p style=\"padding-left: 40px;\">INP gi\u00fap ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 v\u1eady b\u1eb1ng c\u00e1ch \u0111o kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i c\u1ee7a trang trong su\u1ed1t qu\u00e1 tr\u00ecnh ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp. Kh\u00e1c v\u1edbi First Input Delay (FID), v\u1ed1n ch\u1ec9 \u0111o \u0111\u1ed9 tr\u1ec5 tr\u01b0\u1edbc khi tr\u00ecnh duy\u1ec7t b\u1eaft \u0111\u1ea7u x\u1eed l\u00fd t\u01b0\u01a1ng t\u00e1c \u0111\u1ea7u ti\u00ean, INP xem x\u00e9t tr\u1ea3i nghi\u1ec7m t\u01b0\u01a1ng t\u00e1c r\u1ed9ng h\u01a1n trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a trang. \u0110i\u1ec3m INP t\u1ed1t l\u00e0 200 mili gi\u00e2y tr\u1edf xu\u1ed1ng. C\u00e1c gi\u00e1 tr\u1ecb l\u1edbn h\u01a1n 200 mili gi\u00e2y v\u00e0 t\u1ed1i \u0111a 500 mili gi\u00e2y c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, c\u00f2n c\u00e1c gi\u00e1 tr\u1ecb tr\u00ean 500 mili gi\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 k\u00e9m.<\/p><p style=\"padding-left: 40px;\">JavaScript l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn khi\u1ebfn INP k\u00e9m, v\u00ec tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 ph\u1ea3i th\u1ef1c thi c\u00e1c script tr\u01b0\u1edbc khi ph\u1ea3n h\u1ed3i thao t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 hi\u1ec3n th\u1ecb c\u1eadp nh\u1eadt. C\u00e1c t\u00e1c v\u1ee5 ch\u1ea1y l\u00e2u c\u00f3 th\u1ec3 ng\u0103n tr\u00ecnh duy\u1ec7t x\u1eed l\u00fd t\u01b0\u01a1ng t\u00e1c k\u1ecbp th\u1eddi.<\/p><p style=\"padding-left: 40px;\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n INP, l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt sau:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">Gi\u1ea3m JavaScript kh\u00f4ng c\u1ea7n thi\u1ebft:<\/span> Lo\u1ea1i b\u1ecf m\u00e3 kh\u00f4ng s\u1eed d\u1ee5ng v\u00e0 tr\u00e1nh t\u1ea3i c\u00e1c script kh\u00f4ng c\u1ea7n cho trang hi\u1ec7n t\u1ea1i.<\/li><li><span style=\"color: #a26f9a;\">Chia nh\u1ecf c\u00e1c t\u00e1c v\u1ee5 d\u00e0i:<\/span> Chia c\u00e1c t\u00e1c v\u1ee5 JavaScript l\u1edbn th\u00e0nh nhi\u1ec1u t\u00e1c v\u1ee5 nh\u1ecf h\u01a1n \u0111\u1ec3 tr\u00ecnh duy\u1ec7t c\u00f3 th\u00eam c\u01a1 h\u1ed9i x\u1eed l\u00fd t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li><li><span style=\"color: #a26f9a;\">T\u1ed1i \u01b0u tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n:<\/span> Gi\u1eef cho c\u00e1c h\u00e0m li\u00ean quan \u0111\u1ebfn t\u01b0\u01a1ng t\u00e1c c\u00e0ng \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 c\u00e0ng t\u1ed1t.<\/li><li><span style=\"color: #a26f9a;\">Tr\u00e1nh c\u1eadp nh\u1eadt DOM kh\u00f4ng c\u1ea7n thi\u1ebft:<\/span> C\u1eadp nh\u1eadt qu\u00e1 nhi\u1ec1u ph\u1ea7n t\u1eed c\u00f9ng l\u00fac c\u00f3 th\u1ec3 l\u00e0m t\u0103ng th\u1eddi gian hi\u1ec3n th\u1ecb v\u00e0 tr\u00ec ho\u00e3n l\u1ea7n c\u1eadp nh\u1eadt h\u00ecnh \u1ea3nh ti\u1ebfp theo.<\/li><li><span style=\"color: #a26f9a;\">Gi\u1ea3m script c\u1ee7a b\u00ean th\u1ee9 ba:<\/span> C\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch, script qu\u1ea3ng c\u00e1o v\u00e0 d\u1ecbch v\u1ee5 nh\u00fang c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n t\u00e0i nguy\u00ean x\u1eed l\u00fd v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">C\u1ea3i thi\u1ec7n INP kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 gi\u1ea3m t\u1ed5ng dung l\u01b0\u1ee3ng c\u00e1c t\u1ec7p JavaScript. L\u1eadp tr\u00ecnh vi\u00ean c\u00f2n c\u1ea7n hi\u1ec3u khi n\u00e0o script \u0111\u01b0\u1ee3c th\u1ef1c thi v\u00e0 tr\u00ecnh duy\u1ec7t ph\u1ea3i x\u1eed l\u00fd bao nhi\u00eau c\u00f4ng vi\u1ec7c sau m\u1ed7i t\u01b0\u01a1ng t\u00e1c.<\/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>Cumulative Layout Shift (CLS) l\u00e0 g\u00ec?<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Cumulative Layout Shift (CLS) \u0111o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh c\u1ee7a m\u1ed9t trang web. Ch\u1ec9 s\u1ed1 n\u00e0y t\u1eadp trung v\u00e0o nh\u1eefng thay \u0111\u1ed5i b\u1ea5t ng\u1edd v\u1ec1 v\u1ecb tr\u00ed c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed hi\u1ec3n th\u1ecb trong khi trang \u0111ang \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb.<\/p><p style=\"padding-left: 40px;\">V\u00ed d\u1ee5, h\u00e3y h\u00ecnh dung m\u1ed9t kh\u00e1ch truy c\u1eadp \u0111ang \u0111\u1ecdc b\u00e0i vi\u1ebft th\u00ec \u0111\u1ed9t nhi\u00ean th\u1ea5y v\u0103n b\u1ea3n b\u1ecb \u0111\u1ea9y xu\u1ed1ng v\u00ec m\u1ed9t qu\u1ea3ng c\u00e1o v\u1eeba xu\u1ea5t hi\u1ec7n ph\u00eda tr\u00ean. N\u1ebfu kh\u00e1ch truy c\u1eadp \u0111ang \u0111\u1ecbnh nh\u1ea5p v\u00e0o m\u1ed9t li\u00ean k\u1ebft, chuy\u1ec3n \u0111\u1ed9ng b\u1ea5t ng\u1edd n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn h\u1ecd nh\u1ea5p nh\u1ea7m v\u00e0o m\u1ed9t ph\u1ea7n t\u1eed kh\u00e1c. Nh\u1eefng thay \u0111\u1ed5i b\u1ed1 c\u1ee5c nh\u01b0 v\u1eady c\u00f3 th\u1ec3 khi\u1ebfn website kh\u00f3 s\u1eed d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng, n\u01a1i v\u00f9ng hi\u1ec3n th\u1ecb b\u1ecb gi\u1edbi h\u1ea1n. \u0110i\u1ec3m CLS t\u1ed1t l\u00e0 0,1 tr\u1edf xu\u1ed1ng. \u0110i\u1ec3m l\u1edbn h\u01a1n 0,1 v\u00e0 t\u1ed1i \u0111a 0,25 c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, c\u00f2n \u0111i\u1ec3m tr\u00ean 0,25 \u0111\u01b0\u1ee3c xem l\u00e0 k\u00e9m.<\/p><p style=\"padding-left: 40px;\">M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng x\u00ea d\u1ecbch b\u1ed1 c\u1ee5c b\u1ea5t ng\u1edd. H\u00ecnh \u1ea3nh kh\u00f4ng \u0111\u01b0\u1ee3c khai b\u00e1o k\u00edch th\u01b0\u1edbc, qu\u1ea3ng c\u00e1o \u0111\u01b0\u1ee3c ch\u00e8n \u0111\u1ed9ng, n\u1ed9i dung t\u1ea3i mu\u1ed9n v\u00e0 ph\u00f4ng ch\u1eef web l\u00e0m thay \u0111\u1ed5i giao di\u1ec7n v\u0103n b\u1ea3n \u0111\u1ec1u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh.<\/p><p style=\"padding-left: 40px;\">C\u00e1c k\u1ef9 thu\u1eadt sau \u0111\u00e2y c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n CLS:<\/p><ul><li style=\"list-style-type: none;\"><ul><li><span style=\"color: #a26f9a;\">Khai b\u00e1o k\u00edch th\u01b0\u1edbc h\u00ecnh \u1ea3nh:<\/span> Ch\u1ec9 \u0111\u1ecbnh chi\u1ec1u r\u1ed9ng v\u00e0 chi\u1ec1u cao c\u1ee7a h\u00ecnh \u1ea3nh ho\u1eb7c s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 khung h\u00ecnh (aspect ratio) trong CSS \u0111\u1ec3 d\u00e0nh s\u1eb5n kh\u00f4ng gian c\u1ea7n thi\u1ebft tr\u01b0\u1edbc khi h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c t\u1ea3i.<\/li><li><span style=\"color: #a26f9a;\">D\u00e0nh s\u1eb5n kh\u00f4ng gian cho qu\u1ea3ng c\u00e1o:<\/span> Ph\u00e2n b\u1ed5 \u0111\u1ee7 kh\u00f4ng gian cho v\u00f9ng ch\u1ee9a qu\u1ea3ng c\u00e1o \u0111\u1ec3 n\u1ed9i dung xung quanh kh\u00f4ng b\u1ecb d\u1ecbch chuy\u1ec3n khi qu\u1ea3ng c\u00e1o xu\u1ea5t hi\u1ec7n.<\/li><li><span style=\"color: #a26f9a;\">Tr\u00e1nh ch\u00e8n n\u1ed9i dung ph\u00eda tr\u00ean n\u1ed9i dung hi\u1ec7n c\u00f3:<\/span> N\u1ebfu c\u1ea7n hi\u1ec3n th\u1ecb ph\u1ea7n t\u1eed m\u1edbi, h\u00e3y \u0111\u1eb7t ch\u00fang \u1edf v\u1ecb tr\u00ed kh\u00f4ng l\u00e0m d\u1ecbch chuy\u1ec3n b\u1ea5t ng\u1edd n\u1ed9i dung m\u00e0 ng\u01b0\u1eddi d\u00f9ng \u0111ang xem.<\/li><li><span style=\"color: #a26f9a;\">T\u1ed1i \u01b0u vi\u1ec7c t\u1ea3i ph\u00f4ng ch\u1eef:<\/span> S\u1eed d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c t\u1ea3i ph\u00f4ng ch\u1eef ph\u00f9 h\u1ee3p v\u00e0 ph\u00f4ng ch\u1eef d\u1ef1 ph\u00f2ng \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1eefng thay \u0111\u1ed5i b\u1ea5t ng\u1edd trong b\u1ed1 c\u1ee5c v\u0103n b\u1ea3n.<\/li><li><span style=\"color: #a26f9a;\">S\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng CSS ph\u00f9 h\u1ee3p:<\/span> Khi c\u00f3 th\u1ec3, n\u00ean \u01b0u ti\u00ean c\u00e1c hi\u1ec7u \u1ee9ng d\u1ef1a tr\u00ean thu\u1ed9c t\u00ednh nh\u01b0 transform v\u00e0 opacity thay v\u00ec c\u00e1c thu\u1ed9c t\u00ednh g\u00e2y thay \u0111\u1ed5i b\u1ed1 c\u1ee5c.<\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">C\u1ea7n l\u01b0u \u00fd r\u1eb1ng kh\u00f4ng ph\u1ea3i m\u1ecdi s\u1ef1 x\u00ea d\u1ecbch b\u1ed1 c\u1ee5c \u0111\u1ec1u c\u00f3 h\u1ea1i. M\u1ed9t thay \u0111\u1ed5i x\u1ea3y ra tr\u1ef1c ti\u1ebfp \u0111\u1ec3 ph\u1ea3n h\u1ed3i t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 l\u00e0 \u0111i\u1ec1u \u0111\u01b0\u1ee3c mong \u0111\u1ee3i. CLS t\u1eadp trung v\u00e0o s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh b\u1ea5t ng\u1edd v\u00e0 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh \u0111i\u1ec3m d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng v\u00e0 kho\u1ea3ng c\u00e1ch c\u1ee7a s\u1ef1 x\u00ea d\u1ecbch b\u1ed1 c\u1ee5c.<\/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>C\u00e1c ng\u01b0\u1ee1ng Core Web Vitals \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb l\u00e0 g\u00ec?<\/h2><p>Google \u0111\u01b0a ra c\u00e1c ng\u01b0\u1ee1ng c\u1ee5 th\u1ec3 gi\u00fap ch\u1ee7 s\u1edf h\u1eefu website x\u00e1c \u0111\u1ecbnh trang c\u1ee7a h\u1ecd c\u00f3 mang l\u1ea1i tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng t\u1ed1t hay kh\u00f4ng. C\u00e1c ng\u01b0\u1ee1ng n\u00e0y chia hi\u1ec7u su\u1ea5t th\u00e0nh ba m\u1ee9c: t\u1ed1t, c\u1ea7n c\u1ea3i thi\u1ec7n v\u00e0 k\u00e9m.<\/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>C\u00e1c ng\u01b0\u1ee1ng n\u00e0y gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean \u0111\u00e1nh gi\u00e1 t\u1eebng ch\u1ec9 s\u1ed1 m\u1ed9t c\u00e1ch ri\u00eang bi\u1ec7t. Tuy nhi\u00ean, ch\u1ec9 m\u1ed9t l\u1ea7n ki\u1ec3m tra l\u00e0 ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh website c\u00f3 mang l\u1ea1i tr\u1ea3i nghi\u1ec7m t\u1ed1t m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh hay kh\u00f4ng.<\/p><p>Google khuy\u1ebfn ngh\u1ecb \u0111\u00e1nh gi\u00e1 Core Web Vitals \u1edf ph\u00e2n v\u1ecb th\u1ee9 75 c\u1ee7a c\u00e1c l\u01b0\u1ee3t truy c\u1eadp trang, v\u1edbi k\u1ebft qu\u1ea3 tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 m\u00e1y t\u00ednh \u0111\u01b0\u1ee3c xem x\u00e9t ri\u00eang. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u00edt nh\u1ea5t 75% s\u1ed1 l\u01b0\u1ee3t truy c\u1eadp \u0111\u01b0\u1ee3c \u0111o ph\u1ea3i \u0111\u1ea1t ng\u01b0\u1ee1ng t\u1ed1t \u0111\u1ed1i v\u1edbi t\u1eebng ch\u1ec9 s\u1ed1.<\/p><p>V\u00ed d\u1ee5, gi\u1ea3 s\u1eed m\u1ed9t website c\u00f3 gi\u00e1 tr\u1ecb LCP l\u00e0 2 gi\u00e2y \u1edf ph\u00e2n v\u1ecb th\u1ee9 75. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 75% s\u1ed1 l\u01b0\u1ee3t truy c\u1eadp trang \u0111\u01b0\u1ee3c \u0111o c\u00f3 LCP t\u1eeb 2 gi\u00e2y tr\u1edf xu\u1ed1ng, t\u1ee9c l\u00e0 \u0111\u1ea1t ng\u01b0\u1ee1ng khuy\u1ebfn ngh\u1ecb.<\/p><p>M\u1ed9t website n\u00ean h\u01b0\u1edbng t\u1edbi vi\u1ec7c \u0111\u1ea1t ng\u01b0\u1ee1ng t\u1ed1t \u1edf c\u1ea3 ba ch\u1ec9 s\u1ed1, thay v\u00ec ch\u1ec9 t\u1eadp trung v\u00e0o ch\u1ec9 s\u1ed1 c\u00f3 \u0111i\u1ec3m cao nh\u1ea5t.<\/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>C\u00e1c c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng Core Web Vitals l\u00e0 g\u00ec?<\/h2><p>Core Web Vitals c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng b\u1eb1ng nhi\u1ec1u c\u00f4ng c\u1ee5 do Google cung c\u1ea5p. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean hi\u1ec3u website \u0111ang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o v\u00e0 x\u00e1c \u0111\u1ecbnh nh\u1eefng kh\u00eda c\u1ea1nh c\u1ea7n c\u1ea3i thi\u1ec7n.<\/p><ul><li><h3>PageSpeed Insights<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">PageSpeed Insights l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 h\u1eefu \u00edch nh\u1ea5t \u0111\u1ec3 ki\u1ec3m tra Core Web Vitals. C\u00f4ng c\u1ee5 n\u00e0y cung c\u1ea5p c\u1ea3 d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng th\u1ef1c t\u1ebf (khi c\u00f3 s\u1eb5n) l\u1eabn d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m thu th\u1eadp qua m\u1ed9t b\u00e0i ki\u1ec3m tra m\u00f4 ph\u1ecfng. Ngo\u00e0i ra, n\u00f3 c\u00f2n \u0111\u01b0a ra c\u00e1c g\u1ee3i \u00fd \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t trang.<\/p><ul><li><h3>Google Search Console<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Google Search Console c\u00f3 b\u00e1o c\u00e1o Core Web Vitals cho bi\u1ebft nh\u00f3m trang n\u00e0o mang l\u1ea1i tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng t\u1ed1t v\u00e0 nh\u00f3m n\u00e0o c\u1ea7n c\u1ea3i thi\u1ec7n. B\u00e1o c\u00e1o n\u00e0y s\u1eed d\u1ee5ng d\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u00fap ch\u1ee7 s\u1edf h\u1eefu website ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t tr\u00ean nhi\u1ec1u trang.<\/p><ul><li><h3>Chrome DevTools v\u00e0 Lighthouse<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">Chrome DevTools v\u00e0 Lighthouse gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean ki\u1ec3m tra hi\u1ec7u su\u1ea5t trang trong m\u00f4i tr\u01b0\u1eddng c\u00f3 ki\u1ec3m so\u00e1t. Ch\u00fang c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c th\u1ef1c thi JavaScript, t\u1ea3i h\u00ecnh \u1ea3nh, x\u00ea d\u1ecbch b\u1ed1 c\u1ee5c v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn 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>D\u1eef li\u1ec7u th\u1ef1c t\u1ebf v\u00e0 d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/h2><p>Core Web Vitals c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng hai lo\u1ea1i d\u1eef li\u1ec7u: d\u1eef li\u1ec7u th\u1ef1c t\u1ebf (field data) v\u00e0 d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m (lab data). Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean di\u1ec5n gi\u1ea3i k\u1ebft qu\u1ea3 ki\u1ec3m tra v\u00e0 ch\u1ecdn h\u01b0\u1edbng ti\u1ebfp c\u1eadn ph\u00f9 h\u1ee3p \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t website.<\/p><ul><li><h3>D\u1eef li\u1ec7u th\u1ef1c t\u1ebf<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb ng\u01b0\u1eddi d\u00f9ng th\u1eadt khi h\u1ecd duy\u1ec7t website. Lo\u1ea1i d\u1eef li\u1ec7u n\u00e0y ph\u1ea3n \u00e1nh \u0111i\u1ec1u ki\u1ec7n duy\u1ec7t web th\u1ef1c t\u1ebf, bao g\u1ed3m nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb, k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 t\u01b0\u01a1ng t\u00e1c ng\u01b0\u1eddi d\u00f9ng kh\u00e1c nhau.<\/p><p style=\"padding-left: 40px;\">D\u1eef li\u1ec7u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch \u0111\u1ec3 bi\u1ebft website c\u00f3 \u0111\u00e1p \u1ee9ng c\u00e1c ng\u01b0\u1ee1ng Core Web Vitals m\u00e0 Google khuy\u1ebfn ngh\u1ecb trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/p><ul><li><h3>D\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">D\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c thu th\u1eadp trong m\u00f4i tr\u01b0\u1eddng ki\u1ec3m th\u1eed c\u00f3 ki\u1ec3m so\u00e1t b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 Lighthouse. Lo\u1ea1i d\u1eef li\u1ec7u n\u00e0y gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean t\u00e1i hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 t\u00ecm hi\u1ec3u nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 g\u00e2y ra ch\u00fang.<\/p><p style=\"padding-left: 40px;\">Kh\u00e1c v\u1edbi d\u1eef li\u1ec7u th\u1ef1c t\u1ebf, d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m kh\u00f4ng \u0111\u1ea1i di\u1ec7n cho m\u1ecdi tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng th\u1ef1c. V\u00ec v\u1eady, m\u1ed9t website c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 kh\u00e1c nhau gi\u1eefa b\u00e0i ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 s\u1ed1 li\u1ec7u \u0111o t\u1eeb ng\u01b0\u1eddi d\u00f9ng th\u1ef1c.<\/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>C\u00e1ch c\u1ea3i thi\u1ec7n Core Web Vitals<\/h2><p>\u0110\u1ec3 c\u1ea3i thi\u1ec7n Core Web Vitals, c\u1ea7n x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh. Gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ec9 s\u1ed1 n\u00e0o \u0111ang c\u00f3 k\u1ebft qu\u1ea3 k\u00e9m.<\/p><ul><li><h3>C\u1ea3i thi\u1ec7n Largest Contentful Paint (LCP)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n LCP, l\u1eadp tr\u00ecnh vi\u00ean n\u00ean t\u1eadp trung v\u00e0o vi\u1ec7c t\u1ea3i ph\u1ea7n t\u1eed n\u1ed9i dung hi\u1ec3n th\u1ecb l\u1edbn nh\u1ea5t c\u00e0ng nhanh c\u00e0ng t\u1ed1t. C\u00e1c c\u1ea3i ti\u1ebfn ph\u1ed5 bi\u1ebfn bao g\u1ed3m t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh, ch\u1ecdn m\u1ed9t <a href=\"\/vi\/webhosting\/\">d\u1ecbch v\u1ee5 web hosting<\/a> \u0111\u00e1ng tin c\u1eady, gi\u1ea3m th\u1eddi gian ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7, b\u1eadt b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 tr\u00e1nh nh\u1eefng ch\u1eadm tr\u1ec5 kh\u00f4ng c\u1ea7n thi\u1ebft khi t\u1ea3i c\u00e1c t\u00e0i nguy\u00ean quan tr\u1ecdng.<\/p><ul><li><h3>C\u1ea3i thi\u1ec7n Interaction to Next Paint (INP)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">C\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n INP b\u1eb1ng c\u00e1ch gi\u1ea3m c\u00e1c t\u00e1c v\u1ee5 JavaScript ch\u1ea1y l\u00e2u v\u00e0 h\u1ea1n ch\u1ebf kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c kh\u00f4ng c\u1ea7n thi\u1ebft tr\u00ean lu\u1ed3ng ch\u00ednh. L\u1eadp tr\u00ecnh vi\u00ean c\u0169ng n\u00ean t\u1ed1i \u01b0u tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n v\u00e0 tr\u00e1nh b\u1eaft tr\u00ecnh duy\u1ec7t x\u1eed l\u00fd qu\u00e1 nhi\u1ec1u vi\u1ec7c sau khi ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p chu\u1ed9t, ch\u1ea1m ho\u1eb7c nh\u1eadp li\u1ec7u.<\/p><ul><li><h3>C\u1ea3i thi\u1ec7n Cumulative Layout Shift (CLS)<\/h3><\/li><\/ul><p style=\"padding-left: 40px;\">\u0110\u1ec3 gi\u1ea3m CLS, l\u1eadp tr\u00ecnh vi\u00ean n\u00ean d\u00e0nh s\u1eb5n kh\u00f4ng gian cho h\u00ecnh \u1ea3nh, video, qu\u1ea3ng c\u00e1o v\u00e0 c\u00e1c ph\u1ea7n t\u1eed kh\u00e1c tr\u01b0\u1edbc khi ch\u00fang \u0111\u01b0\u1ee3c t\u1ea3i. Tr\u00e1nh ch\u00e8n n\u1ed9i dung m\u1edbi m\u1ed9t c\u00e1ch b\u1ea5t ng\u1edd ph\u00eda tr\u00ean n\u1ed9i dung hi\u1ec7n c\u00f3 v\u00e0 s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc nh\u1ea5t qu\u00e1n cho c\u00e1c ph\u1ea7n t\u1eed h\u00ecnh \u1ea3nh b\u1ea5t c\u1ee9 khi n\u00e0o c\u00f3 th\u1ec3.<\/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>T\u00f3m l\u1ea1i<\/h2><p>Core Web Vitals gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean hi\u1ec3u ng\u01b0\u1eddi d\u00f9ng tr\u1ea3i nghi\u1ec7m website nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 hi\u1ec7u su\u1ea5t t\u1ea3i trang, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh. B\u1eb1ng c\u00e1ch \u0111o l\u01b0\u1eddng LCP, INP v\u00e0 CLS, ch\u1ee7 s\u1edf h\u1eefu website c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 \u01b0u ti\u00ean nh\u1eefng c\u1ea3i ti\u1ebfn gi\u00fap trang d\u1ec5 s\u1eed d\u1ee5ng h\u01a1n.<\/p><p>Vi\u1ec7c gi\u00e1m s\u00e1t th\u01b0\u1eddng xuy\u00ean, s\u1eed d\u1ee5ng d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng th\u1ef1c v\u00e0 t\u1ed1i \u01b0u c\u00f3 m\u1ee5c ti\u00eau c\u00f3 th\u1ec3 gi\u00fap website duy tr\u00ec k\u1ebft qu\u1ea3 Core Web Vitals t\u1ed1t theo th\u1eddi gian<\/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>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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. D\u1eef li\u1ec7u th\u1ef1c t\u1ebf v\u00e0 d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/h3><p style=\"padding-left: 40px;\">D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u1ebfn t\u1eeb nh\u1eefng ng\u01b0\u1eddi d\u00f9ng th\u1eadt truy c\u1eadp website, c\u00f2n d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c thu th\u1eadp trong m\u00f4i tr\u01b0\u1eddng ki\u1ec3m th\u1eed c\u00f3 ki\u1ec3m so\u00e1t. D\u1eef li\u1ec7u th\u1ef1c t\u1ebf ph\u1ea3n \u00e1nh tr\u1ea3i nghi\u1ec7m th\u1eadt c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, trong khi d\u1eef li\u1ec7u ph\u00f2ng th\u00ed nghi\u1ec7m gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean t\u00e1i hi\u1ec7n v\u00e0 ch\u1ea9n \u0111o\u00e1n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t.<\/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. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111i\u1ec3m Core Web Vitals?<\/h3><p style=\"padding-left: 40px;\">B\u1ea1n c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n Core Web Vitals b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh, gi\u1ea3m JavaScript kh\u00f4ng c\u1ea7n thi\u1ebft, c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7, b\u1eadt b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng x\u00ea d\u1ecbch b\u1ed1 c\u1ee5c b\u1ea5t ng\u1edd.<\/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>Hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t website kh\u00f4ng ch\u1ec9 n\u1eb1m \u1edf vi\u1ec7c trang t\u1ea3i nhanh \u0111\u1ebfn m\u1ee9c n\u00e0o. Ngay c\u1ea3 khi n\u1ed9i dung hi\u1ec3n th\u1ecb ch\u1ec9 trong v\u00e0i gi\u00e2y, c\u00e1c n\u00fat ph\u1ea3n h\u1ed3i ch\u1eadm ho\u1eb7c b\u1ed1 c\u1ee5c b\u1ecb x\u00ea d\u1ecbch b\u1ea5t ng\u1edd v\u1eabn c\u00f3 th\u1ec3 khi\u1ebfn kh\u00e1ch truy c\u1eadp kh\u00f3 ch\u1ecbu v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m [\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-3714","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>C\u00e1ch t\u1ed1i \u01b0u website v\u1edbi Core Web Vitals<\/title>\n<meta name=\"description\" content=\"Core Web Vitals l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u c\u00e1ch \u0111o l\u01b0\u1eddng v\u00e0 c\u1ea3i thi\u1ec7n LCP, INP, CLS \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh v\u00e0 th\u1ee9 h\u1ea1ng Google cho website.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/potenting.com\/vi\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1ch t\u1ed1i \u01b0u website v\u1edbi Core Web Vitals\" \/>\n<meta property=\"og:description\" content=\"Core Web Vitals l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u c\u00e1ch \u0111o l\u01b0\u1eddng v\u00e0 c\u1ea3i thi\u1ec7n LCP, INP, CLS \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh v\u00e0 th\u1ee9 h\u1ea1ng Google cho website.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/potenting.com\/vi\/blog\/what-are-core-web-vitals-how-they-impact-site-speed\/\" \/>\n<meta property=\"og:site_name\" content=\"Potenting Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-29T09:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-11T07:57:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/What-Are-Core-Web-Vitals.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"966\" \/>\n\t<meta property=\"og:image:height\" content=\"665\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Nina Ash\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nina Ash\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"25 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/\"},\"author\":{\"name\":\"Nina Ash\",\"@id\":\"https:\\\/\\\/potenting.com\\\/blog\\\/#\\\/schema\\\/person\\\/743a7b4616c4d55a0ed17f5ac379fcdb\"},\"headline\":\"Core Web Vitals l\u00e0 g\u00ec &amp; \u1ea3nh h\u01b0\u1edfng th\u1ebf n\u00e0o \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 website?\",\"datePublished\":\"2026-10-29T09:30:00+00:00\",\"dateModified\":\"2026-11-11T07:57:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/\"},\"wordCount\":5027,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/potenting.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/What-Are-Core-Web-Vitals.webp\",\"articleSection\":[\"Ch\u01b0a ph\u00e2n lo\u1ea1i\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/\",\"url\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/\",\"name\":\"C\u00e1ch t\u1ed1i \u01b0u website v\u1edbi Core Web Vitals\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/vi\\\/blog\\\/what-are-core-web-vitals-how-they-impact-site-speed\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/potenting.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/What-Are-Core-Web-Vitals.webp\",\"datePublished\":\"2026-10-29T09:30:00+00:00\",\"dateModified\":\"2026-11-11T07:57:48+00:00\",\"description\":\"Core Web Vitals l\u00e0 g\u00ec? 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