{"id":13958,"date":"2022-01-11T00:53:00","date_gmt":"2022-01-10T17:53:00","guid":{"rendered":"https:\/\/speed.family\/?p=13958"},"modified":"2022-01-11T00:53:00","modified_gmt":"2022-01-10T17:53:00","slug":"diem-so-toc-do-khong-quan-trong","status":"publish","type":"post","link":"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/","title":{"rendered":"T\u1ea1i sao \u0111i\u1ec3m s\u1ed1 Google PageSpeed, Pingdom v\u00e0 GTmetrix l\u1ea1i kh\u00f4ng quan tr\u1ecdng"},"content":{"rendered":"\n<p><strong>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft tuy\u1ec7t hay c\u1ee7a Johnny Nguyen (<\/strong>d\u00f9 t\u00f4i kh\u00f4ng \u0111\u1ed3ng \u00fd 100% c\u00e1c \u00fd ki\u1ebfn c\u1ee7a anh \u1ea5y). N\u00f3i l\u00ean bi\u1ebft bao t\u00e2m s\u1ef1 c\u1ee7a ng\u01b0\u1eddi \u0111i <a href=\"https:\/\/kiencang.net\/tang-toc-web-pagespeed-insights\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, t\u1ed1c \u0111\u1ed9 trang<\/a>. V\u00e0 n\u00f3 c\u0169ng gi\u00fap kh\u00e1ch h\u00e0ng th\u00f4i \u00e1m \u1ea3nh b\u1edfi c\u00e1i m\u00e0u xanh c\u1ee7a <a href=\"https:\/\/kiencang.net\/tang-toc-web-pagespeed-insights\/\" target=\"_blank\" rel=\"noreferrer noopener\">Google PageSpeed Insights<\/a> v\u00e0 nh\u1eefng th\u1ee9 t\u01b0\u01a1ng t\u1ef1 kh\u00e1c. Suy cho c\u00f9ng <em>t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 l\u00e0 \u0111\u1ec3 t\u1ed1i \u01b0u cho ng\u01b0\u1eddi d\u00f9ng<\/em>, cho n\u00ean t\u1ed1c \u0111\u1ed9 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t, ng\u01b0\u1eddi d\u00f9ng quan tr\u1ecdng h\u01a1n! N\u00f3i c\u00e1ch kh\u00e1c n\u1ebfu \u0111i\u1ec1u g\u00ec \u0111\u00f3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 nh\u01b0ng l\u1ea1i c\u00f3 l\u1ee3i cho ng\u01b0\u1eddi d\u00f9ng, th\u00ec \u0111i\u1ec3m th\u00e0 th\u1ea5p c\u00f2n h\u01a1n l\u00e0 cao. <\/p>\n\n\n<p>TL;DR: Ng\u1eafn g\u1ecdn th\u00ec b\u00e0i n\u00e0y c\u1ee7a Johnny mang th\u00f4ng \u0111i\u1ec7p t\u01b0\u01a1ng t\u1ef1 nh\u01b0 chuy\u1ec7n h\u1ecdc sinh c\u00f3 \u0111i\u1ec3m s\u1ed1 cao nh\u1ea5t trong tr\u01b0\u1eddng ch\u01b0a ch\u1eafc l\u00e0 h\u1ecdc sinh th\u00f4ng minh nh\u1ea5t, v\u00e0 c\u00e0ng kh\u00f4ng ch\u1eafc l\u00e0 sau khi ra \u0111\u1eddi anh ta c\u00f3 cu\u1ed9c s\u1ed1ng \u1ed5n th\u1ecfa, h\u1ea1nh ph\u00fac. V\u1eady cu\u1ed9c s\u1ed1ng h\u1ea1nh ph\u00fac quan tr\u1ecdng h\u01a1n hay \u0111i\u1ec3m s\u1ed1 \u1edf tr\u01b0\u1eddng quan tr\u1ecdng h\u01a1n? C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u1ee7a b\u1ea1n!<\/p>\n\n\n<p>&#8212;<\/p>\n\n\n<p>T\u1ea1i sao c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 trang l\u1ea1i tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1? B\u1edfi v\u00ec n\u00f3 \u0111ang t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 m\u1ee9c, xem m\u1ecdi trang l\u00e0 nh\u01b0 nhau, do v\u1eady m\u00e0 n\u00f3 kh\u00f4ng ph\u00e1t hi\u1ec7n ra \u0111\u01b0\u1ee3c c\u00e1c nhu c\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng website. Khuy\u1ebfn ngh\u1ecb c\u1ee7a c\u00f4ng c\u1ee5 ch\u1ec9 \u0111\u00fang \u1edf &#8220;m\u1ee9c trung b\u00ecnh&#8221; m\u00e0 th\u00f4i.<\/p>\n\n\n<p>OK, gi\u1edd l\u00e0 l\u00fac ch\u00fang ta b\u1eaft \u0111\u1ea7u v\u00e0o b\u00e0i n\u00e0o.<\/p>\n\n\n<p>&#8212;<\/p>\n\n\n<p><strong>Ng\u1eebng b\u1ecb d\u1eaft m\u0169i b\u1edfi c\u00e1c b\u00e0i ki\u1ec3m tra v\u00e0 \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 trang ngu ng\u1ed1c (n\u1ebfu b\u1ea1n kh\u00f4ng bi\u1ebft b\u1ea1n \u0111ang l\u00e0m c\u00e1i g\u00ec)!!!<\/strong><\/p>\n\n\n<p>T\u00f4i vi\u1ebft b\u00e0i h\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u1ec3 tr\u00e1nh vi\u1ec7c b\u1ea3n th\u00e2n ph\u1ea3i nh\u1eafc \u0111i nh\u1eafc l\u1ea1i c\u00f9ng m\u1ed9t c\u00e2u chuy\u1ec7n v\u1edbi c\u00e1c kh\u00e1ch h\u00e0ng ng\u00e2y th\u01a1 (naive clients). Hy v\u1ecdng r\u1eb1ng n\u00f3 c\u0169ng s\u1ebd gi\u00fap c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean\/qu\u1ea3n tr\u1ecb website kh\u00f4ng ph\u1ea3i tranh c\u00e3i v\u1edbi kh\u00e1ch h\u00e0ng m\u1edbi v\u1ec1 v\u1ea5n \u0111\u1ec1 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 n\u1eefa. (\u0110i\u1ec1u n\u00e0y c\u0169ng gi\u1ed1ng nh\u1eefng ng\u01b0\u1eddi tranh c\u00e3i v\u1edbi b\u00e1c s\u0129 v\u00ec m\u1ed9t s\u1ed1 th\u00f4ng tin y t\u1ebf h\u1ecd \u0111\u1ecdc \u0111\u01b0\u1ee3c tr\u00ean m\u1ea1ng).<\/p>\n\n\n<p>\u1ede \u0111\u00e2y t\u00f4i s\u1ebd gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng v\u00ec sao b\u1ea1n ph\u1ea3i ng\u1eebng hoang t\u01b0\u1edfng v\u1ec1 \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 trang (page scores). V\u00e0 ng\u1eebng tranh c\u00e3i v\u1edbi l\u1eadp tr\u00ecnh vi\u00ean v\u00e0 ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb h\u1ec7 th\u1ed1ng (sys-admins), nh\u1eefng ng\u01b0\u1eddi hi\u1ec3u bi\u1ebft h\u01a1n b\u1ea1n v\u1ec1 l\u0129nh v\u1ef1c n\u00e0y!<\/p>\n\n\n<p>L\u01b0u \u00fd:<\/p>\n\n\n<ul><li>B\u1ea1n c\u00f3 th\u1ec3 theo d\u00f5i th\u1ea3o lu\u1eadn v\u1ec1 v\u1ea5n \u0111\u1ec1 v\u1eeba n\u00f3i tr\u00ean b\u00e0i \u0111\u0103ng \u1edf nh\u00f3m facebook <a href=\"https:\/\/www.facebook.com\/groups\/wordpressspeedup\/1050397978483182\/\" target=\"_blank\" rel=\"noreferrer noopener\">WP Speed Up<\/a>.<\/li><li>C\u1eadp nh\u1eadt ng\u00e0y 20, th\u00e1ng 4, 2020: <a href=\"https:\/\/gtmetrix.com\/blog\/recommendation-updates-http-2-changes-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\">GTmetrix \u0111\u00e3 ch\u1ec9nh s\u1eeda thu\u1eadt to\u00e1n c\u1ee7a h\u1ecd<\/a> \u0111\u1ec3 ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u01a1n c\u00f4ng ngh\u1ec7 t\u1ea3i trang hi\u1ec7n h\u00e0nh!<\/li><\/ul>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"592\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/diem-so-trang-khong-thanh-van-de.jpg\" alt=\"\u0110i\u1ec3m s\u1ed1 trang (page scores) kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1!\" class=\"wp-image-14032\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/diem-so-trang-khong-thanh-van-de.jpg 800w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/diem-so-trang-khong-thanh-van-de-300x222.jpg 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/diem-so-trang-khong-thanh-van-de-768x568.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>C\u00e1c \u0111i\u1ec3m s\u1ed1 trang (page scores) n\u00e0y kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1!<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"576\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/page-timings-matter.jpg\" alt=\"C\u00e1c m\u1ed1c th\u1eddi gian l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t! (TTFB &amp; Paint times)\" class=\"wp-image-14033\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/page-timings-matter.jpg 800w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/page-timings-matter-300x216.jpg 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/page-timings-matter-768x553.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>C\u00e1c m\u1ed1c th\u1eddi gian l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t! (TTFB &amp; Paint times)<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"493\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/critical-waterfall.jpg\" alt=\"C\u00e1c ph\u1ea7n t\u1eed quan tr\u1ecdng n\u1eb1m \u1edf ph\u1ea7n \u0111\u1ea7u Waterfall\" class=\"wp-image-14034\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/critical-waterfall.jpg 800w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/critical-waterfall-300x185.jpg 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/critical-waterfall-768x473.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>C\u00e1c ph\u1ea7n t\u1eed quan tr\u1ecdng n\u1eb1m \u1edf ph\u1ea7n \u0111\u1ea7u Waterfall<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"502\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/end-waterfall.jpg\" alt=\"C\u00e1c ph\u1ea7n t\u1eed c\u1ee7a b\u00ean th\u1ee9 ba n\u1eb1m cu\u1ed1i waterfall kh\u00f4ng quan tr\u1ecdng!\" class=\"wp-image-14035\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/end-waterfall.jpg 800w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/end-waterfall-300x188.jpg 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/06\/end-waterfall-768x482.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>C\u00e1c ph\u1ea7n t\u1eed c\u1ee7a b\u00ean th\u1ee9 ba n\u1eb1m cu\u1ed1i waterfall kh\u00f4ng quan tr\u1ecdng!<\/figcaption><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d664bda76\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d664bda76\"  type=\"checkbox\" id=\"item-6577d664bda76\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#1_Ban_khong_biet_cach_doc_bai_kiem_tra_toc_do\" title=\"1. B\u1ea1n kh\u00f4ng bi\u1ebft c\u00e1ch \u0111\u1ecdc b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9.\">1. B\u1ea1n kh\u00f4ng bi\u1ebft c\u00e1ch \u0111\u1ecdc b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#2_Cac_bai_kiem_tra_toc_do_khuyen_khich_TOI_UU_HOA_DIEM_SO_TOC_DO_thay_vi_toi_uu_cho_NGUOI_DUNG\" title=\"2. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 khuy\u1ebfn kh\u00edch T\u1ed0I \u01afU H\u00d3A \u0110I\u1ec2M S\u1ed0 T\u1ed0C \u0110\u1ed8 thay v\u00ec t\u1ed1i \u01b0u cho NG\u01af\u1edcI D\u00d9NG.\">2. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 khuy\u1ebfn kh\u00edch T\u1ed0I \u01afU H\u00d3A \u0110I\u1ec2M S\u1ed0 T\u1ed0C \u0110\u1ed8 thay v\u00ec t\u1ed1i \u01b0u cho NG\u01af\u1edcI D\u00d9NG.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#3_Cac_bai_kiem_tra_toc_do_khong_tinh_den_cac_NHU_CAU_rieng_biet_cua_tung_website\" title=\"3. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng t\u00ednh \u0111\u1ebfn c\u00e1c NHU C\u1ea6U ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng website.\">3. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng t\u00ednh \u0111\u1ebfn c\u00e1c NHU C\u1ea6U ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng website.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#4_Cac_bai_kiem_tra_toc_do_khong_noi_cho_ban_biet_dieu_gi_anh_huong_lon_nhat_den_toc_do\" title=\"4. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng n\u00f3i cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn t\u1ed1c \u0111\u1ed9.\">4. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng n\u00f3i cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn t\u1ed1c \u0111\u1ed9.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#5_Cac_bai_kiem_tra_toc_do_khong_hoan_chinh\" title=\"5. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng ho\u00e0n ch\u1ec9nh.\">5. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng ho\u00e0n ch\u1ec9nh.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#6_Hau_het_cac_bai_kiem_tra_toc_do_khong_so_sanh_duoc_voi_bai_KIEM_TRA_BANG_MAT_TRAN\" title=\"6. H\u1ea7u h\u1ebft c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng so s\u00e1nh \u0111\u01b0\u1ee3c v\u1edbi b\u00e0i KI\u1ec2M TRA B\u1eb0NG M\u1eaeT TR\u1ea6N\">6. H\u1ea7u h\u1ebft c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng so s\u00e1nh \u0111\u01b0\u1ee3c v\u1edbi b\u00e0i KI\u1ec2M TRA B\u1eb0NG M\u1eaeT TR\u1ea6N<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/#7_Giai_quyet_va_phan_bac_cac_loi_don_pho_bien\" title=\"7. Gi\u1ea3i quy\u1ebft v\u00e0 ph\u1ea3n b\u00e1c c\u00e1c l\u1eddi \u0111\u1ed3n ph\u1ed5 bi\u1ebfn.\">7. Gi\u1ea3i quy\u1ebft v\u00e0 ph\u1ea3n b\u00e1c c\u00e1c l\u1eddi \u0111\u1ed3n ph\u1ed5 bi\u1ebfn.<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Ban_khong_biet_cach_doc_bai_kiem_tra_toc_do\"><\/span>1. B\u1ea1n kh\u00f4ng bi\u1ebft c\u00e1ch \u0111\u1ecdc b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>T\u00f4i d\u00e1m c\u01b0\u1ee3c r\u1eb1ng h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u s\u1ee3 h\u00e3i c\u00e1c ch\u1ec9 s\u1ed1 t\u1ed1c \u0111\u1ed9, ngay c\u1ea3 c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean web chuy\u00ean nghi\u1ec7p c\u0169ng v\u1eady. Ch\u1eb3ng ph\u1ea3i ng\u1eabu nhi\u00ean m\u00e0 c\u00e1c d\u1ee5ng c\u1ee5 \u0111\u1eaft ti\u1ec1n trong b\u1ec7nh vi\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c c\u00e1c b\u00e1c s\u0129 \u0111\u00e3 qua \u0111\u00e0o t\u1ea1o, ch\u1ee9ng nh\u1eadn s\u1eed d\u1ee5ng. \u0110\u1ea5y l\u00e0 v\u00ec h\u1ecd bi\u1ebft h\u1ecd \u0111ang l\u00e0m c\u00e1i g\u00ec. H\u1ecd bi\u1ebft r\u1eb1ng nh\u1eefng ch\u1ec9 s\u1ed1 n\u00e0o c\u1ea7n ch\u00fa \u00fd v\u00e0 nh\u1eefng c\u00e1i n\u00e0o c\u1ea7n b\u1ecf qua. <\/p>\n\n\n<p>T\u1ea1i sao ch\u00fang ta kh\u00f4ng \u0111\u1ec3 m\u1ed9t ng\u01b0\u1eddi ng\u1eabu nhi\u00ean n\u00e0o \u0111\u00f3 nh\u00ecn v\u00e0o c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y? B\u1edfi v\u00ec m\u1ed9t ng\u01b0\u1eddi ng\u1eabu nhi\u00ean kh\u00f4ng bi\u1ebft g\u00ec h\u1ebft v\u1ec1 c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng, n\u00f3 \u0111o l\u01b0\u1eddng c\u00e1i g\u00ec, v\u00e0 li\u1ec7u r\u1eb1ng t\u1eebng k\u1ebft qu\u1ea3 l\u00e0 x\u1ea5u hay l\u00e0 t\u1ed1t. H\u1ecd \u0111\u01a1n gi\u1ea3n b\u1ecb s\u1ee3 h\u00e3i v\u00e0 ph\u1ea3n \u1ee9ng th\u00e1i qu\u00e1 (over-react) v\u1edbi m\u1ecdi h\u00ecnh \u1ea3nh\/\u00e2m thanh m\u00e0 c\u00f4ng c\u1ee5 \u0111\u01b0a ra!<\/p>\n\n\n<p>C\u00e1c c\u00e2u h\u1ecfi \u0111\u01a1n gi\u1ea3n gi\u00fap b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c b\u1ea3n th\u00e2n c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 hay kh\u00f4ng:<\/p>\n\n\n<ul><li>B\u1ea1n c\u00f3 bi\u1ebft <a href=\"https:\/\/kiencang.net\/ttfb-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">TTFB l\u00e0 g\u00ec<\/a> kh\u00f4ng?<\/li><li>B\u1ea1n c\u00f3 bi\u1ebft <a href=\"https:\/\/kiencang.net\/first-contentful-paint-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">First Paint l\u00e0 g\u00ec<\/a> kh\u00f4ng?<\/li><li>B\u1ea1n c\u00f3 bi\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0o l\u00e0 quan tr\u1ecdng nh\u1ea5t tr\u00ean <a href=\"https:\/\/kiencang.net\/waterfall-toc-do-website\/\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1ea3ng waterfall<\/a> kh\u00f4ng?<\/li><li>L\u00e0m sao b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/cdn-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN<\/a> \u0111ang l\u00e0 y\u1ebfu t\u1ed1 tr\u1ee3 gi\u00fap hay g\u00e2y t\u1ed5n th\u01b0\u01a1ng cho c\u00e1c t\u00e0i nguy\u00ean t\u1ea3i tr\u00ean trang c\u1ee7a b\u1ea1n?<\/li><li>HTTP\/2 l\u00e0 g\u00ec, b\u1ea1n c\u00f3 bi\u1ebft l\u1ee3i \u00edch c\u1ee7a n\u00f3 l\u00e0 g\u00ec kh\u00f4ng?<\/li><li>L\u00e0m sao b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-anh-tren-web\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c \u1ea3nh tr\u00ean trang \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a, n\u00e9n v\u1eeba \u0111\u1ee7<\/a>?<\/li><li>T\u1ea1i sao b\u1ea1n n\u00ean b\u1ecf qua c\u00e1c y\u00eau c\u1ea7u t\u1eeb b\u00ean th\u1ee9 ba?<\/li><li>M\u00e1y ch\u1ee7 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 n\u00ean c\u00e1ch m\u00e1y ch\u1ee7 web c\u1ee7a b\u1ea1n bao xa?<\/li><\/ul>\n\n\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng hi\u1ec3u b\u1ea5t c\u1ee9 m\u1ee5c n\u00e0o trong danh s\u00e1ch k\u1ec3 tr\u00ean, b\u1ea1n ho\u00e0n to\u00e0n KH\u00d4NG \u0111\u1ee7 kh\u1ea3 n\u0103ng \u0111\u1ec3 \u0111\u1ecdc k\u1ebft qu\u1ea3 b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 \u0111\u00e2u&#8230;v\u00e0 ch\u1eafc ch\u1eafn l\u00e0 kh\u00f4ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 tranh c\u00e3i v\u1edbi l\u1eadp tr\u00ecnh vi\u00ean ho\u1eb7c \u0111\u1ed1i t\u00e1c t\u01b0 v\u1ea5n th\u1ef1c hi\u1ec7n t\u1ed1i \u01b0u h\u00f3a v\u1ec1 nh\u1eefng g\u00ec ph\u1ea3i \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Cac_bai_kiem_tra_toc_do_khuyen_khich_TOI_UU_HOA_DIEM_SO_TOC_DO_thay_vi_toi_uu_cho_NGUOI_DUNG\"><\/span>2. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 khuy\u1ebfn kh\u00edch T\u1ed0I \u01afU H\u00d3A \u0110I\u1ec2M S\u1ed0 T\u1ed0C \u0110\u1ed8 thay v\u00ec t\u1ed1i \u01b0u cho NG\u01af\u1edcI D\u00d9NG.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p><strong>B\u1eaby h\u00e0ng \u0111\u1ea7u c\u1ee7a c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9.<\/strong><\/p>\n\n\n<p>\u0110i\u1ec1u n\u00e0y cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn chuy\u1ec7n b\u1ea1n t\u1ed1i \u01b0u h\u00f3a website c\u1ee7a b\u1ea1n cho c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 thay v\u00ec cho ng\u01b0\u1eddi d\u00f9ng th\u1ef1c (actual users). \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn m\u1edbi kinh kh\u1ee7ng l\u00e0m sao! N\u00f3 c\u0169ng gi\u1ed1ng nh\u01b0 b\u1ea1n vi\u1ebft n\u1ed9i dung \u0111\u1ec3 SEO ch\u1ee9 kh\u00f4ng ph\u1ea3i vi\u1ebft cho ng\u01b0\u1eddi \u0111\u1ecdc. B\u1ea1n t\u01b0\u1edfng t\u01b0\u1ee3ng r\u1eb1ng ch\u00fang c\u00f3 logic h\u00e0i h\u00f2a n\u00e0o \u0111\u1ea5y \u0111\u1ec3 an \u1ee7i c\u1ea3 hai, nh\u01b0ng \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u di\u1ec5n ra trong th\u1ef1c t\u1ebf. C\u00e1i \u0111\u01b0\u1ee3c coi l\u00e0 &#8220;nhanh v\u00e0 h\u1eefu \u00edch&#8221; cho b\u1ecd ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 c\u00f3 th\u1ec3 kh\u00f4ng &#8220;nhanh v\u00e0 h\u1eefu \u00edch&#8221; cho kh\u00e1ch truy c\u1eadp th\u1ef1c t\u1ebf.<\/p>\n\n\n<p>\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn m\u1ed9t s\u1ef1 th\u1eadt \u0111\u01a1n gi\u1ea3n r\u1eb1ng t\u1ed1i \u01b0u h\u00f3a cho ng\u01b0\u1eddi d\u00f9ng ngh\u0129a l\u00e0 ph\u00e2n ph\u1ed1i TR\u1ea2I NGHI\u1ec6M NG\u01af\u1edcI D\u00d9NG M\u00c0 H\u1ecc MONG \u0110\u1ee2I (intended user experience) trong kho\u1ea3ng th\u1eddi gian nhanh nh\u1ea5t c\u00f3 th\u1ec3. Trong khi t\u1ed1i \u01b0u h\u00f3a cho b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 c\u00f3 ngh\u0129a l\u00e0 ph\u00e2n ph\u1ed1i M\u1ed8T V\u00c0I T\u00c0I NGUY\u00caN NHANH NH\u1ea4T C\u00d3 TH\u1ec2. \u0110\u00e2y l\u00e0 l\u00fd do gi\u1ea3i th\u00edch t\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i tr\u1edf n\u00ean kh\u00f3 kh\u0103n. <\/p>\n\n\n<p>T\u1ea1o m\u1ed9t tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng c\u1ee5 th\u1ec3 y\u00eau c\u1ea7u t\u1ea3i nhi\u1ec1u t\u00e0i nguy\u00ean c\u1ee5 th\u1ec3 v\u00e0 theo m\u1ed9t th\u1ee9 t\u1ef1 t\u1ea3i c\u1ee5 th\u1ec3. Nh\u01b0ng c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng kh\u00f4ng bi\u1ebft \u0111i\u1ec1u n\u00e0y, v\u00ec th\u1ebf ch\u00fang ch\u1ec9 \u0111\u01a1n gi\u1ea3n khuy\u00ean b\u1ea1n lo\u1ea1i b\u1ecf c\u00e0ng nhi\u1ec1u byte v\u00e0 c\u00e0ng nhi\u1ec1u y\u00eau c\u1ea7u c\u00e0ng t\u1ed1t. Ch\u00fang kh\u00f4ng bi\u1ebft (ho\u1eb7c c\u00f3 th\u1ec3 kh\u00f4ng t\u00ednh \u0111\u1ebfn) \u0111i\u1ec1u m\u00e0 b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n, ho\u1eb7c \u0111i\u1ec1u tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n<p>\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c chuy\u00ean vi\u00ean t\u01b0 v\u1ea5n t\u1ed1c \u0111\u1ed9 nh\u1eafc \u0111i nh\u1eafc l\u1ea1i r\u1eb1ng b\u1ea1n ph\u1ea3i T\u1ed0I \u01afU CHO NG\u01af\u1edcI D\u00d9NG, ch\u1ee9 kh\u00f4ng ph\u1ea3i cho \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9!<\/p>\n\n\n<p><strong>M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 bi\u1ebft li\u1ec7u r\u1eb1ng b\u1ea1n c\u00f3 \u0111\u00e1nh gi\u00e1 \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 qu\u00e1 cao hay kh\u00f4ng:<\/strong><\/p>\n\n\n<ul><li>B\u1ea1n th\u00edch c\u00e1i g\u00ec h\u01a1n? Trang web t\u1ea3i nhanh v\u00e0 \u0111i\u1ec3m s\u1ed1 t\u1ec7 HAY l\u00e0 b\u1ea1n th\u00edch m\u1ed9t trang t\u1ea3i ch\u1eadm nh\u01b0ng l\u1ea1i c\u00f3 \u0111i\u1ec3m s\u1ed1 cao?<\/li><li>N\u1ebfu \u0111\u1ed1i th\u1ee7 c\u00f3 website t\u1ea3i ch\u1eadm h\u01a1n c\u1ee7a b\u1ea1n, nh\u01b0ng l\u1ea1i c\u00f3 \u0111i\u1ec3m s\u1ed1 cao h\u01a1n, \u0111i\u1ec1u n\u00e0y c\u00f3 l\u00e0m b\u1ea1n c\u1ea3m th\u1ea5y kh\u00f3 ch\u1ecbu kh\u00f4ng?<\/li><li>B\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 ngh\u0129 r\u1eb1ng \u0111i\u1ec1u quan tr\u1ecdng ph\u1ea3i l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m s\u1ed1 100\/100 hay A+?<\/li><li>B\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 ngh\u0129 r\u1eb1ng c\u00f3 \u0111\u01b0\u1ee3c \u0111i\u1ec3m s\u1ed1 cao \u0111\u1ed3ng ngh\u0129a v\u1edbi trang c\u1ee7a b\u1ea1n t\u1ea3i nhanh?<\/li><\/ul>\n\n\n<p>Tin hay kh\u00f4ng th\u00ec t\u00f9y, nh\u01b0ng c\u00f3 m\u1ed1i t\u01b0\u01a1ng quan r\u1ea5t nh\u1ecf gi\u1eefa \u0111i\u1ec3m s\u1ed1 cao v\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ea3i trang th\u1ef1c t\u1ebf. B\u1ea1n c\u1ee9 th\u1eed t\u1ef1 ki\u1ec3m tra r\u1ea5t nhi\u1ec1u trang web n\u1ed5i ti\u1ebfng l\u00e0 bi\u1ebft ngay th\u00f4i m\u00e0.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Cac_bai_kiem_tra_toc_do_khong_tinh_den_cac_NHU_CAU_rieng_biet_cua_tung_website\"><\/span>3. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng t\u00ednh \u0111\u1ebfn c\u00e1c <em>NHU C\u1ea6U<\/em> ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng website.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p><strong>M\u1ed7i website \u0111\u1ec1u \u0111\u1ed9c \u0111\u00e1o v\u00e0 kh\u00e1c bi\u1ec7t.<\/strong><\/p>\n\n\n<p>Gi\u1ea3 d\u1ee5 m\u1ed9t chi\u1ebfc xe \u00f4 t\u00f4 r\u1eddi nh\u00e0 v\u00e0 mang theo 20kg thi\u1ebft b\u1ecb, r\u1ed3i m\u1ed9t chi\u1ebfc xe \u00f4 t\u00f4 kh\u00e1c c\u0169ng r\u1eddi nh\u00e0 mang theo 200kg thi\u1ebft b\u1ecb. Chi\u1ebfc xe th\u1ee9 hai c\u00f3 mang qu\u00e1 nhi\u1ec1u \u0111\u1ed3 \u0111\u1ea1c hay kh\u00f4ng? Ch\u00fang ta kh\u00f4ng bi\u1ebft \u0111\u01b0\u1ee3c! C\u00f3 th\u1ec3 chi\u1ebfc xe \u0111\u1ea7u ti\u00ean ch\u1ec9 mang \u0111\u1ed3 tr\u1ea3 cho ng\u01b0\u1eddi h\u00e0ng x\u00f3m g\u1ea7n \u0111\u00f3 c\u00f2n chi\u1ebfc xe th\u1ee9 hai mang \u0111\u1ed3 \u0111i c\u1eafm tr\u1ea1i cho hai ng\u00e0y ngh\u1ec9 cu\u1ed1i tu\u1ea7n th\u00ec sao? B\u1ea1n c\u00f3 hi\u1ec3u \u00fd t\u00f4i kh\u00f4ng?<\/p>\n\n\n<p>N\u1ebfu b\u00e0i ki\u1ec3m tra n\u00f3i r\u1eb1ng \u1ea3nh tr\u00ean trang c\u1ee7a b\u1ea1n qu\u00e1 n\u1eb7ng so v\u1edbi c\u00e1c trang kh\u00e1c? \u0110i\u1ec1u \u0111\u00f3 l\u00e0 t\u1ed1t hay x\u1ea5u? \u00c0 v\u00e2ng, n\u00f3 c\u00f2n t\u00f9y! N\u1ebfu trang c\u1ee7a b\u1ea1n l\u00e0 trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ho\u1eb7c trang v\u1ec1 nhi\u1ebfp \u1ea3nh, b\u1ea1n mu\u1ed1n c\u00e1c \u1ea3nh l\u1edbn h\u01a1n v\u00e0 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n! N\u1ebfu trang c\u1ee7a b\u1ea1n l\u00e0 blog \u0111\u01a1n gi\u1ea3n ch\u1ee7 y\u1ebfu l\u00e0 v\u0103n b\u1ea3n, th\u00ec c\u00f3 l\u1ebd b\u1ea1n mu\u1ed1n c\u00e1c \u1ea3nh nh\u1ecf h\u01a1n.<\/p>\n\n\n<p>B\u1ea1n kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u1ec3 m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng ng\u1edb ng\u1ea9n \u0111\u00e1nh gi\u00e1 nh\u1eefng th\u1ee9 n\u00e0y khi n\u00f3 kh\u00f4ng c\u00f3 b\u1ea5t c\u1ee9 quan \u0111i\u1ec3m n\u00e0o \u0111\u01b0\u1ee3c xem x\u00e9t c\u1ea9n th\u1eadn r\u1eb1ng trang c\u1ee7a b\u1ea1n \u0111ang l\u00e0m g\u00ec v\u00e0 n\u00f3 kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c trang web kh\u00e1c ra sao. N\u00f3 \u0111\u00e1nh gi\u00e1 t\u1ea5t c\u1ea3 c\u00e1c trang web theo m\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n (t\u00f9y \u00fd) m\u00e0 kh\u00f4ng t\u00ednh \u0111\u1ebfn nhu c\u1ea7u \u0111\u1eb7c bi\u1ec7t c\u1ee7a t\u1eebng c\u00e1i. \u00dd t\u01b0\u1edfng \u1edf \u0111\u00e2y l\u00e0 \u0111i\u1ec1u c\u00f3 th\u1ec3 &#8220;t\u1ec7&#8221; v\u1edbi trang n\u00e0y l\u1ea1i c\u00f3 th\u1ec3 th\u1ef1c s\u1ef1 &#8220;t\u1ed1t&#8221; v\u1edbi trang kh\u00e1c ho\u1eb7c l\u00e0 &#8220;ch\u1ee7 \u00fd&#8221; c\u1ee7a h\u1ecd.<\/p>\n\n\n<p><strong>V\u00ed d\u1ee5 v\u1ec1 c\u00e1c \u0111\u1ec1 xu\u1ea5t t\u1ed1c \u0111\u1ed9 ph\u1ed5 bi\u1ebfn (v\u00e0 l\u00fd do v\u00ec sao ch\u00fang l\u1ea1i thi\u1ebfu s\u00f3t):<\/strong><\/p>\n\n\n<ul><li><em><a href=\"https:\/\/kiencang.net\/plugin-autoptimize\/\" target=\"_blank\" rel=\"noreferrer noopener\">K\u1ebft h\u1ee3p CSS\/JS<\/a> \u0111\u1ec3 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u00e1c y\u00eau c\u1ea7u<\/em> &#8211; \u0110i\u1ec1u n\u00e0y th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 l\u00e0m trang c\u1ee7a b\u1ea1n t\u1ea3i ch\u1eadm h\u01a1n ho\u1eb7c\/v\u00e0 ph\u00e1 v\u1ee1 thi\u1ebft k\u1ebf\/ch\u1ee9c n\u0103ng c\u1ee7a website!<\/li><li><em><a href=\"https:\/\/kiencang.net\/plugin-nen-anh-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">N\u00e9n \u1ea3nh<\/a> \u0111\u1ec3 ti\u1ebft ki\u1ec7m nhi\u1ec1u dung l\u01b0\u1ee3ng h\u01a1n<\/em> &#8211; N\u00f3 l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh c\u1ee7a b\u1ea1n v\u00e0 kh\u00f4ng n\u00ean \u00e1p d\u1ee5ng cho c\u00e1c trang c\u1ea7n \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng cao!<\/li><li><em><a href=\"https:\/\/kiencang.net\/lazy-load-anh-va-video\/\" target=\"_blank\" rel=\"noreferrer noopener\">Lazy load \u1ea3nh<\/a> gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang<\/em> &#8211; c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho UX (giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng) c\u1ee7a trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, v\u00ec n\u00f3 l\u00e0m c\u1ea3n tr\u1edf kh\u1ea3 n\u0103ng cu\u1ed9n chu\u1ed9t nhanh c\u1ee7a ng\u01b0\u1eddi xem! V\u00e0 t\u00f4i c\u1ea7n ph\u1ea3i n\u00f3i r\u1eb1ng TR\u00cc HO\u00c3N T\u1ea2I th\u00ec <em>ch\u1eadm h\u01a1n<\/em> so v\u1edbi T\u1ea2I TH\u00d4NG TH\u01af\u1edcNG!<\/li><li><em>T\u1ed5ng th\u1eddi gian t\u1ea3i ch\u1eadm<\/em> &#8211; \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ea5n \u0111\u1ec1 v\u00ec ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n m\u1ecdi th\u1ee9 ph\u1ea3i t\u1ea3i ngay l\u1eadp t\u1ee9c, h\u1ecd ch\u1ec9 c\u1ea7n c\u00e1c t\u00e0i nguy\u00ean quan tr\u1ecdng ho\u1eb7c t\u00e0i nguy\u00ean \u1edf g\u1ea7n ph\u1ea7n \u0111\u1ea7u c\u1ee7a trang.<\/li><\/ul>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Cac_bai_kiem_tra_toc_do_khong_noi_cho_ban_biet_dieu_gi_anh_huong_lon_nhat_den_toc_do\"><\/span>4. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng n\u00f3i cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn t\u1ed1c \u0111\u1ed9.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p><strong>C\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 th\u01b0\u1eddng g\u00e1n cho m\u1ed9t v\u1ea5n \u0111\u1ec1 l\u1edbn n\u00e0o \u0111\u00f3 kh\u00f4ng th\u1ef1c s\u1ef1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9.<\/strong><\/p>\n\n\n<p>H\u1ecd \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u01b0a cho b\u1ea1n m\u1ed9t danh s\u00e1ch r\u1ea5t d\u00e0i (v\u00e0 d\u01b0\u1eddng nh\u01b0) \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 nh\u1eefng th\u1ee9 PH\u1ea2I L\u00c0M (to-do). Nh\u01b0ng h\u1ecd kh\u00f4ng n\u00f3i cho b\u1ea1n bi\u1ebft t\u1ea1i sao ch\u00fang l\u1ea1i quan tr\u1ecdng. Nhi\u1ec1u th\u1ee9 v\u1eabn \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c m\u00e0 kh\u00f4ng th\u1ef1c s\u1ef1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 c\u1ee7a b\u1ea1n. Ch\u00fang ch\u1ec9 l\u00e0 c\u00e1c t\u1ed1i \u01b0u h\u00f3a ng\u1eabu nhi\u00ean m\u00e0 c\u00f3 th\u1ec3 (ho\u1eb7c kh\u00f4ng th\u1ec3) c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng&#8230;\u1ed1i tr\u1eddi, th\u1eadt l\u00e0 b\u1ed1i r\u1ed1i!<\/p>\n\n\n<p><strong>T\u1ea1i sao c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng n\u00f3i cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec l\u00e0 quan tr\u1ecdng nh\u1ea5t?<\/strong><\/p>\n\n\n<p>Nguy\u00ean nh\u00e2n l\u00e0 v\u00ec ch\u00fang l\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng h\u00f3a ho\u00e0n to\u00e0n v\u00e0 kh\u00f4ng th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u1ecdi th\u1ee9 nh\u01b0 c\u00e1ch con ng\u01b0\u1eddi c\u00f3 th\u1ec3 l\u00e0m (\u00edt nh\u1ea5t l\u00e0 t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y-2020). Ch\u00fang kh\u00f4ng g\u00e1n tr\u1ecdng s\u1ed1 cho c\u00e1c ch\u1ec9 s\u1ed1 t\u00f9y thu\u1ed9c v\u00e0o t\u1eebng website. Ch\u00fang kh\u00f4ng hi\u1ec3u r\u1eb1ng vi\u1ec7c <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-anh-tren-web\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i \u01b0u h\u00f3a li\u00ean quan \u0111\u1ebfn h\u00ecnh \u1ea3nh<\/a> ph\u1ea3i \u0111\u01b0\u1ee3c xem tr\u1ecdng h\u01a1n tr\u00ean c\u00e1c trang c\u00f3 nhi\u1ec1u \u1ea3nh. V\u00e0 <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-phan-phoi-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i \u01b0u h\u00f3a CSS<\/a> ph\u1ea3i \u0111\u01b0\u1ee3c xem tr\u1ecdng h\u01a1n tr\u00ean c\u00e1c trang n\u1eb7ng CSS. Ch\u00fang kh\u00f4ng t\u00ednh \u0111\u1ebfn \u0111i\u1ec1u \u0111\u00f3, v\u00ec th\u1ebf ch\u00fang g\u00e1n tr\u1ecdng s\u1ed1 cho c\u00e1c ch\u1ec9 s\u1ed1 l\u00e0 nh\u01b0 nhau tr\u00ean m\u1ecdi website.<\/p>\n\n\n<ul><li>CSS b\u1ecb d\u01b0 th\u1eeba 500KB vs \u1ea3nh b\u1ecb d\u01b0 th\u1eeba 5KB v\u1eabn b\u1ecb tr\u1eeb c\u00f9ng \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9.<\/li><li>10 \u1ea3nh d\u01b0 1KB dung l\u01b0\u1ee3ng m\u1ed7i c\u00e1i s\u1ebd l\u00e0m \u0111i\u1ec3m s\u1ed1 c\u1ee7a b\u1ea1n th\u1ea5p h\u01a1n so v\u1edbi CSS c\u00f3 30KB v\u00f4 \u00edch.<\/li><\/ul>\n\n\n<p>B\u1ea1n hi\u1ec3u \u00fd t\u00f4i ch\u1ee9? C\u00e1c b\u00e0i ki\u1ec3m tra b\u1ecb thi\u1ebfu s\u00f3t! T\u00f4i kh\u00f4ng th\u1ec3 tr\u00ecnh b\u00e0y, gi\u1ea3i th\u00edch m\u1ecdi k\u1ecbch b\u1ea3n c\u00f3 th\u1ec3 c\u00f3, nh\u01b0ng khi c\u00e1c b\u00e0i ki\u1ec3m tra \u0111i theo h\u01b0\u1edbng \u0111\u00f3, t\u00f4i s\u1ebd kh\u00f4ng nghe theo. T\u00f4i hy v\u1ecdng b\u1ea1n s\u1ebd ti\u1ebft ki\u1ec7m th\u1eddi gian cho c\u1ea3 hai (v\u00e0 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 tin t\u01b0\u1edfng t\u00f4i).<\/p>\n\n\n<p><strong>C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng t\u00ednh \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p khi c\u00e1c quy t\u1eafc (chung) n\u00ean \u0111\u01b0\u1ee3c ph\u00e1 v\u1ee1<\/strong><\/p>\n\n\n<p>L\u1ea5y v\u00ed d\u1ee5, c\u00f3 nh\u1eefng ca th\u00e1n ng\u1edb ng\u1ea9n v\u1ec1 c\u00e1c t\u00e0i nguy\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" target=\"_blank\" rel=\"noreferrer noopener\">cache ph\u00eda tr\u00ecnh duy\u1ec7t<\/a> ho\u1eb7c c\u00f3 th\u1eddi gian h\u1ebft h\u1ea1n cache qu\u00e1 ng\u1eafn. V\u00c2NG! M\u1ed9t s\u1ed1 t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c H\u1ed6 TR\u1ee2 \u0111\u1ec3 n\u00f3 nh\u01b0 th\u1ebf. M\u1ed9t s\u1ed1 t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c H\u1ed6 TR\u1ee2 \u0111\u1ec3 n\u00f3 kh\u00f4ng th\u1ec3 cache ho\u1eb7c c\u00f3 th\u1eddi gian cache ng\u1eafn \u0111\u1ec3 gi\u1eef n\u1ed9i dung \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt li\u00ean t\u1ee5c.<\/p>\n\n\n<p><a href=\"https:\/\/kiencang.net\/loai-bo-css-chan-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">CSS ch\u1eb7n hi\u1ec3n th\u1ecb<\/a> &#8211; T\u00f4i gh\u00e9t l\u1eddi than phi\u1ec1n n\u00e0y. CSS C\u1ea6N PH\u1ea2I ch\u1eb7n hi\u1ec3n th\u1ecb (render-blocking). B\u1ea1n c\u00f3 bi\u1ebft chuy\u1ec7n gi x\u1ea3y ra kh\u00f4ng n\u1ebfu b\u1ea1n kh\u00f4ng c\u00f3 CSS ch\u1eb7n-hi\u1ec3n-th\u1ecb&#8230;b\u1ea1n s\u1ebd g\u1eb7p l\u1ed7i FOUT\/FOUC! Tin t\u00f4i \u0111i, ch\u1eb7n hi\u1ec3n th\u1ecb c\u00f3 m\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Cac_bai_kiem_tra_toc_do_khong_hoan_chinh\"><\/span>5. C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng ho\u00e0n ch\u1ec9nh.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>\u0110\u00fang v\u1eady \u0111\u1ea5y \u1ea1, ch\u00fang kh\u00f4ng ho\u00e0n ch\u1ec9nh \u0111\u00e2u, v\u00e0 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng n\u00f3 m\u00e0 ch\u1eb3ng h\u1ec1 bi\u1ebft \u0111i\u1ec1u n\u00e0y! Ch\u00fang l\u00e0m cho nh\u1eefng ai m\u1edbi tham gia v\u00e0o l\u0129nh v\u1ef1c t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 c\u1ea3m th\u1ea5y t\u1ec7 v\u1ec1 nh\u1eefng th\u1ee9 m\u00e0 h\u1ecd kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i \u0111\u01b0\u1ee3c. T\u00f4i s\u1ebd li\u1ec7t k\u00ea m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 b\u00ean d\u01b0\u1edbi:<\/p>\n\n\n<p><strong>Nh\u1eefng l\u1eddi khuy\u00ean l\u1ed7i th\u1eddi<\/strong><\/p>\n\n\n<p>C\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng c\u00f2n c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao cho c\u00f4ng ngh\u1ec7 m\u00e1y ch\u1ee7 web hi\u1ec7n \u0111\u1ea1i ng\u00e0y nay. T\u00f4i v\u1eabn th\u1ea5y ng\u01b0\u1eddi ta \u0111\u01b0a ra c\u00e1c l\u1eddi khuy\u1ebfn ngh\u1ecb t\u0103ng t\u1ed1c web ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng ngh\u1ec7 m\u00e1y ch\u1ee7 web c\u0169, nh\u01b0ng l\u1ea1i l\u00e0m ch\u1eadm \u0111i n\u1ebfu b\u1ea1n \u0111ang d\u00f9ng c\u00e1c c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i. V\u00ed d\u1ee5 nh\u01b0 khuy\u00ean <a href=\"https:\/\/kiencang.net\/bat-nen-gzip\/\" target=\"_blank\" rel=\"noreferrer noopener\">s\u1eed d\u1ee5ng GZIP<\/a> trong khi <a href=\"https:\/\/kiencang.net\/nen-brotli-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Brotli<\/a> \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c d\u00f9ng (Brotli l\u00e0 c\u00f4ng ngh\u1ec7 n\u00e9n hi\u1ec7u qu\u1ea3 h\u01a1n GZIP), ho\u1eb7c l\u1eddi khuy\u00ean v\u1ec1 vi\u1ec7c gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u00e1c y\u00eau c\u1ea7u HTTP trong khi giao th\u1ee9c HTTP\/2 cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u song song (parallel requests)!<\/p>\n\n\n<p><strong>X\u1eed ph\u1ea1t c\u00e1c y\u00eau c\u1ea7u c\u1ee7a b\u00ean th\u1ee9 3<\/strong><\/p>\n\n\n<p>T\u00f4i r\u1ea5t gh\u00e9t chuy\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 n\u00eau v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1eddi gian t\u1ea3i ch\u1eadm, th\u1eddi gian cache ng\u1eafn, ho\u1eb7c m\u00e3 h\u00f3a c\u1ee7a m\u1ed9t s\u1ed1 y\u00eau c\u1ea7u t\u1ea3i \u0111\u1ebfn t\u1eeb b\u00ean ngo\u00e0i (externally-loaded request). \u0110\u00e2y l\u00e0 nh\u1eefng t\u00e0i nguy\u00ean t\u1ea3i t\u1eeb M\u00c1Y CH\u1ee6 KH\u00c1C, t\u1eeb n\u01a1i m\u00e0 b\u1ea1n kh\u00f4ng th\u1ec3 l\u00e0m ch\u1ee7. N\u00f3 kh\u00f4ng ph\u1ea3i l\u1ed7i c\u1ee7a b\u1ea1n v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 ph\u1ea3i c\u00f3 tr\u00e1ch nhi\u1ec7m cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u n\u00e0y. \u0110\u1ec3 b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n, c\u00f3 l\u00fd do ch\u00ednh \u0111\u00e1ng \u0111\u1ec3 m\u1ed9t s\u1ed1 y\u00eau c\u1ea7u t\u1eeb b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c cache ho\u1eb7c &#8220;t\u1ed1i \u01b0u h\u00f3a&#8221;.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Hau_het_cac_bai_kiem_tra_toc_do_khong_so_sanh_duoc_voi_bai_KIEM_TRA_BANG_MAT_TRAN\"><\/span>6. H\u1ea7u h\u1ebft c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 kh\u00f4ng so s\u00e1nh \u0111\u01b0\u1ee3c v\u1edbi b\u00e0i KI\u1ec2M TRA B\u1eb0NG M\u1eaeT TR\u1ea6N<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Ki\u1ec3m tra b\u1eb1ng m\u1eaft l\u00e0 g\u00ec v\u1eady? V\u1ec1 c\u01a1 b\u1ea3n \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ki\u1ec3m tra trang web c\u1ee7a b\u1ea1n b\u1eb1ng m\u1eaft th\u01b0\u1eddng th\u00f4i. N\u1ebfu trang t\u1ea3i nhanh, b\u1ea1n \u1ed5n r\u1ed3i! Kh\u00f4ng c\u1ea7n ph\u1ea3i lo l\u1eafng v\u1ec1 &#8220;t\u1ed5ng th\u1eddi gian t\u1ea3i trang&#8221;, b\u1edfi v\u00ec nh\u1eefng th\u1ee9 n\u00e0y s\u1ebd t\u1ea3i v\u1ec1 \u1edf ch\u1ebf \u0111\u1ed9 n\u1ec1n, ch\u1ee9 kh\u00f4ng th\u1ef1c s\u1ef1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. B\u1ee5p! B\u1ea1n qu\u1eb3ng c\u00e1i mic \u0111i \u0111\u01b0\u1ee3c r\u1ed3i \u0111\u1ea5y!<\/p>\n\n\n<p>KI\u1ec2M TRA B\u1eb0NG M\u1eaeT n\u00ean l\u00e0 b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 \u0111\u1ea7u ti\u00ean m\u00e0 b\u1ea1n th\u1ef1c hi\u1ec7n. R\u1ed3i sau \u0111\u00f3 b\u1ea1n m\u1edbi c\u1ea7n ki\u1ec3m tra m\u1ecdi th\u1ee9 t\u1ea3i nhanh nh\u01b0 th\u1ebf n\u00e0o tr\u00ean tr\u00ecnh duy\u1ec7t th\u1ef1c th\u00f4ng qua c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a c\u00f4ng c\u1ee5 d\u00e0nh cho nh\u00e0 ph\u00e1t tri\u1ec3n. \u0110i\u1ec1u n\u00e0y g\u1ea7n v\u1edbi th\u1eddi gian th\u1ef1c t\u1ebf h\u01a1n.<\/p>\n\n\n<p><strong>H\u00e3y n\u00f3i cho t\u00f4i bi\u1ebft b\u1ea1n th\u00edch website n\u00e0o h\u01a1n&#8230;m\u1ed9t trang t\u1ea3i \u0111\u1ea7y \u0111\u1ee7 trong v\u00f2ng 3 gi\u00e2y&#8230;hay m\u1ed9t trang t\u1ea3i \u0111\u1ea7y \u0111\u1ee7 trong v\u00f2ng 6 gi\u00e2y? (tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1ecdc ti\u1ebfp nh\u00e9)<\/strong><\/p>\n\n\n<ul><li>N\u1ebfu t\u00f4i n\u00f3i v\u1edbi b\u1ea1n r\u1eb1ng <em>trang t\u1ea3i trong v\u00f2ng 3 gi\u00e2y<\/em> ho\u00e0n to\u00e0n tr\u1ed1ng tr\u01a1n trong <a href=\"https:\/\/kiencang.net\/cach-trang-web-tai-va-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">qu\u00e1 tr\u00ecnh t\u1ea3i v\u1ec1<\/a> v\u00e0 kh\u00f4ng k\u1ebft xu\u1ea5t (render) b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111i\u1ec3m m\u1ed1c 2,8 gi\u00e2y, trong khi <em>trang t\u1ea3i trong v\u00f2ng 6 gi\u00e2y<\/em> xu\u1ea5t hi\u1ec7n m\u1ed9t s\u1ed1 n\u1ed9i dung <em>ngay l\u1eadp t\u1ee9c<\/em> v\u00e0 \u00e2m th\u1ea7m t\u1ea3i c\u00e1c t\u00e0i nguy\u00ean \u00edt quan tr\u1ecdng h\u01a1n \u1edf ch\u1ebf \u0111\u1ed9 n\u1ec1n? L\u00fac n\u00e0y b\u1ea1n th\u00edch trang n\u00e0o h\u01a1n?<\/li><li>Trong tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec1u \u0111\u00f3 v\u1eabn ch\u01b0a r\u00f5 r\u00e0ng, h\u00e0ng ng\u00e0y t\u00f4i v\u1eabn gh\u00e9 th\u0103m su\u1ed1t c\u00e1c trang c\u1ea7n 6 gi\u00e2y \u0111\u1ec3 t\u1ea3i v\u1ec1. V\u00e0 t\u1ea5t c\u1ea3 c\u00e1c c\u00f4ng ty \u1edf trong nh\u00f3m Fortune 500 th\u00ec c\u0169ng v\u1eady&#8230;Trong th\u1ef1c t\u1ebf, nhi\u1ec1u c\u00f4ng ty c\u00f3 website m\u1ea5t v\u00e0i gi\u00e2y \u0111\u1ec3 t\u1ea3i v\u1ec1 \u0111\u1ea7y \u0111\u1ee7 (m\u1eb7c d\u00f9 c\u00e1c th\u00e0nh ph\u1ea7n tr\u1ef1c quan xu\u1ea5t hi\u1ec7n g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c)!<\/li><\/ul>\n\n\n<p>\u0110\u00e2y l\u00e0 \u0111i\u1ec1u ng\u1edb ng\u1ea9n m\u00e0 t\u00f4i mu\u1ed1n n\u00f3i. Nhi\u1ec1u c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 ch\u1eb3ng th\u00e8m t\u00ednh \u0111\u1ebfn \u0111i\u1ec1u \u0111\u00f3. V\u00e0 ngay c\u1ea3 khi h\u1ecd l\u1eadp m\u1ed9t danh s\u00e1ch c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u1eddi gian k\u1ebft xu\u1ea5t ban \u0111\u1ea7u (initial rendering times), c\u00e1c kh\u00e1ch h\u00e0ng ng\u00e2y th\u01a1 (v\u00f4 s\u1ed1 t\u1ed9i) c\u0169ng ch\u1eb3ng bi\u1ebft \u0111\u1ec3 m\u00e0 ch\u00fa \u00fd \u0111\u1ebfn n\u00f3! T\u1ea5t c\u1ea3 nh\u1eefng g\u00ec m\u00e0 h\u1ecd quan t\u00e2m l\u00e0 ch\u1ec9 s\u1ed1 T\u1ed4NG TH\u1edcI GIAN T\u1ea2I TRANG ng\u1edb ng\u1ea9n (\u0111\u00f4i khi \u0111i k\u00e8m v\u1edbi m\u1ed9t s\u1ed1 th\u00f4ng \u0111i\u1ec7p c\u1ea3nh b\u00e1o m\u1edbi \u0111\u00e1ng s\u1ee3 l\u00e0m sao).<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Giai_quyet_va_phan_bac_cac_loi_don_pho_bien\"><\/span>7. Gi\u1ea3i quy\u1ebft v\u00e0 ph\u1ea3n b\u00e1c c\u00e1c l\u1eddi \u0111\u1ed3n ph\u1ed5 bi\u1ebfn.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Nh\u01b0 m\u1ecdi khi, kh\u00e1ch h\u00e0ng \u0111\u01b0a ra c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 c\u00e2u h\u1ecfi c\u00f3 v\u1ebb r\u1ea5t logic:<\/p>\n\n\n<p><strong>&#8220;C\u00f3 t\u1ed1c \u0111\u1ed9 website nhanh v\u00e0 \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 cao l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng trong SEO.&#8221;<\/strong><\/p>\n\n\n<p>Kh\u00f4ng th\u1ef1c s\u1ef1 ch\u00ednh x\u00e1c \u0111\u00e2u. Tr\u1eeb khi trang b\u1ea1n ch\u1eadm ch\u1ea1p qu\u00e1 m\u1ee9c (super duper slow), c\u00f2n kh\u00f4ng th\u00ec c\u00e2u n\u00f3i b\u00f4i \u0111\u1eadm \u1edf tr\u00ean kh\u00e1 sai \u0111\u00f3; n\u00f3 th\u1eadm ch\u00ed kh\u00f4ng \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t huy\u1ec1n tho\u1ea1i (l\u1eddi \u0111\u1ed3n). B\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 x\u00e1c nh\u1eadn \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u top 10 k\u1ebft qu\u1ea3 cho c\u00e1c t\u1eeb kh\u00f3a ng\u1eabu nhi\u00ean. Kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ebfm khi b\u1ea1n t\u00ecm th\u1ea5y c\u00e1c k\u1ebft qu\u1ea3 top \u0111\u1ea7u m\u1ea5t 3-5 gi\u00e2y \u0111\u1ec3 t\u1ea3i v\u1ec1 (theo c\u00e1c b\u00e0i ki\u1ec3m tra v\u1ec1 t\u1ed1c \u0111\u1ed9, t\u1ee9c l\u00e0 v\u1ec1 l\u00fd thuy\u1ebft c\u00e1c trang nh\u01b0 v\u1eady b\u1ecb xem l\u00e0 ch\u1eadm).<\/p>\n\n\n<p>Nh\u01b0 \u0111\u00e3 n\u00f3i, c\u00f3 \u0111\u01b0\u1ee3c trang web nhanh c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n m\u1ee9c \u0111\u1ed9 g\u1eafn k\u1ebft c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i. T\u00f4i tin r\u1eb1ng \u0111i\u1ec1u \u0111\u00f3 t\u1ed1t cho th\u1ee9 h\u1ea1ng SEO \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 n\u00e0o \u0111\u00f3. Cho d\u00f9 c\u00f3 th\u1ebf n\u00e0o \u0111i ch\u0103ng n\u1eefa, t\u1ed1c \u0111\u1ed9 v\u1eabn t\u1ed1t cho chuy\u1ec3n \u0111\u1ed5i.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00fd c\u1ee7a Johnny l\u00e0 d\u00f9 t\u1ed1c \u0111\u1ed9 trang ch\u1eafc ch\u1eafn gi\u00fap c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng, t\u1ed1t cho chuy\u1ec3n \u0111\u1ed5i, nh\u01b0ng ch\u1ec9 tr\u1eeb khi website c\u1ee7a b\u1ea1n qu\u00e1 ch\u1eadm ch\u1ea1p, c\u00f2n kh\u00f4ng th\u00ec b\u1ea1n kh\u00f4ng c\u1ea7n lo l\u1eafng v\u1ec1 \u0111i\u1ec1u \u0111\u00f3. R\u1ea5t nhi\u1ec1u trang thu\u1ed9c top 10 kh\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 &#8220;nhanh&#8221; khi ch\u1ea5m \u0111i\u1ec3m b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 \u0111o. <\/p>\n\n\n<p><strong>&#8220;B\u1ea1n ch\u1eb3ng th\u1ec3 c\u00f3 trang web t\u1ed1t\/nhanh m\u00e0 \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 l\u1ea1i th\u1ea5p \u0111\u01b0\u1ee3c!&#8221;<\/strong><\/p>\n\n\n<p>B\u1ea1n n\u00f3i website n\u00e0o th\u1ebf? C\u1ee9 th\u1eed soi nhi\u1ec1u trang web ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 b\u1ea1n bi\u1ebft xem n\u00e0o, v\u00e0 coi h\u1ecd c\u00f3 \u0111i\u1ec3m s\u1ed1 bao nhi\u00eau. N\u00f3i nhanh cho vu\u00f4ng n\u00e0y, h\u00e3y th\u1eed c\u1ea3 c\u00e1c trang c\u1ee7a Google n\u1eefa \u0111\u1ec3 xem ch\u00ednh h\u1ecd \u0111i ng\u01b0\u1ee3c l\u1ea1i c\u00f4ng c\u1ee5 GPI nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00dd c\u1ee7a Johnny l\u00e0 c\u00f3 nhi\u1ec1u h\u1ecdc sinh r\u1ea5t kh\u00e1 nh\u01b0ng \u0111i\u1ec3m s\u1ed1 t\u1ea1i tr\u01b0\u1eddng c\u00f3 khi kh\u00f4ng cao \u0111\u00e2u. \u0110\u00e2y l\u00e0 th\u1ef1c t\u1ebf m\u00e0 b\u1ea1n hay g\u1eb7p, m\u00e0 kh\u1ea3 n\u0103ng, h\u1ed3i x\u01b0a b\u1ea1n c\u0169ng th\u1ebf \u1ea5y ch\u1ee9!<\/p>\n\n\n<p><strong>&#8220;N\u1ebfu \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 kh\u00f4ng quan tr\u1ecdng, t\u1ea1i sao n\u00f3 l\u1ea1i t\u1ed3n t\u1ea1i?&#8221;<\/strong><\/p>\n\n\n<p>N\u00f3 nh\u01b0 m\u1ed9t danh s\u00e1ch ki\u1ec3m tra h\u1eefu \u00edch nh\u01b0ng, ch\u1ec9 cho nh\u1eefng ai c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc \u0111\u01b0\u1ee3c ch\u00fang m\u00e0 th\u00f4i. M\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 th\u1ef1c s\u1ef1 quan tr\u1ecdng, c\u00f2n m\u1ed9t s\u1ed1 th\u00ec kh\u00f4ng.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00dd c\u1ee7a Jonny l\u00e0 phi\u1ebfu k\u1ebft qu\u1ea3 x\u00e9t nghi\u1ec7m \u1edf b\u1ec7nh vi\u1ec7n c\u00f3 \u00edch cho b\u00e1c s\u0129, v\u00ec h\u1ecd \u0111\u1ecdc hi\u1ec3u \u0111\u01b0\u1ee3c n\u00f3. Ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng, kh\u00f4ng bi\u1ebft g\u00ec (ho\u1eb7c h\u1ecdc ch\u01b0a t\u1edbi) c\u1ed1 \u0111\u1ecdc \u0111\u1ec3 t\u1ef1 chu\u1ea9n b\u1ec7nh th\u00ec c\u00f3 khi l\u1ea1i mua nh\u1ea7m thu\u1ed1c \u0111\u1ea5y! (\u0111\u1eb7c bi\u1ec7t ki\u1ec3u h\u1ecdc ch\u01b0a t\u1edbi l\u1ea1i r\u1ea5t hay c\u1ed1 \u0111\u1ecdc v\u00e0 c\u00e3i b\u00e1c s\u0129). V\u00e2ng, gi\u1ea3 \u0111\u1ecbnh \u1edf \u0111\u00e2y l\u00e0 b\u00e1c s\u0129 ch\u1ea5t l\u01b0\u1ee3ng nh\u00e9.<\/p>\n\n\n<p><strong>&#8220;T\u1ea1i sao c\u00e1c \u0111\u1ed1i th\u1ee7 c\u1ee7a t\u00f4i l\u1ea1i c\u00f3 t\u1ed1c \u0111\u1ed9 website nhanh h\u01a1n v\u00e0 \u0111i\u1ec3m s\u1ed1 cao h\u01a1n c\u1ee7a t\u00f4i?&#8221;<\/strong><\/p>\n\n\n<p>C\u00e1i \u0111\u00f3 c\u00f3 th\u1ec3 c\u00f3 r\u1ea5t nhi\u1ec1u nguy\u00ean nh\u00e2n. Nhi\u1ec1u ng\u01b0\u1eddi c\u00f3 m\u00e1y ch\u1ee7 web nhanh h\u01a1n, ho\u1eb7c code \u0111\u01b0\u1ee3c vi\u1ebft t\u1ed1t h\u01a1n, ho\u1eb7c \u00edt plugin h\u01a1n, ho\u1eb7c t\u00e0i nguy\u00ean c\u1ea7n ph\u1ea3i t\u1ea3i v\u1ec1 \u00edt h\u01a1n, ho\u1eb7c \u00edt t\u00e0i nguy\u00ean c\u1ee7a b\u00ean th\u1ee9 ba h\u01a1n. Ch\u1ec9 v\u00ec b\u1ea1n c\u00e0i plugin cache ho\u1eb7c thu\u00ea chuy\u00ean gia t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 kh\u00f4ng \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c r\u1eb1ng trang c\u1ee7a b\u1ea1n t\u1ed1t h\u01a1n \u0111\u1ed1i th\u1ee7 v\u1ec1 m\u1eb7t t\u1ed1c \u0111\u1ed9.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00fd c\u1ee7a Johnny l\u00e0 n\u1ebfu b\u1ea1n ngh\u00e8o h\u01a1n nh\u1eefng ng\u01b0\u1eddi \u0111\u1ed3ng trang l\u1ee9a th\u00ec \u0111i\u1ec1u \u0111\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u nguy\u00ean nh\u00e2n. C\u00f3 th\u1ec3 v\u00ec b\u1ed1 m\u1eb9 c\u1ee7a h\u1ecd gi\u00e0u h\u01a1n b\u1ed1 m\u1eb9 c\u1ee7a b\u1ea1n, h\u1ecd c\u00f3 \u00f4ng ch\u00fa n\u00e0o \u0111\u00f3 quen bi\u1ebft nhi\u1ec1u, h\u1ecd l\u1ea5y \u0111\u01b0\u1ee3c c\u00f4 v\u1ee3 con nh\u00e0 gia th\u1ebf, v\u00e2n v\u00e2n v\u00e0 m\u00e2y m\u00e2y. Ch\u1ec9 v\u00ec ng\u00e0y x\u01b0a b\u1ea1n h\u1ecdc gi\u1ecfi h\u01a1n hay r\u1ea5t ch\u0103m \u0111\u1ecdc s\u00e1ch v\u1ec1 kinh t\u1ebf, \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng \u0111\u1ea3m b\u1ea3o ch\u1eafc ch\u1eafn b\u1ea1n s\u1ebd th\u00e0nh c\u00f4ng h\u01a1n v\u1ec1 t\u00e0i ch\u00ednh so v\u1edbi ng\u01b0\u1eddi kh\u00e1c nh\u00e9.<\/p>\n\n\n<p><strong>&#8220;V\u00e0o m\u1ed9t ng\u00e0y \u0111\u1eb9p tr\u1eddi, t\u00f4i c\u00e0i m\u1ed9t s\u1ed1 plugin ho\u1eb7c thu\u00ea m\u1ed9t ng\u01b0\u1eddi kh\u00e1c t\u1ed1i \u01b0u, v\u00e0 h\u1ecd \u0111\u00e3 gi\u00fap n\u00e2ng \u0111i\u1ec3m s\u1ed1 t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00f4i l\u00ean 100\/100&#8221;<\/strong><\/p>\n\n\n<p>T\u00f9y \u0111\u1eb1ng \u1ea5y th\u00f4i. Chu\u1ea9n \u0111\u1ea5y, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m s\u1ed1 100\/100 n\u1ebfu b\u1ea1n kh\u00f4ng quan t\u00e2m \u0111\u1ebfn b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec kh\u00e1c ngo\u00e0i \u0111i\u1ec3m s\u1ed1, nh\u01b0ng b\u1ea1n c\u00f3 th\u1ec3 v\u00f4 t\u00ecnh l\u00e0m ch\u1eadm trang ho\u1eb7c g\u00e2y c\u1ea3n tr\u1edf tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng n\u1ebfu l\u00e0m nh\u01b0 v\u1eady. Suy cho c\u00f9ng th\u00ec, nh\u1eefng \u0111\u1ec1 xu\u1ea5t c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 \u0111\u01a1n gi\u1ea3n ch\u1ec9 l\u00e0 \u0110\u1ec0 XU\u1ea4T th\u00f4i&#8230;ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c ch\u1ec9 d\u1eabn d\u1ef1a tr\u00ean kinh nghi\u1ec7m th\u1ef1c t\u1ebf v\u1edbi website v\u00e0 do v\u1eady b\u1ea1n kh\u00f4ng ph\u1ea3i tu\u00e2n th\u1ee7 n\u00f3 trong m\u1ecdi t\u00ecnh hu\u1ed1ng.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00dd c\u1ee7a Johnny l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 l\u00e0 ng\u01b0\u1eddi gi\u00e0u c\u00f3 nh\u1ea5t b\u1ea3n \u0111\u1ea5y, nh\u01b0ng b\u1ea1n ch\u1eb3ng c\u00f3 n\u1ed5i m\u1ed9t ti\u1ebfng th\u01b0 gi\u00e3n, v\u1ee3 th\u00ec ch\u00e1n b\u1ea1n, con c\u00e1i ch\u1eb3ng \u0111\u00e2u v\u00e0o \u0111\u00e2u, c\u00f2n b\u1ea1n b\u00e8 th\u00ec xa l\u00e1nh.<\/p>\n\n\n<p><strong>&#8220;\u0110\u00e2y ch\u1ea3 th\u00e8m quan t\u00e2m b\u1ea1n n\u00f3i c\u00e1i g\u00ec \u0111\u00e2u! C\u1ee9 l\u00e0m website c\u1ee7a \u0111\u00e2y nhanh l\u00e0 \u0111\u01b0\u1ee3c v\u1edbi \u0111i\u1ec3m s\u1ed1 A+ v\u00e0 100\/100 nh\u00e9.&#8221;<\/strong><\/p>\n\n\n<p>OK men. B\u1ea1n ch\u1ec9 vi\u1ec7c x\u00f3a h\u1ebft plugin v\u00e0 s\u1eed d\u1ee5ng giao di\u1ec7n \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u01b0\u1ee3c th\u00f4i m\u00e0. C\u00f2n n\u1eefa, nh\u1edb \u0111\u1eebng c\u00f3 \u0111\u1ec3 h\u01a1n 10 \u1ea3nh trong b\u00e0i vi\u1ebft, v\u00e0 \u0111\u1eebng s\u1eed d\u1ee5ng Google Analytics ho\u1eb7c Google webfonts nh\u00e9.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00dd c\u1ee7a Johnny l\u00e0, n\u1ebfu b\u1ea1n ch\u1eb3ng mu\u1ed1n ai l\u00e0m phi\u1ec1n \u0111\u1ebfn b\u1ea1n, ch\u1eb3ng mu\u1ed1n c\u00f3 b\u1ea5t k\u1ef3 c\u1ea3m x\u00fac kh\u00f3 ch\u1ecbu n\u00e0o ng\u01b0\u1eddi kh\u00e1c g\u00e2y cho b\u1ea1n th\u00ec c\u1ee9 v\u00e0o hang n\u00fai s\u1ed1ng m\u1ed9t m\u00ecnh nh\u00e9! (\u1edd, l\u00fac \u0111\u1ea5y b\u1ea1n l\u1ea1i l\u00e0 ng\u01b0\u1eddi l\u00e0m phi\u1ec1n khung c\u1ea3nh th\u01a1 m\u1ed9ng xung quanh \u0111\u1ea5y- ch\u1ea1y tr\u1eddi kh\u00f4ng kh\u1ecfi n\u1eafng!)<\/p>\n\n\n<p><strong>&#8220;Nh\u01b0ng c\u00e1c b\u00e0i ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 th\u1eadt \u0111\u00e1ng s\u1ee3! L\u00e0m th\u1ebf n\u00e0o t\u00f4i bi\u1ebft \u0111\u01b0\u1ee3c c\u1ea7n ch\u1ec9nh s\u1eeda c\u00e1i g\u00ec v\u00e0 c\u00e1ch ch\u1ec9nh s\u1eeda ch\u00fang?&#8221;<\/strong><\/p>\n\n\n<p>N\u00f3 c\u00f3 th\u1ec3 th\u00fac \u0111\u1ea9y b\u1ea1n d\u00e0nh th\u1eddi gian \u0111\u1ecdc v\u00e0 h\u1ecdc c\u00e1ch c\u00e1c y\u1ebfu t\u1ed1 trong website ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o. C\u00f3 th\u1ec3 b\u1ea1n s\u1ebd ph\u1ea3i l\u00e0m vi\u1ec7c nh\u01b0 m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean trong v\u00e0i n\u0103m. Ho\u1eb7c b\u1ea1n c\u00f3 th\u1ec3 thu\u00ea ai \u0111\u00f3 nhi\u1ec1u kinh nghi\u1ec7m h\u01a1n b\u1ea1n.<\/p>\n\n\n<p><em>Ch\u00fa th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/em>: \u00dd c\u1ee7a Johhny l\u00e0 thay v\u00ec kh\u1ed5 s\u1edf, m\u1ea5t th\u1eddi gian c\u00e0y cu\u1ed1c h\u1ecdc c\u00e1ch t\u1ed1i \u01b0u th\u00ec b\u1ea1n n\u00ean thu\u00ea ai \u0111\u00f3 gi\u1ed1ng nh\u01b0 anh \u1ea5y \u0111\u1ec3 t\u1ed1i \u01b0u cho b\u1ea1n \u0111i!<\/p>\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft Why Google Pagespeed, Pingdom, and GTmetrix scores don\u2019t matter, t\u00e1c gi\u1ea3: Johnny Nguyen<\/em>, <em>trang wpjohnny[.]com, ng\u01b0\u1eddi d\u1ecbch: Nguy\u1ec5n \u0110\u1ee9c Anh)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft tuy\u1ec7t hay c\u1ee7a Johnny Nguyen (d\u00f9 t\u00f4i kh\u00f4ng \u0111\u1ed3ng \u00fd 100% c\u00e1c \u00fd ki\u1ebfn c\u1ee7a anh \u1ea5y). N\u00f3i l\u00ean bi\u1ebft bao t\u00e2m s\u1ef1 c\u1ee7a ng\u01b0\u1eddi \u0111i t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, t\u1ed1c \u0111\u1ed9 trang. V\u00e0 n\u00f3 c\u0169ng gi\u00fap kh\u00e1ch h\u00e0ng th\u00f4i \u00e1m \u1ea3nh b\u1edfi c\u00e1i m\u00e0u &hellip;<\/p>\n","protected":false},"author":1,"featured_media":14057,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[260],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u1ea1i sao \u0111i\u1ec3m s\u1ed1 Google PageSpeed, Pingdom v\u00e0 GTmetrix l\u1ea1i kh\u00f4ng quan tr\u1ecdng &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/diem-so-toc-do-khong-quan-trong\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ea1i sao \u0111i\u1ec3m s\u1ed1 Google PageSpeed, Pingdom v\u00e0 GTmetrix l\u1ea1i kh\u00f4ng quan tr\u1ecdng &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft tuy\u1ec7t hay c\u1ee7a Johnny Nguyen (d\u00f9 t\u00f4i kh\u00f4ng \u0111\u1ed3ng \u00fd 100% c\u00e1c \u00fd ki\u1ebfn c\u1ee7a anh \u1ea5y). N\u00f3i l\u00ean bi\u1ebft bao t\u00e2m s\u1ef1 c\u1ee7a ng\u01b0\u1eddi \u0111i t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, t\u1ed1c \u0111\u1ed9 trang. 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