{"id":13771,"date":"2019-12-02T10:57:39","date_gmt":"2019-12-02T10:57:39","guid":{"rendered":"https:\/\/kiencang.net\/?p=13771"},"modified":"2022-07-31T05:33:28","modified_gmt":"2022-07-30T22:33:28","slug":"plugin-flying-images","status":"publish","type":"post","link":"https:\/\/kiencang.net\/plugin-flying-images\/","title":{"rendered":"Gi\u1edbi thi\u1ec7u Flying Images: plugin lazy load \u1ea3nh hi\u1ec7u su\u1ea5t cao"},"content":{"rendered":"\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-6577d21691ebf\" ><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-6577d21691ebf\"  type=\"checkbox\" id=\"item-6577d21691ebf\"><\/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\/plugin-flying-images\/#Lazy_loading_hoat_dong_nhu_the_nao\" title=\"Lazy loading ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?\">Lazy loading ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/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\/plugin-flying-images\/#Lazy_loading_kieu_Native_nghia_la_gi\" title=\"Lazy loading ki\u1ec3u Native ngh\u0129a l\u00e0 g\u00ec?\">Lazy loading ki\u1ec3u Native ngh\u0129a l\u00e0 g\u00ec?<\/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\/plugin-flying-images\/#Plugin_Flying_Images_co_gi_hay\" title=\"Plugin Flying Images c\u00f3 g\u00ec hay?\">Plugin Flying Images c\u00f3 g\u00ec hay?<\/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\/plugin-flying-images\/#Plugin_Flying_Images_khac_biet_voi_cac_plugin_lazy_load_khac_nhu_the_nao\" title=\"Plugin Flying Images kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c plugin lazy load kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o?\">Plugin Flying Images kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c plugin lazy load kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o?<\/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\/plugin-flying-images\/#Quan_diem_cua_nguoi_dich_ve_plugin_nay\" title=\"Quan \u0111i\u1ec3m c\u1ee7a ng\u01b0\u1eddi d\u1ecbch v\u1ec1 plugin n\u00e0y\">Quan \u0111i\u1ec3m c\u1ee7a ng\u01b0\u1eddi d\u1ecbch v\u1ec1 plugin n\u00e0y<\/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\/plugin-flying-images\/#Cap_Nhat\" title=\"C\u1eadp Nh\u1eadt\">C\u1eadp Nh\u1eadt<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"lazy-loading-ho\u1ea1t-d\u1ed9ng-nh\u01b0-th\u1ebf-nao\"><span class=\"ez-toc-section\" id=\"Lazy_loading_hoat_dong_nhu_the_nao\"><\/span>Lazy loading ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u1ed9t <a href=\"https:\/\/kiencang.net\/the-img-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ea3nh th\u00f4ng th\u01b0\u1eddng trong HTML<\/a> tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;img src=\"speed-family.jpg\" width=\"100%\"\/&gt; <\/pre>\n\n\n\n<p>C\u00e1c plugin lazy loading s\u1ebd ghi l\u1ea1i \u0111o\u1ea1n m\u00e3 tr\u00ean th\u00e0nh:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;img <span class=\"hljs-keyword\">data<\/span>-src=<span class=\"hljs-string\">\"speed-family.jpg\"<\/span> width=<span class=\"hljs-string\">\"100%\"<\/span>\/&gt;<\/pre>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ec3 \u00fd th\u1ea5y l\u00e0 thu\u1ed9c t\u00ednh <em>src<\/em> \u0111\u01b0\u1ee3c thay th\u00e0nh <em>data-src<\/em>.<\/p>\n\n\n\n<p>Khi kh\u00f4ng c\u00f3 <em>src<\/em>, tr\u00ecnh duy\u1ec7t s\u1ebd kh\u00f4ng t\u1ea3i \u1ea3nh ngay l\u1eadp t\u1ee9c. Sau \u0111\u00f3 m\u1ed9t \u0111o\u1ea1n m\u00e3 JavaScript nh\u1ecf s\u1ebd ki\u1ec3m tra xem li\u1ec7u r\u1eb1ng \u1ea3nh c\u00f3 n\u1eb1m trong khung nh\u00ecn tr\u00ecnh duy\u1ec7t hay kh\u00f4ng (viewport &#8211; khu v\u1ef1c n\u1eb1m trong ph\u1ea7n quan s\u00e1t c\u1ee7a ng\u01b0\u1eddi xem tr\u00ean tr\u00ecnh duy\u1ec7t) v\u00e0 n\u1ebfu n\u00f3 n\u1eb1m trong \u0111\u00f3, <em>data-src<\/em> \u0111\u01b0\u1ee3c thay th\u1ebf th\u00e0nh <em>src<\/em>, v\u00e0 <a href=\"https:\/\/kiencang.net\/cach-trang-web-tai-va-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">k\u00edch ho\u1ea1t tr\u00ecnh duy\u1ec7t t\u1ea3i v\u00e0 hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh<\/a>.<\/p>\n\n\n\n<p>Xem video gi\u1edbi thi\u1ec7u n\u1ebfu b\u1ea1n mu\u1ed1n:<\/p>\n\n\n\n<iframe loading=\"lazy\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/_qSrcBLXi7g\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lazy-loading-ki\u1ec3u-native-nghia-la-gi\"><span class=\"ez-toc-section\" id=\"Lazy_loading_kieu_Native_nghia_la_gi\"><\/span>Lazy loading ki\u1ec3u Native ngh\u0129a l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Tr\u00ecnh duy\u1ec7t Chrome \u0111\u00e3 m\u1edf r\u1ed9ng t\u00ednh n\u0103ng v\u1edbi thu\u1ed9c t\u00ednh &#8220;native lazy-loading&#8221;. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u k\u1ef9 h\u01a1n \u1edf <a rel=\"noreferrer noopener\" href=\"https:\/\/web.dev\/native-lazy-loading\" target=\"_blank\">li\u00ean k\u1ebft n\u00e0y<\/a> \/ ti\u1ebfng Anh (Speed.Family c\u0169ng \u0111\u00e3 d\u1ecbch ho\u00e0n ch\u1ec9nh b\u00e0i vi\u1ebft sang ti\u1ebfng Vi\u1ec7t, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o: <a rel=\"noreferrer noopener\" href=\"https:\/\/kiencang.net\/native-lazy-loading-cho-web\/\" target=\"_blank\">Native lazy-loading l\u00e0 g\u00ec?<\/a>)<\/p>\n\n\n\n<p>\u0110i\u1ec3m c\u1ea3i ti\u1ebfn c\u1ee7a native lazy-loading l\u00e0 n\u00f3 KH\u00d4NG c\u1ea7n JavaScript v\u00e0 y\u1ebfu t\u1ed1 th\u1eadm ch\u00ed c\u00f2n quan tr\u1ecdng h\u01a1n l\u00e0 n\u00f3 s\u1ebd <em>nhanh h\u01a1n <\/em>nh\u1edd qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n n\u1ed9i b\u1ed9 b\u1edfi tr\u00ecnh duy\u1ec7t.<\/p>\n\n\n\n<p>\u0110o\u1ea1n m\u00e3 gi\u1edd \u0111\u00e2y tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y (th\u00eam thu\u1ed9c t\u00ednh loading=&#8221;lazy&#8221; v\u00e0 gi\u1eef nguy\u00ean src kh\u00f4ng c\u1ea7n \u0111\u1ed5i th\u00e0nh data-src):<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;img src=<span class=\"hljs-string\">\"speed-family.jpg\"<\/span> loading=<span class=\"hljs-string\">\"lazy\"<\/span> <span class=\"hljs-built_in\">width<\/span>=<span class=\"hljs-string\">\"100%\"<\/span>\/&gt;<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"plugin-flying-images-co-gi-hay\"><span class=\"ez-toc-section\" id=\"Plugin_Flying_Images_co_gi_hay\"><\/span>Plugin Flying Images c\u00f3 g\u00ec hay?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2022\/07\/flying-images-plugin.png\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"249\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2022\/07\/flying-images-plugin.png\" alt=\"plugin Flying Images\" class=\"wp-image-22323\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2022\/07\/flying-images-plugin.png 768w, https:\/\/kiencang.net\/wp-content\/uploads\/2022\/07\/flying-images-plugin-300x97.png 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/div>\n\n\n<p>Flying Images l\u00e0 plugin lazy loading c\u00f3 hi\u1ec7u su\u1ea5t cao. N\u00f3 s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng lazy loading &#8220;b\u1ea3n \u0111\u1ecba\/native&#8221; c\u1ee7a tr\u00ecnh duy\u1ec7t khi c\u00f3 th\u1ec3 (hi\u1ec7n ch\u1ec9 c\u00f3 tr\u00ean Google Chrome, c\u1eadp nh\u1eadt: hi\u1ec7n c\u00f3 nhi\u1ec1u tr\u00ecnh duy\u1ec7t l\u1edbn \u0111\u00e3 th\u00eam t\u00ednh n\u0103ng n\u00e0y), v\u1edbi nh\u1eefng tr\u00ecnh duy\u1ec7t kh\u00f4ng h\u1ed7 tr\u1ee3 n\u00f3 v\u1eabn s\u1eed d\u1ee5ng JavaScript \u0111\u1ec3 th\u1ef1c hi\u1ec7n lazy loading.<\/p>\n\n\n\n<p>Flying Images c\u00f3 \u0111i\u1ec3m th\u00fa v\u1ecb l\u00e0 n\u00f3 t\u1ea3i \u1ea3nh tr\u01b0\u1edbc khi b\u1ee9c \u1ea3nh \u0111\u00f3 n\u1eb1m trong khung nh\u00ecn (\u0111\u00e2y l\u00e0 t\u00ednh n\u0103ng r\u1ea5t quan tr\u1ecdng gi\u00fap c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng, tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng tr\u1ec5. M\u1ed9t plugin lazy load r\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c c\u0169ng c\u00f3 t\u00ednh n\u0103ng t\u01b0\u01a1ng t\u1ef1 l\u00e0 <a href=\"https:\/\/kiencang.net\/gioi-thieu-plugin-a3-lazy-load\/\" target=\"_blank\" rel=\"noreferrer noopener\">a3 Lazy Load<\/a>).<\/p>\n\n\n\n<p>Nhi\u1ec1u ng\u01b0\u1eddi lo l\u1eafng kh\u00f4ng <a rel=\"noreferrer noopener\" href=\"https:\/\/kiencang.net\/lazy-load-anh-va-video\/\" target=\"_blank\">s\u1eed d\u1ee5ng lazy loading \u1ea3nh<\/a> v\u00ec n\u00f3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u \u0111\u00f3 l\u00e0 c\u00f3 th\u1eadt v\u00ec hi\u1ec7n t\u01b0\u1ee3ng gi\u1eadt khi t\u1ea3i \u1ea3nh, nh\u1ea5t l\u00e0 tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n y\u1ebfu ho\u1eb7c hosting g\u1ed1c \u1edf xa ng\u01b0\u1eddi d\u00f9ng (v\u00ed d\u1ee5 ng\u01b0\u1eddi d\u00f9ng \u1edf Vi\u1ec7t Nam nh\u01b0ng hosting l\u1ea1i n\u1eb1m \u1edf Hoa K\u1ef3, ch\u00e2u \u00c2u). Th\u1eadm ch\u00ed trong tr\u01b0\u1eddng h\u1ee3p t\u1ec7 nh\u1ea5t khi ng\u01b0\u1eddi d\u00f9ng \u0111\u1ecdc \u0111\u1ebfn ph\u1ea7n c\u00f3 \u1ea3nh, m\u00e0 \u1ea3nh m\u1edbi b\u1eaft \u0111\u1ea7u t\u1ea3i \u0111\u01b0\u1ee3c m\u1ed9t ch\u00fat (d\u1eabn \u0111\u1ebfn kho\u1ea3ng tr\u1ed1ng kh\u00f3 ch\u1ecbu).<\/p>\n\n\n\n<p>Nh\u01b0ng v\u1edbi plugin n\u00e0y, hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3 gi\u1ea3m \u0111i r\u1ea5t nhi\u1ec1u, \u0111\u1ebfn m\u1ee9c r\u1ea5t nh\u1ecf nh\u1edd plugin t\u1ea3i tr\u01b0\u1edbc \u1ea3nh khi n\u00f3 \u0111i v\u00e0o khung nh\u00ecn.<\/p>\n\n\n\n<p>P\/S: Hi\u1ec7n t\u01b0\u1ee3ng t\u1ea3i ch\u1eadm v\u1eabn c\u00f3 kh\u1ea3 n\u0103ng x\u1ea3y ra v\u1edbi plugin Flying Images n\u1ebfu \u0111\u01b0\u1eddng truy\u1ec1n internet qu\u00e1 th\u1ea5p, nh\u01b0ng v\u1edbi \u0111\u01b0\u1eddng truy\u1ec1n th\u1ea5p nh\u01b0 v\u1eady th\u00ec ngay c\u1ea3 khi kh\u00f4ng s\u1eed d\u1ee5ng lazy load th\u00ec \u1ea3nh c\u0169ng s\u1ebd r\u1ea5t kh\u00f3 t\u1ea3i. M\u1ed9t l\u00fd do n\u1eefa l\u00e0 hi\u1ec7n \u0111\u01b0\u1eddng truy\u1ec1n th\u1ea5p r\u1ea5t hi\u1ebfm g\u1eb7p (tr\u1eeb khi \u0111\u1ee9t c\u00e1p v\u00e0 hosting c\u1ee7a b\u1ea1n qu\u00e1 xa Vi\u1ec7t Nam). Do v\u1eady ch\u00fang ta c\u00f3 nhi\u1ec1u l\u00fd do \u0111\u1ec3 t\u1ef1 tin s\u1eed d\u1ee5ng lazy load tr\u00ean h\u1ea7u h\u1ebft website.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"plugin-flying-images-khac-bi\u1ec7t-v\u1edbi-cac-plugin-lazy-load-khac-nh\u01b0-th\u1ebf-nao\"><span class=\"ez-toc-section\" id=\"Plugin_Flying_Images_khac_biet_voi_cac_plugin_lazy_load_khac_nhu_the_nao\"><\/span>Plugin Flying Images kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c plugin lazy load kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul><li><strong>S\u1eed d\u1ee5ng native lazy loading<\/strong> &#8211; N\u00f3 s\u1eed d\u1ee5ng native lazy loading khi c\u00f3 th\u1ec3 (nh\u01b0 \u0111\u00e3 n\u00f3i hi\u1ec7n m\u1edbi ch\u1ec9 c\u00f3 tr\u00ean tr\u00ecnh duy\u1ec7t Chrome), v\u1edbi nh\u1eefng tr\u00ecnh duy\u1ec7t kh\u00e1c n\u00f3 s\u1eed d\u1ee5ng JavaScript \u0111\u1ec3 t\u1ea3i l\u01b0\u1eddi \u1ea3nh;<\/li><li><strong>T\u1ea3i \u1ea3nh tr\u01b0\u1edbc khi n\u00f3 \u0111i v\u00e0o khung nh\u00ecn c\u1ee7a ng\u01b0\u1eddi xem<\/strong> &#8211; Trong khi c\u00e1c plugin kh\u00e1c t\u1ea3i \u1ea3nh khi n\u00f3 &#8220;\u1edf b\u00ean trong&#8221; khung nh\u00ecn, Flying Images t\u1ea3i \u1ea3nh khi ch\u00fang s\u1eafp s\u1eeda \u0111i v\u00e0o khung nh\u00ecn, gi\u00fap gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng gi\u1eadt, l\u1ed7i g\u1ea7n nh\u01b0 100%;<\/li><li><strong>JavaScript nh\u1ecf g\u1ecdn<\/strong> &#8211;&nbsp; Ch\u1ec9 c\u00f3 dung l\u01b0\u1ee3ng 0,5 KB \u1edf d\u1ea1ng t\u1ed1i \u01b0u (minified) v\u00e0 <a href=\"https:\/\/kiencang.net\/bat-nen-gzip\/\" target=\"_blank\" rel=\"noreferrer noopener\">n\u00e9n gzip<\/a>;<\/li><li><strong>T\u00f9y ch\u1ecdn ch\u1ec9 s\u1eed d\u1ee5ng native<\/strong> &#8211; Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n ch\u1ec9 mu\u1ed1n thi\u1ebft l\u1eadp lazy load v\u1edbi nh\u1eefng ai s\u1eed d\u1ee5ng tr\u00ecnh duy\u1ec7t Chrome c\u00f2n c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00e1c th\u00ec kh\u00f4ng lazy loading, b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n sang &#8220;native only&#8221;;<\/li><li><strong>Vi\u1ebft l\u1ea1i to\u00e0n b\u1ed9 HTML<\/strong> &#8211; Kh\u00f4ng bao gi\u1edd b\u1ecf l\u1ee1 b\u1ea5t c\u1ee9 \u1ea3nh n\u00e0o kh\u1ecfi ch\u1ee9c n\u0103ng lazy loading (th\u1eadm ch\u00ed l\u00e0 nh\u1eefng \u1ea3nh n\u1eb1m trong plugin th\u01b0 vi\u1ec7n\/gallery);<\/li><li><strong>Placeholder trong su\u1ed1t<\/strong> &#8211; M\u1ed9t <a href=\"https:\/\/kiencang.net\/hinh-anh-ma-hoa-base64\/\">\u1ea3nh trong su\u1ed1t base64<\/a> \u0111\u01b0\u1ee3c th\u00eam v\u00e0o t\u1ea5t c\u1ea3 c\u00e1c \u1ea3nh. Kh\u00f4ng c\u00f2n hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y trong khi t\u1ea3i \u1ea3nh;<\/li><li><strong>T\u00ednh n\u0103ng lo\u1ea1i tr\u1eeb t\u1eeb kh\u00f3a<\/strong> &#8211; H\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 plugin lazy loading cung c\u1ea5p t\u00ednh n\u0103ng lo\u1ea1i tr\u1eeb, tuy nhi\u00ean Flying Images c\u00f3 th\u1ec3 lo\u1ea1i tr\u1eeb c\u1ea3 \u1ea3nh t\u1eeb c\u00e1c node cha c\u1ee7a \u1ea3nh. H\u1eefu \u00edch trong tr\u01b0\u1eddng h\u1ee3p \u1ea3nh c\u1ee7a b\u1ea1n kh\u00f4ng c\u00f3 <a href=\"https:\/\/kiencang.net\/id-class-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">class CSS<\/a>;<\/li><li><strong>H\u1ed7 tr\u1ee3 IE v\u00e0 c\u00e1c tr\u00ecnh duy\u1ec7t t\u1eaft JavaScript<\/strong> &#8211; T\u1ea5t c\u1ea3 \u1ea3nh \u0111\u01b0\u1ee3c t\u1ea3i ngay l\u1eadp t\u1ee9c n\u1ebfu tr\u00ecnh duy\u1ec7t l\u00e0 Internet Explorer ho\u1eb7c th\u1eadm ch\u00ed n\u1ebfu JavaScript ho\u00e0n to\u00e0n b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a (s\u1eed d\u1ee5ng th\u1ebb <em>noscript<\/em>).<\/li><\/ul>\n\n\n\n<p>T\u1ea3i plugin \u1edf \u0111\u00e2y: <a href=\"https:\/\/wordpress.org\/plugins\/nazy-load\/\">https:\/\/wordpress.org\/plugins\/nazy-load\/<\/a><\/p>\n\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft: Flying Images \u2013 A High-Performance Lazy Loading Plugin, t\u00e1c gi\u1ea3: Gijo Varghese, website: WPSpeedMatters)<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quan-di\u1ec3m-c\u1ee7a-ng\u01b0\u1eddi-d\u1ecbch-v\u1ec1-plugin-nay\"><span class=\"ez-toc-section\" id=\"Quan_diem_cua_nguoi_dich_ve_plugin_nay\"><\/span>Quan \u0111i\u1ec3m c\u1ee7a ng\u01b0\u1eddi d\u1ecbch v\u1ec1 plugin n\u00e0y<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V\u00ec lazy load \u1ea3nh c\u00f3 nhi\u1ec1u t\u00e1c d\u1ee5ng, trong \u0111\u00f3 ph\u1ea3i k\u1ec3 \u0111\u1ebfn:<\/p>\n\n\n\n<ul><li><a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">T\u0103ng t\u1ed1c \u0111\u1ed9 website \u0111\u00e1ng k\u1ec3<\/a>;<\/li><li>Gi\u1ea3m t\u1ea3i cho m\u00e1y ch\u1ee7 g\u1ed1c nh\u1edd gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi;<\/li><li>Ti\u1ebft ki\u1ec7m ti\u1ec1n n\u1ebfu b\u1ea1n \u0111ang d\u00f9ng CDN (v\u00ec ph\u1ea7n l\u1edbn d\u1ecbch v\u1ee5 CDN t\u00ednh ti\u1ec1n theo dung l\u01b0\u1ee3ng, v\u00e0 \u1ea3nh chi\u1ebfm dung l\u01b0\u1ee3ng \u0111a s\u1ed1).<\/li><\/ul>\n\n\n\n<p>Do v\u1eady v\u1edbi nhi\u1ec1u website ch\u1ec9 c\u1ea7n c\u00f3 m\u1ed9t trong c\u00e1c \u0111\u1eb7c t\u00ednh sau b\u1ea1n n\u00ean c\u00e2n nh\u1eafc tri\u1ec3n khai Flying Images:<\/p>\n\n\n\n<ul><li><strong>Kh\u00f4ng ph\u1ea3i trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/strong> (n\u1ebfu l\u00e0 trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed b\u1ea1n <em>c\u00f3 th\u1ec3<\/em> kh\u00f4ng n\u00ean d\u00f9ng lazy load). Ng\u01b0\u1eddi d\u00f9ng tr\u00ean trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed th\u01b0\u1eddng thi\u1ebfu ki\u00ean nh\u1eabn ch\u1edd \u1ea3nh t\u1ea3i v\u1ec1. <\/li><li><strong>Trang c\u00f3 r\u1ea5t nhi\u1ec1u \u1ea3nh d\u01b0\u1edbi m\u00e0n h\u00ecnh \u0111\u1ea7u ti\u00ean<\/strong>. Tri\u1ec3n khai lazy load s\u1ebd gi\u00fap t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9.<\/li><li><strong>Trang c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn<\/strong> (b\u1ea1n s\u1ebd ti\u1ebft ki\u1ec7m v\u00e0 t\u1ed1i \u01b0u \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u nh\u1edd lazy load). N\u1ebfu b\u1ea1n \u0111\u1ec3 \u00fd h\u1ea7u h\u1ebft c\u00e1c trang b\u00e1o \u0111i\u1ec7n t\u1eed l\u1edbn hi\u1ec7n nay \u0111\u1ec1u tri\u1ec3n khai t\u1ea3i l\u01b0\u1eddi \u1ea3nh.<\/li><li><strong>Ng\u01b0\u1eddi duy\u1ec7t web c\u1ee7a b\u1ea1n d\u00f9ng tr\u00ecnh duy\u1ec7t Chrome nhi\u1ec1u<\/strong> (s\u1eed d\u1ee5ng Google Analytics \u0111\u1ec3 bi\u1ebft ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n \u0111ang d\u00f9ng c\u00e1c tr\u00ecnh duy\u1ec7t n\u00e0o). B\u1ea1n s\u1ebd t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c l\u1ee3i \u00edch r\u1ea5t l\u1edbn t\u1eeb t\u00ednh n\u0103ng native lazy load c\u1ee7a Chrome.<\/li><\/ul>\n\n\n\n<p><strong>L\u01b0u \u00fd cu\u1ed1i c\u00f9ng<\/strong>: Sau khi c\u00e0i \u0111\u1eb7t, b\u1ea1n n\u00ean ki\u1ec3m tra c\u1ea9n th\u1eadn t\u00ednh n\u0103ng t\u1ea3i l\u01b0\u1eddi \u1ea3nh tr\u00ean c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1 l\u1ed7i n\u00e0o x\u1ea3y ra, v\u00ec l\u1ed7i \u1ea3nh s\u1ebd l\u00e0 v\u1ea5n \u0111\u1ec1 r\u1ea5t nghi\u00eam tr\u1ecdng v\u1edbi b\u1ea5t c\u1ee9 website n\u00e0o. Xem <a href=\"https:\/\/kiencang.net\/cai-dat-plugin-flying-images\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c t\u00f9y ch\u1ecdn nhanh trong c\u00e0i \u0111\u1eb7t c\u1ee7a plugin Flying Images<\/a> \u1edf \u0111\u00e2y.<\/p>\n\n\n\n<p>P\/S: gi\u1edd t\u00f4i c\u00f3 c\u00e1i nh\u00ecn kh\u1eaft khe h\u01a1n v\u1edbi lazy load \u1ea3nh, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n l\u00fd do <a href=\"https:\/\/kiencang.net\/lazy-load-anh-khong-hap-dan\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea1i sao t\u1ea3i l\u01b0\u1eddi \u1ea3nh l\u1ea1i kh\u00f4ng h\u1ea5p d\u1eabn nh\u01b0 mong \u0111\u1ee3i<\/a>. Hi\u1ec7n t\u1ea1i t\u00f4i cho r\u1eb1ng ch\u1ec9 c\u00e1c trang c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ef1c l\u1edbn ho\u1eb7c\/v\u00e0 c\u00f3 r\u1ea5t nhi\u1ec1u \u1ea3nh d\u01b0\u1edbi m\u00e0n h\u00ecnh \u0111\u1ea7u ti\u00ean m\u1edbi n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng lazy load \u1ea3nh, khi \u0111\u00f3 l\u1ee3i \u00edch m\u1edbi c\u00f3 ti\u1ec1m n\u0103ng l\u1edbn h\u01a1n \u0111\u00e1ng k\u1ec3 r\u1ee7i ro \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c\u1eadp-nh\u1eadt\"><span class=\"ez-toc-section\" id=\"Cap_Nhat\"><\/span>C\u1eadp Nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/kiencang.net\/plugin-flying-images-cai-tien\/\" target=\"_blank\" rel=\"noreferrer noopener\">Plugin Flying Images m\u1edbi update v\u1edbi m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng th\u00fa v\u1ecb<\/a> m\u00e0 c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 quan t\u00e2m, d\u00f9ng th\u1eed. C\u1ee5 th\u1ec3 n\u00f3 b\u1ed5 sung th\u00eam d\u1ecbch v\u1ee5 CDN mi\u1ec5n ph\u00ed, t\u1ed1i \u01b0u h\u00f3a dung l\u01b0\u1ee3ng \u1ea3nh (v\u1edbi t\u00f9y ch\u1ec9nh ch\u1ea5t l\u01b0\u1ee3ng), t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n \u1ea3nh sang <a href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u1ecbnh d\u1ea1ng .webp<\/a> tr\u00ean tr\u00ecnh duy\u1ec7t th\u00edch h\u1ee3p nh\u01b0 Chrome (gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i \u1ea3nh). N\u00f3i v\u1ec1 CDN, Flying Images \u0111ang s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m mi\u1ec5n ph\u00ed t\u1eeb <a href=\"https:\/\/statically.io\/\" target=\"_blank\" rel=\"noreferrer noopener\">statically.io<\/a>&nbsp;s\u1ea3n ph\u1ea9m n\u00e0y \u0111\u01b0\u1ee3c t\u00e0i tr\u1ee3 b\u1edfi c\u00e1c \u00f4ng l\u1edbn trong l\u0129nh v\u1ef1c CDN (CDN77, BunnyCDN, CloudFlare, Fastly).<\/p>\n\n\n\n<p>\u01afu \u0111i\u1ec3m n\u1eefa l\u00e0 \u1ea3nh c\u00f3 g\u1eafn canonical gi\u00fap CDN kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn SEO. <del>Nh\u01b0ng c\u0169ng c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m, \u1ea3nh webp suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng quan s\u00e1t \u0111\u01b0\u1ee3c b\u1eb1ng m\u1eaft th\u01b0\u1eddng ngay c\u1ea3 khi \u0111\u1ec3 ch\u1ea5t l\u01b0\u1ee3ng 100%, nh\u01b0ng hi\u1ec7n t\u1ea1i th\u00ec plugin ch\u01b0a c\u00f3 t\u00ednh n\u0103ng t\u1eaft \u00e1p d\u1ee5ng webp (tr\u1eeb khi b\u1ea1n t\u1eaft CDN th\u00ec webp c\u0169ng t\u1ef1 t\u1eaft nh\u01b0ng nh\u01b0 th\u1ebf b\u1ea1n kh\u00f4ng t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf c\u1ee7a CDN)<\/del>. Hi\u1ec7n plugin n\u00e0y \u0111\u00e3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng, gi\u1edd n\u1ebfu b\u1ea1n \u0111\u1ec3 100% \u1ea3nh s\u1ebd kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p class=\"has-luminous-vivid-amber-background-color has-background\">M\u1eddi b\u00e0n xem th\u00eam <a href=\"https:\/\/kiencang.net\/cdn-wordpress\/\">b\u00e0i \u0111\u00e1nh gi\u00e1 t\u1ed5ng h\u1ee3p c\u00e1c d\u1ecbch v\u1ee5 CDN ch\u1ea5t l\u01b0\u1ee3ng cho WordPress<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lazy loading ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? M\u1ed9t \u1ea3nh th\u00f4ng th\u01b0\u1eddng trong HTML tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y: &lt;img src=&#8221;speed-family.jpg&#8221; width=&#8221;100%&#8221;\/&gt; C\u00e1c plugin lazy loading s\u1ebd ghi l\u1ea1i \u0111o\u1ea1n m\u00e3 tr\u00ean th\u00e0nh: &lt;img data-src=&#8221;speed-family.jpg&#8221; width=&#8221;100%&#8221;\/&gt; B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ec3 \u00fd th\u1ea5y l\u00e0 thu\u1ed9c t\u00ednh src \u0111\u01b0\u1ee3c thay th\u00e0nh data-src. Khi kh\u00f4ng c\u00f3 src, tr\u00ecnh duy\u1ec7t &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[274],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Gi\u1edbi thi\u1ec7u Flying Images: plugin lazy load \u1ea3nh hi\u1ec7u su\u1ea5t cao &#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\/plugin-flying-images\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gi\u1edbi thi\u1ec7u Flying Images: plugin lazy load \u1ea3nh hi\u1ec7u su\u1ea5t cao &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Lazy loading ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? M\u1ed9t \u1ea3nh th\u00f4ng th\u01b0\u1eddng trong HTML tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y: &lt;img src=&quot;speed-family.jpg&quot; width=&quot;100%&quot;\/&gt; C\u00e1c plugin lazy loading s\u1ebd ghi l\u1ea1i \u0111o\u1ea1n m\u00e3 tr\u00ean th\u00e0nh: &lt;img data-src=&quot;speed-family.jpg&quot; width=&quot;100%&quot;\/&gt; B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ec3 \u00fd th\u1ea5y l\u00e0 thu\u1ed9c t\u00ednh src \u0111\u01b0\u1ee3c thay th\u00e0nh data-src. 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