{"id":4419,"date":"2026-02-27T16:52:24","date_gmt":"2026-02-27T09:52:24","guid":{"rendered":"https:\/\/wpdesign.vn\/image-seo-la-gi-cach-toi-uu-hinh-anh-chuan-seo-tu-a-z\/"},"modified":"2026-05-04T16:50:45","modified_gmt":"2026-05-04T09:50:45","slug":"image-seo-la-gi-cach-toi-uu-hinh-anh-chuan-seo-tu-a-z","status":"publish","type":"post","link":"https:\/\/wpdesign.vn\/vi\/image-seo-la-gi-cach-toi-uu-hinh-anh-chuan-seo-tu-a-z\/","title":{"rendered":"Image SEO l\u00e0 g\u00ec? C\u00e1ch t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh chu\u1ea9n SEO t\u1eeb A\u2013Z"},"content":{"rendered":"\n<p>Trong qu\u00e1 tr\u00ecnh l\u00e0m SEO, nhi\u1ec1u ng\u01b0\u1eddi ch\u1ec9 t\u1eadp trung v\u00e0o n\u1ed9i dung v\u00e0 t\u1eeb kh\u00f3a m\u00e0 qu\u00ean m\u1ea5t m\u1ed9t y\u1ebfu t\u1ed1 c\u1ef1c k\u1ef3 quan tr\u1ecdng: <strong>h\u00ecnh \u1ea3nh<\/strong>. Tr\u00ean th\u1ef1c t\u1ebf, t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 gi\u00fap website t\u0103ng traffic \u0111\u00e1ng k\u1ec3 t\u1eeb t\u00ecm ki\u1ebfm h\u00ecnh \u1ea3nh c\u1ee7a Google. <\/p>\n\n<p>V\u1eady <strong>Image SEO l\u00e0 g\u00ec?<\/strong> V\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh chu\u1ea9n SEO? C\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft trong b\u00e0i vi\u1ebft n\u00e0y. <\/p>\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"500\" src=\"https:\/\/wpdesign.vn\/wp-content\/uploads\/2026\/03\/screencapture-voiceinulsan-co-kr-2026-03-31-07_45_32.webpwp-content\/uploads\/2026\/02\/vai-tro-cua-seo-image-doi-voi-seo-website.jpg\" alt=\"\" class=\"wp-image-712\" srcset=\"https:\/\/wpdesign.vn\/wp-content\/uploads\/2026\/02\/vai-tro-cua-seo-image-doi-voi-seo-website.jpg 1000w, https:\/\/wpdesign.vn\/wp-content\/uploads\/2026\/02\/vai-tro-cua-seo-image-doi-voi-seo-website-420x210.jpg 420w, https:\/\/wpdesign.vn\/wp-content\/uploads\/2026\/02\/vai-tro-cua-seo-image-doi-voi-seo-website-768x384.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">1. Image SEO l\u00e0 g\u00ec?<\/h2>\n\n<p><strong>Image SEO<\/strong> l\u00e0 qu\u00e1 tr\u00ecnh t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh tr\u00ean website \u0111\u1ec3:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Gi\u00fap c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm hi\u1ec3u n\u1ed9i dung c\u1ee7a \u1ea3nh<\/li>\n\n\n\n<li>T\u0103ng kh\u1ea3 n\u0103ng xu\u1ea5t hi\u1ec7n tr\u00ean Google Images<\/li>\n\n\n\n<li>C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang<\/li>\n\n\n\n<li>T\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/li>\n<\/ul>\n\n<p>Khi ng\u01b0\u1eddi d\u00f9ng t\u00ecm ki\u1ebfm tr\u00ean Google Images, nh\u1eefng h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u t\u1ed1t s\u1ebd c\u00f3 c\u01a1 h\u1ed9i xu\u1ea5t hi\u1ec7n v\u00e0 k\u00e9o th\u00eam traffic mi\u1ec5n ph\u00ed v\u1ec1 website.<\/p>\n\n<h2 class=\"wp-block-heading\">2. V\u00ec sao Image SEO quan tr\u1ecdng?<\/h2>\n\n<h3 class=\"wp-block-heading\">2.1. T\u0103ng traffic t\u1eeb Google Images<\/h3>\n\n<p>R\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi t\u00ecm ki\u1ebfm th\u00f4ng qua h\u00ecnh \u1ea3nh, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi trang<\/li>\n\n\n\n<li>N\u1ed9i th\u1ea5t<\/li>\n\n\n\n<li>Thi\u1ebft k\u1ebf<\/li>\n\n\n\n<li>M\u1ef9 ph\u1ea9m<\/li>\n\n\n\n<li>Du l\u1ecbch<\/li>\n<\/ul>\n\n<p>N\u1ebfu t\u1ed1i \u01b0u t\u1ed1t, b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn th\u00eam l\u01b0\u1ee3ng truy c\u1eadp \u0111\u00e1ng k\u1ec3.<\/p>\n\n<h3 class=\"wp-block-heading\">2.2. C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang<\/h3>\n\n<p>H\u00ecnh \u1ea3nh chi\u1ebfm ph\u1ea7n l\u1edbn dung l\u01b0\u1ee3ng c\u1ee7a website. N\u1ebfu kh\u00f4ng t\u1ed1i \u01b0u, trang s\u1ebd t\u1ea3i ch\u1eadm. <\/p>\n\n<p>M\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ea3i trang l\u00e0 y\u1ebfu t\u1ed1 x\u1ebfp h\u1ea1ng c\u1ee7a Google.<\/p>\n\n<h3 class=\"wp-block-heading\">2.3. C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng (UX)<\/h3>\n\n<p>H\u00ecnh \u1ea3nh r\u00f5 n\u00e9t, \u0111\u00fang k\u00edch th\u01b0\u1edbc, t\u1ea3i nhanh \u2192 gi\u1eef ch\u00e2n ng\u01b0\u1eddi d\u00f9ng l\u00e2u h\u01a1n \u2192 gi\u1ea3m bounce rate.<\/p>\n\n<h2 class=\"wp-block-heading\">3. C\u00e1ch t\u1ed1i \u01b0u h\u00ecnh \u1ea3nh chu\u1ea9n SEO<\/h2>\n\n<h3 class=\"wp-block-heading\">3.1. \u0110\u1eb7t t\u00ean file \u1ea3nh ch\u1ee9a t\u1eeb kh\u00f3a<\/h3>\n\n<p>Tr\u01b0\u1edbc khi upload, h\u00e3y \u0111\u1ed5i t\u00ean file \u1ea3nh. <br\/><br\/>V\u00ed d\u1ee5<\/p>\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1eb7t t\u00ean kh\u00f4ng r\u00f5 r\u00e0ng: IMG_1234.jpg<\/li>\n\n\n\n<li>\u0110\u1eb7t t\u00ean r\u00f5 r\u00e0ng: image-seo-la-gi.jpg<\/li>\n<\/ul>\n\n<p>L\u01b0u \u00fd:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Kh\u00f4ng vi\u1ebft ti\u1ebfng Vi\u1ec7t c\u00f3 d\u1ea5u<\/li>\n\n\n\n<li>D\u00f9ng d\u1ea5u g\u1ea1ch ngang (-) thay v\u00ec g\u1ea1ch d\u01b0\u1edbi (_)<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3.2. T\u1ed1i \u01b0u th\u1ebb ALT (Alt Text)<\/h3>\n\n<p>Alt Text gi\u00fap Google hi\u1ec3u n\u1ed9i dung h\u00ecnh \u1ea3nh v\u00e0 h\u1ed7 tr\u1ee3 ng\u01b0\u1eddi khi\u1ebfm th\u1ecb.<\/p>\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n<pre class=\"wp-block-preformatted\"><img decoding=\"async\" src=\"image-seo-la-gi.jpg\" alt=\"Image SEO l&#xE0; g&#xEC; v&#xE0; c&#xE1;ch t&#x1ED1;i &#x1B0;u h&#xEC;nh &#x1EA3;nh\"\/><\/pre>\n\n<p>Nguy\u00ean t\u1eafc:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>M\u00f4 t\u1ea3 t\u1ef1 nhi\u00ean<\/li>\n\n\n\n<li>C\u00f3 ch\u1ee9a t\u1eeb kh\u00f3a ch\u00ednh (kh\u00f4ng nh\u1ed3i nh\u00e9t)<\/li>\n\n\n\n<li>Ng\u1eafn g\u1ecdn, r\u00f5 r\u00e0ng<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3.3. Gi\u1ea3m dung l\u01b0\u1ee3ng \u1ea3nh tr\u01b0\u1edbc khi upload<\/h3>\n\n<p>N\u00ean:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>N\u00e9n \u1ea3nh b\u1eb1ng c\u00f4ng c\u1ee5 tr\u01b0\u1edbc khi t\u1ea3i l\u00ean<\/li>\n\n\n\n<li>Dung l\u01b0\u1ee3ng l\u00fd t\u01b0\u1edfng: d\u01b0\u1edbi 100\u2013200KB (tu\u1ef3 lo\u1ea1i \u1ea3nh)<\/li>\n<\/ul>\n\n<p>N\u1ebfu b\u1ea1n d\u00f9ng WordPress, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng plugin nh\u01b0:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Smush<\/li>\n\n\n\n<li>ShortPixel<\/li>\n\n\n\n<li>Imagify<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3.4. Ch\u1ecdn \u0111\u00fang \u0111\u1ecbnh d\u1ea1ng \u1ea3nh<\/h3>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0110\u1ecbnh d\u1ea1ng<\/th><th>Khi n\u00e0o n\u00ean d\u00f9ng<\/th><\/tr><\/thead><tbody><tr><td>JPG<\/td><td>\u1ea2nh ch\u1ee5p, nhi\u1ec1u m\u00e0u s\u1eafc<\/td><\/tr><tr><td>PNG<\/td><td>\u1ea2nh c\u1ea7n n\u1ec1n trong su\u1ed1t<\/td><\/tr><tr><td>WebP<\/td><td>T\u1ed1i \u01b0u dung l\u01b0\u1ee3ng, ch\u1ea5t l\u01b0\u1ee3ng cao<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p>Hi\u1ec7n nay, WebP \u0111\u01b0\u1ee3c Google khuy\u1ebfn kh\u00edch v\u00ec nh\u1eb9 h\u01a1n JPG\/PNG nh\u01b0ng v\u1eabn gi\u1eef ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t.<\/p>\n\n<h3 class=\"wp-block-heading\">3.5. T\u1ed1i \u01b0u k\u00edch th\u01b0\u1edbc hi\u1ec3n th\u1ecb<\/h3>\n\n<p>Kh\u00f4ng n\u00ean upload \u1ea3nh k\u00edch th\u01b0\u1edbc qu\u00e1 l\u1edbn r\u1ed3i thu nh\u1ecf b\u1eb1ng CSS.<\/p>\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>\u1ea2nh hi\u1ec3n th\u1ecb 800px \u2192 kh\u00f4ng n\u00ean upload \u1ea3nh 4000px.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3.6. S\u1eed d\u1ee5ng Lazy Loading<\/h3>\n\n<p>Lazy Loading gi\u00fap \u1ea3nh ch\u1ec9 t\u1ea3i khi ng\u01b0\u1eddi d\u00f9ng cu\u1ed9n \u0111\u1ebfn.<\/p>\n\n<p>\u0110i\u1ec1u n\u00e0y:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Gi\u1ea3m th\u1eddi gian t\u1ea3i ban \u0111\u1ea7u<\/li>\n\n\n\n<li>C\u1ea3i thi\u1ec7n \u0111i\u1ec3m PageSpeed<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3.7. Th\u00eam Sitemap h\u00ecnh \u1ea3nh<\/h3>\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o Image Sitemap \u0111\u1ec3 Google index \u1ea3nh t\u1ed1t h\u01a1n.<\/p>\n\n<p>N\u1ebfu d\u00f9ng plugin SEO nh\u01b0:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Yoast SEO<\/li>\n\n\n\n<li>Rank Math<\/li>\n<\/ul>\n\n<p>H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u1ea1o sitemap cho b\u1ea1n.<\/p>\n\n<h2 class=\"wp-block-heading\">4. Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi l\u00e0m Image SEO<\/h2>\n\n<p>+ Kh\u00f4ng \u0111\u1eb7t Alt Text<br\/>+ \u1ea2nh qu\u00e1 n\u1eb7ng (2\u20135MB)<br\/>+ \u0110\u1eb7t t\u00ean file v\u00f4 ngh\u0129a<br\/>+ Copy \u1ea3nh t\u1eeb website kh\u00e1c<br\/>+ Kh\u00f4ng t\u1ed1i \u01b0u k\u00edch th\u01b0\u1edbc<\/p>\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn<\/h2>\n\n<p>Image SEO kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng traffic t\u1eeb Google Images m\u00e0 c\u00f2n:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang<\/li>\n\n\n\n<li>T\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/li>\n\n\n\n<li>H\u1ed7 tr\u1ee3 SEO t\u1ed5ng th\u1ec3 hi\u1ec7u qu\u1ea3 h\u01a1n<\/li>\n<\/ul>\n\n<p>N\u1ebfu b\u1ea1n \u0111ang l\u00e0m SEO cho website, \u0111\u1eebng b\u1ecf qua h\u00ecnh \u1ea3nh. Ch\u1ec9 c\u1ea7n t\u1ed1i \u01b0u \u0111\u00fang c\u00e1ch, b\u1ea1n c\u00f3 th\u1ec3 khai th\u00e1c th\u00eam m\u1ed9t ngu\u1ed3n traffic ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong qu\u00e1 tr\u00ecnh l\u00e0m SEO, nhi\u1ec1u ng\u01b0\u1eddi ch\u1ec9 t\u1eadp trung v\u00e0o n\u1ed9i dung v\u00e0 t\u1eeb kh\u00f3a m\u00e0 qu\u00ean m\u1ea5t m\u1ed9t [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4418,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[27],"tags":[],"class_list":["post-4419","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/posts\/4419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/comments?post=4419"}],"version-history":[{"count":1,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/posts\/4419\/revisions"}],"predecessor-version":[{"id":4420,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/posts\/4419\/revisions\/4420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/media\/4418"}],"wp:attachment":[{"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/media?parent=4419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/categories?post=4419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpdesign.vn\/vi\/wp-json\/wp\/v2\/tags?post=4419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}