{"id":21991,"date":"2017-06-14T15:29:40","date_gmt":"2017-06-14T15:29:40","guid":{"rendered":"http:\/\/www.ducanhplus.com\/?p=5007"},"modified":"2017-06-14T15:29:40","modified_gmt":"2017-06-14T15:29:40","slug":"dinh-dang-anh-webp","status":"publish","type":"post","link":"https:\/\/kiencang.net\/dinh-dang-anh-webp\/","title":{"rendered":"\u1ea2nh WebP l\u00e0 g\u00ec? C\u00f9ng t\u00ecm hi\u1ec3u \u0111\u1ecbnh d\u1ea1ng \u1ea3nh gi\u00fap t\u0103ng t\u1ed1c website"},"content":{"rendered":"\n<p>Ch\u00e0o c\u00e1c b\u1ea1n, c\u00e1 nh\u00e2n t\u00f4i v\u1edbi mong mu\u1ed1n \u0111i s\u00e2u v\u00e0o vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 website, m\u00e0 c\u1ee5 th\u1ec3 \u1edf \u0111\u00e2y t\u00f4i mu\u1ed1n <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u0103ng t\u1ed1c cho WordPress<\/a>, n\u00ean d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u00ecm hi\u1ec3u \u0111\u1ecbnh d\u1ea1ng \u1ea3nh m\u1edbi WebP n\u00e0y. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng thay th\u1ebf cho <a href=\"https:\/\/kiencang.net\/gif-png-jpg-hoac-svg\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ea3nh JPG v\u00e0 PNG<\/a>, c\u0169ng nh\u01b0 m\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng ph\u1ed5 th\u00f4ng kh\u00e1c.<\/p>\n\n\n<p>Video gi\u1edbi thi\u1ec7u:<\/p>\n\n\n<iframe loading=\"lazy\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/L1Tl8PhAqPo\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<p>WebP l\u00e0 <strong>\u0111\u1ecbnh d\u1ea1ng \u1ea3nh<\/strong> hi\u1ec7n \u0111\u1ea1i cung c\u1ea5p kh\u1ea3 n\u0103ng n\u00e9n r\u1ea5t cao cho c\u1ea3 <strong><a href=\"https:\/\/kiencang.net\/cac-ky-thuat-nen-anh-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">ki\u1ec3u n\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u v\u00e0 m\u1ea5t d\u1eef li\u1ec7u<\/a>&nbsp;<\/strong>(<em>lossless and lossy<\/em>)<strong>&nbsp;<\/strong>tr\u00ean web. S\u1eed d\u1ee5ng WebP, ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb v\u00e0 ph\u00e1t tri\u1ec3n web c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c b\u1ee9c \u1ea3nh c\u00f3 dung l\u01b0\u1ee3ng nh\u1ecf h\u01a1n, phong ph\u00fa h\u01a1n v\u00e0 gi\u00fap web t\u1ea3i nhanh h\u01a1n.<\/p>\n\n\n<p>Ki\u1ec3u n\u00e9n \u1ea3nh kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a <a href=\"https:\/\/kiencang.net\/png-va-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">WebP c\u00f3 k\u00edch c\u1ee1 nh\u1ecf h\u01a1n 26% so v\u1edbi \u1ea3nh PNGs<\/a>. Ki\u1ec3u <a href=\"https:\/\/kiencang.net\/nen-mat-du-lieu-jpg-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">n\u00e9n \u1ea3nh m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a WebP nh\u1ecf h\u01a1n t\u1eeb 25 &#8211; 34% so v\u1edbi \u1ea3nh JPEG<\/a> v\u1edbi ch\u1ec9 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng <a href=\"https:\/\/en.wikipedia.org\/wiki\/Structural_similarity\" target=\"_blank\" rel=\"noreferrer noopener\">SSIM<\/a> t\u01b0\u01a1ng \u0111\u01b0\u01a1ng (<em>equivalent<\/em>).<\/p>\n\n\n<p>Ki\u1ec3u n\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a WebP <strong>h\u1ed7 tr\u1ee3 thu\u1ed9c t\u00ednh trong su\u1ed1t<\/strong> (c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean k\u00eanh alpha) v\u1edbi vi\u1ec7c ch\u1ec9 ph\u1ea3i <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/webp_lossless_alpha_study#results\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1ed5 sung th\u00eam 22% bytes<\/a>. V\u1edbi c\u00e1c tr\u01b0\u1eddng h\u1ee3p khi n\u00e9n m\u1ea5t d\u1eef li\u1ec7u RGB \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn, <strong>ki\u1ec3u n\u00e9n m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a WebP c\u0169ng h\u1ed7 tr\u1ee3 thu\u1ed9c t\u00ednh trong su\u1ed1t<\/strong>, th\u01b0\u1eddng cho k\u00edch c\u1ee1 file nh\u1ecf h\u01a1n 3 l\u1ea7n so v\u1edbi PNG.<\/p>\n\n\n<p>M\u1ee9c \u0111\u1ed9 ch\u1ea5p nh\u1eadn n\u00e9n m\u1ea5t d\u1eef li\u1ec7u <em>\u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c<\/em> v\u00ec v\u1eady ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 ch\u1ecdn l\u1ef1a <em>\u0111\u00e1nh \u0111\u1ed5i<\/em> gi\u1eefa dung l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh theo mong mu\u1ed1n c\u1ee7a h\u1ecd.<\/p>\n\n\n<p>WebP th\u01b0\u1eddng c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef- t\u00ednh theo trung b\u00ecnh- v\u1edbi kh\u1ea3 n\u0103ng n\u00e9n hi\u1ec7u qu\u1ea3 h\u01a1n <strong>30%<\/strong> so v\u1edbi JPEG v\u00e0 JPEG 2000, m\u00e0 <strong>kh\u00f4ng b\u1ecb m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh<\/strong>.<\/p>\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-6577d6330f26d\" ><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\" 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class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/#Cac_trinh_duyet_web_phan_mem_nao_ho_tro_dinh_dang_anh_WebP\" title=\"C\u00e1c tr\u00ecnh duy\u1ec7t web, ph\u1ea7n m\u1ec1m n\u00e0o h\u1ed7 tr\u1ee3 \u0111\u1ecbnh d\u1ea1ng \u1ea3nh WebP?\">C\u00e1c tr\u00ecnh duy\u1ec7t web, ph\u1ea7n m\u1ec1m n\u00e0o h\u1ed7 tr\u1ee3 \u0111\u1ecbnh d\u1ea1ng \u1ea3nh WebP?<\/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\/dinh-dang-anh-webp\/#Tai_chuong_trinh_chuyen_doi_sang_dinh_dang_WebP\" title=\"T\u1ea3i ch\u01b0\u01a1ng tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng WebP\">T\u1ea3i ch\u01b0\u01a1ng tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng WebP<\/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\/dinh-dang-anh-webp\/#Toi_co_the_tu_danh_gia_chat_luong_anh_WebP_duoc_khong\" title=\"T\u00f4i c\u00f3 th\u1ec3 t\u1ef1 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh WebP \u0111\u01b0\u1ee3c kh\u00f4ng?\">T\u00f4i c\u00f3 th\u1ec3 t\u1ef1 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh WebP \u0111\u01b0\u1ee3c kh\u00f4ng?<\/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\/dinh-dang-anh-webp\/#Kich_co_anh_WebP_lon_nhat_co_the_duoc_ho_tro\" title=\"K\u00edch c\u1ee1 \u1ea3nh WebP l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3?\">K\u00edch c\u1ee1 \u1ea3nh WebP l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3?<\/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\/dinh-dang-anh-webp\/#Lieu_anh_WebP_co_the_co_kich_co_lon_hon_anh_nguon_khong\" title=\"Li\u1ec7u \u1ea3nh WebP c\u00f3 th\u1ec3 c\u00f3 k\u00edch c\u1ee1 l\u1edbn h\u01a1n \u1ea3nh ngu\u1ed3n kh\u00f4ng?\">Li\u1ec7u \u1ea3nh WebP c\u00f3 th\u1ec3 c\u00f3 k\u00edch c\u1ee1 l\u1edbn h\u01a1n \u1ea3nh ngu\u1ed3n kh\u00f4ng?<\/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\/dinh-dang-anh-webp\/#Lam_sao_toi_biet_duoc_trinh_duyet_nao_ho_tro_WebP\" title=\"L\u00e0m sao t\u00f4i bi\u1ebft \u0111\u01b0\u1ee3c tr\u00ecnh duy\u1ec7t n\u00e0o h\u1ed7 tr\u1ee3 WebP?\">L\u00e0m sao t\u00f4i bi\u1ebft \u0111\u01b0\u1ee3c tr\u00ecnh duy\u1ec7t n\u00e0o h\u1ed7 tr\u1ee3 WebP?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/#Tai_sao_Google_lai_phat_hanh_WebP_duoi_dang_nguon_mo\" title=\"T\u1ea1i sao Google l\u1ea1i ph\u00e1t h\u00e0nh WebP d\u01b0\u1edbi d\u1ea1ng ngu\u1ed3n m\u1edf?\">T\u1ea1i sao Google l\u1ea1i ph\u00e1t h\u00e0nh WebP d\u01b0\u1edbi d\u1ea1ng ngu\u1ed3n m\u1edf?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/#Nhan_xet_cua_nguoi_dich\" title=\"Nh\u1eadn x\u00e9t c\u1ee7a ng\u01b0\u1eddi d\u1ecbch\">Nh\u1eadn x\u00e9t c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cach_WebP_lam_viec\"><\/span>C\u00e1ch WebP l\u00e0m vi\u1ec7c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>N\u00e9n m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a WebP s\u1eed d\u1ee5ng m\u00e3 h\u00f3a d\u1ef1 \u0111o\u00e1n (<em>predictive coding<\/em>) \u0111\u1ec3 m\u00e3 h\u00f3a \u1ea3nh, c\u00f9ng m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c t\u1eebng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi m\u00e3 video VP8 \u0111\u1ec3 n\u00e9n c\u00e1c khung h\u00ecnh (<em>keyframes<\/em>) trong video. M\u00e3 h\u00f3a d\u1ef1 \u0111o\u00e1n s\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c kh\u1ed1i pixels ngay b\u00ean c\u1ea1nh (<em>neighboring blocks of pixels<\/em>) \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n gi\u00e1 tr\u1ecb trong m\u1ed9t kh\u1ed1i, r\u1ed3i sau \u0111\u00f3 ch\u1ec9 m\u00e3 h\u00f3a s\u1ef1 kh\u00e1c bi\u1ec7t.<\/p>\n\n\n<p>N\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a WebP s\u1eed d\u1ee5ng c\u00e1c m\u1ea3nh h\u00ecnh \u1ea3nh \u0111\u00e3 th\u1ea5y theo th\u1ee9 t\u1ef1 \u0111\u1ec3 t\u00e1i t\u1ea1o ch\u00ednh x\u00e1c c\u00e1c pixel m\u1edbi. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3ng m\u00e0u c\u1ee5c b\u1ed9 n\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y s\u1ef1 ph\u00f9 h\u1ee3p \u0111\u1ee7.<\/p>\n\n\n<p>M\u1ed9t t\u1ec7p WebP bao g\u1ed3m c\u1ea3 d\u1eef li\u1ec7u \u1ea3nh <a href=\"http:\/\/datatracker.ietf.org\/doc\/rfc6386\/\" target=\"_blank\" rel=\"noreferrer noopener\">VP8<\/a> ho\u1eb7c <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/webp_lossless_bitstream_specification\" target=\"_blank\" rel=\"noreferrer noopener\">VP8L<\/a>, v\u00e0 m\u1ed9t khung ch\u1ee9a d\u1ef1a tr\u00ean <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/riff_container\" target=\"_blank\" rel=\"noreferrer noopener\">RIFF<\/a>. Th\u01b0 vi\u1ec7n \u0111\u1ed9c l\u1eadp libwebp \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t tham chi\u1ebfu \u0111\u1ea7y \u0111\u1ee7 (<em>serves as a reference implementation<\/em>) cho c\u00e1c \u0111\u1eb7c t\u1ea3 WebP, v\u00e0 c\u00f3 s\u1eb5n t\u1eeb <a href=\"http:\/\/www.webmproject.org\/code\/#libwebp-webp-image-library\" target=\"_blank\" rel=\"noreferrer noopener\">kho git c\u1ee7a ch\u00fang t\u00f4i<\/a> ho\u1eb7c nh\u01b0 m\u1ed9t <a href=\"https:\/\/developers.google.com\/speed\/webp\/download\" target=\"_blank\" rel=\"noreferrer noopener\">tarball<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_trinh_duyet_web_phan_mem_nao_ho_tro_dinh_dang_anh_WebP\"><\/span>C\u00e1c tr\u00ecnh duy\u1ec7t web, ph\u1ea7n m\u1ec1m n\u00e0o h\u1ed7 tr\u1ee3 \u0111\u1ecbnh d\u1ea1ng \u1ea3nh WebP?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web mong mu\u1ed1n n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a trang c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u1ea1o c\u00e1c \u1ea3nh WebP \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u \u0111\u1ec3 thay th\u1ebf cho c\u00e1c \u1ea3nh hi\u1ec7n t\u1ea1i v\u00e0 hi\u1ec3n th\u1ecb n\u00f3 cho nh\u1eefng m\u1ee5c ti\u00eau c\u01a1 b\u1ea3n t\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3 WebP.<\/p>\n\n\n<p>Hi\u1ec7n t\u1ea1i ch\u1ec9 c\u00f3 2 tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3 WebP l\u00e0 Google Chrome (b\u1ea3n desktop v\u00e0 mobile) v\u00e0 Opera. 3 tr\u00ecnh duy\u1ec7t ph\u1ed5 bi\u1ebfn c\u00f2n l\u1ea1i l\u00e0 IE, FireFox &amp; Safari ch\u01b0a h\u1ed7 tr\u1ee3. (C\u1eadp nh\u1eadt n\u0103m 2021: hi\u1ec7n Firefox v\u00e0 Edge Microsoft \u0111\u1ec1u \u0111\u00e3 h\u1ed7 tr\u1ee3 WebP, nh\u01b0 v\u1eady <a href=\"https:\/\/caniuse.com\/webp\" target=\"_blank\" rel=\"noreferrer noopener\">h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t l\u1edbn, nh\u1ecf \u0111\u1ec1u \u0111\u00e3 h\u1ed7 tr\u1ee3 WebP, ch\u1ec9 ri\u00eang Safari l\u00e0 ch\u01b0a h\u1ed7 tr\u1ee3<\/a>.)<\/p>\n\n\n<ul><li>H\u1ed7 tr\u1ee3 ki\u1ec3u n\u00e9n m\u1ea5t d\u1eef li\u1ec7u WebP\n<ul>\n<li>Google Chrome (desktop) 17+<\/li>\n<li>Google Chrome cho Android phi\u00ean b\u1ea3n 25+<\/li>\n<li>Opera 11.10+<\/li>\n<li>Native web browser, Android 4.0+ (ICS)<\/li>\n<\/ul>\n<\/li><li>H\u1ed7 tr\u1ee3 ki\u1ec3u n\u00e9n m\u1ea5t d\u1eef li\u1ec7u v\u00e0 kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u WebP &amp; h\u1ed7 tr\u1ee3 k\u00eanh alpha\n<ul>\n<li>Google Chrome (desktop) 23+<\/li>\n<li>Google Chrome cho Android phi\u00ean b\u1ea3n 25+<\/li>\n<li>Opera 12.10+<\/li>\n<li>Native web browser, Android 4.2+ (JB-MR1)<\/li>\n<li>Pale Moon 26+<\/li>\n<\/ul>\n<\/li><li>H\u1ed7 tr\u1ee3 \u1ea3nh \u0111\u1ed9ng WebP\n<ul>\n<li>Google Chrome (desktop v\u00e0 Android) 32+<\/li>\n<li>Opera 19+<\/li>\n<\/ul>\n<\/li><\/ul>\n\n\n<p>Nhi\u1ec1u c\u00f4ng c\u1ee5 v\u00e0 th\u01b0 vi\u1ec7n ph\u1ea7n m\u1ec1m hi\u1ec7n c\u0169ng \u0111\u00e3 h\u1ed7 tr\u1ee3 WebP. Nh\u00e0 ph\u00e1t tri\u1ec3n c\u0169ng nh\u1eadn \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 th\u00eam t\u1eeb r\u1ea5t nhi\u1ec1u c\u00f4ng c\u1ee5 ch\u1ec9nh s\u1eeda \u1ea3nh.<\/p>\n\n\n<p>WebP bao g\u1ed3m th\u01b0 vi\u1ec7n m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 nh\u1eb9 <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/api\" target=\"_blank\" rel=\"noreferrer noopener\">libwebp<\/a>&nbsp;v\u00e0 c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/cwebp\" target=\"_blank\" rel=\"noreferrer noopener\">cwebp<\/a> v\u00e0 <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/dwebp\" target=\"_blank\" rel=\"noreferrer noopener\">dwebp<\/a> cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u1ea3nh th\u00f4ng th\u01b0\u1eddng sang WebP v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c c\u00f4ng c\u1ee5 n\u00e0y n\u1ebfu d\u00f9ng \u0111\u1ec3 xem v\u00e0 t\u1ea1o \u1ea3nh \u0111\u1ed9ng WebP c\u0169ng r\u1ea5t t\u1ed1t. M\u00e3 ngu\u1ed3n \u0111\u1ea7y \u0111\u1ee7 \u0111\u01b0\u1ee3c cung c\u1ea5p \u1edf trang <a href=\"https:\/\/developers.google.com\/speed\/webp\/download\" target=\"_blank\" rel=\"noreferrer noopener\">download n\u00e0y<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tai_chuong_trinh_chuyen_doi_sang_dinh_dang_WebP\"><\/span>T\u1ea3i ch\u01b0\u01a1ng tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng WebP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Chuy\u1ec3n \u0111\u1ed5i b\u1ed9 s\u01b0u t\u1eadp \u1ea3nh \u01b0a th\u00edch c\u1ee7a b\u1ea1n t\u1eeb PNG v\u00e0 JPEG sang WebP b\u1eb1ng c\u00e1ch t\u1ea3i v\u1ec1 tr\u00ecnh ti\u1ec1n bi\u00ean d\u1ecbch cwebp, c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i h\u1ed7 tr\u1ee3 cho <a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/precompiled\" target=\"_blank\" rel=\"noreferrer noopener\">Linux, Windows ho\u1eb7c Mac OS X<\/a>.<\/p>\n\n\n<p>Cho ch\u00fang t\u00f4i bi\u1ebft tr\u1ea3i nghi\u1ec7m c\u1ee7a b\u1ea1n v\u1ec1 d\u1ef1 \u00e1n n\u00e0y \u1edf \u0111\u00e2y: <a href=\"https:\/\/groups.google.com\/a\/webmproject.org\/group\/webp-discuss\" target=\"_blank\" rel=\"noreferrer noopener\">mailing list<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toi_co_the_tu_danh_gia_chat_luong_anh_WebP_duoc_khong\"><\/span>T\u00f4i c\u00f3 th\u1ec3 t\u1ef1 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh WebP \u0111\u01b0\u1ee3c kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Hi\u1ec7n t\u1ea1i b\u1ea1n c\u00f3 th\u1ec3 xem \u1ea3nh \u0111\u1ecbnh d\u1ea1ng WebP b\u1eb1ng c\u00e1ch chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u1ecbnh d\u1ea1ng ph\u1ed5 bi\u1ebfn b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng n\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u, th\u00ed d\u1ee5 nh\u01b0 PNG r\u1ed3i sau \u0111\u00f3 xem \u1ea3nh PNG n\u00e0y tr\u00ean b\u1ea5t c\u1ee9 tr\u00ecnh duy\u1ec7t ho\u1eb7c ph\u1ea7n m\u1ec1m xem \u1ea3nh n\u00e0o.<\/p>\n\n\n<p>\u0110\u1ec3 nhanh ch\u00f3ng c\u00f3 \u0111\u01b0\u1ee3c \u00fd t\u01b0\u1edfng v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a WebP, h\u00e3y xem c\u00e1c \u1ea3nh so s\u00e1nh c\u1ee7a ch\u00fang t\u00f4i ngay d\u01b0\u1edbi \u0111\u00e2y. C\u00f3 c\u1ea3 PNG v\u00e0 JPG \u0111\u1ec3 b\u1ea1n so s\u00e1nh.<\/p>\n\n\n<p>Nh\u1edb xem n\u00f3 b\u1eb1ng Google Chrome ho\u1eb7c Opera (n\u1ebfu b\u1ea1n th\u00edch so s\u00e1nh chi ti\u1ebft h\u01a1n, click v\u00e0o h\u00ecnh, chu\u1ed9t ph\u1ea3i m\u1edf sang tab m\u1edbi \u0111\u1ec3 ti\u1ec7n quan s\u00e1t c\u1ea3 hai).<\/p>\n\n\n<p><strong>\u0110\u1ea7u ti\u00ean l\u00e0 v\u1edbi PNG:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_png-1.png\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_png-1.png\" alt=\"PNG file size: 40.5 KB\"\/><\/a><figcaption>PNG file size: 40.5 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_ll_png_webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_ll_png_webp.webp\" alt=\"WebP-lossless file size: 27.0 KB\"\/><\/a><figcaption>WebP-lossless file size: 27.0 KB &#8211; n\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_l_png_webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2_l_png_webp.webp\" alt=\"WebP-lossy (with alpha) file size: 14.1 KB\"\/><\/a><figcaption>WebP-lossy (with alpha) file size: 14.1 KB &#8211; n\u00e9n m\u1ea5t d\u1eef li\u1ec7u<\/figcaption><\/figure><\/div>\n\n\n<p><strong>Ti\u1ebfp \u0111\u1ebfn l\u00e0 JPEG:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/1-jpeg-1.jpg\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/1-jpeg-1.jpg\" alt=\"JPEG file size: 43.84 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>JPEG file size: 43.84 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/1-webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/1-webp.webp\" alt=\"WebP file size: 29.61 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>WebP file size: 29.61 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2-jpeg-1.jpg\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2-jpeg-1.jpg\" alt=\"JPEG file size: 86.25 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>JPEG file size: 86.25 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2-webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/2-webp.webp\" alt=\"WebP file size: 59.18 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>WebP file size: 59.18 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/4-jpeg-1.jpg\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/4-jpeg-1.jpg\" alt=\"JPEG file size: 251.03 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>JPEG file size: 251.03 KB<\/figcaption><\/figure><\/div>\n\n\n<figure class=\"wp-block-image alignnone\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/4-webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/4-webp.webp\" alt=\"WebP file size: 172.82 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>WebP file size: 172.82 KB<\/figcaption><\/figure>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/5-jpeg-1.jpg\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/5-jpeg-1.jpg\" alt=\"JPEG file size: 120.78 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>JPEG file size: 120.78 KB<\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/5-webp.webp\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2017\/06\/5-webp.webp\" alt=\"WebP file size: 80.76 KB\" class=\"wp-image-5002\"\/><\/a><figcaption>WebP file size: 80.76 KB<\/figcaption><\/figure><\/div>\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y \u1ea3nh \u0111\u1ecbnh d\u1ea1ng WebP c\u00f3 <strong>dung l\u01b0\u1ee3ng nh\u1ecf h\u01a1n 30%<\/strong> so v\u1edbi \u1ea3nh JPEG.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Kich_co_anh_WebP_lon_nhat_co_the_duoc_ho_tro\"><\/span>K\u00edch c\u1ee1 \u1ea3nh WebP l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>WebP t\u01b0\u01a1ng th\u00edch bitstream v\u1edbi VP8 v\u00e0 s\u1eed d\u1ee5ng 14bit cho chi\u1ec1u r\u1ed9ng v\u00e0 chi\u1ec1u cao. \u0110\u1ed9 ph\u00e2n gi\u1ea3i l\u1edbn nh\u1ea5t c\u1ee7a \u1ea3nh WebP t\u00ednh theo pixel l\u00e0 16383 x 16383.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lieu_anh_WebP_co_the_co_kich_co_lon_hon_anh_nguon_khong\"><\/span>Li\u1ec7u \u1ea3nh WebP c\u00f3 th\u1ec3 c\u00f3 k\u00edch c\u1ee1 l\u1edbn h\u01a1n \u1ea3nh ngu\u1ed3n kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p><strong>C\u00f3<\/strong>, th\u01b0\u1eddng x\u1ea3y ra khi chuy\u1ec3n \u0111\u1ed5i t\u1eeb \u0111\u1ecbnh d\u1ea1ng \u1ea3nh n\u00e9n m\u1ea5t d\u1eef li\u1ec7u sang WebP kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i (<em>vice versa<\/em>). \u0110i\u1ec1u n\u00e0y c\u00f3 nguy\u00ean nh\u00e2n ch\u1ee7 y\u1ebfu t\u1eeb s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 kh\u00f4ng gian m\u00e0u s\u1eafc \/ <em>colorspace<\/em> (YUV420 &amp; ARGB) v\u00e0 vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa ch\u00fang.<\/p>\n\n\n<p>\u0110\u00e2y l\u00e0 ba t\u00ecnh hu\u1ed1ng th\u01b0\u1eddng g\u1eb7p:<\/p>\n\n\n<ol><li>N\u1ebfu \u1ea3nh ngu\u1ed3n c\u00f3 \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u l\u00e0 ARGB, vi\u1ec7c l\u1ea5y m\u1eabu xu\u1ed1ng kh\u00f4ng gian (<em>spatial downsampling<\/em>) d\u1ea1ng YUV420 s\u1ebd t\u1ea1o ra c\u00e1c m\u00e0u m\u1edbi kh\u00f3 n\u00e9n h\u01a1n nguy\u00ean b\u1ea3n. T\u00ecnh hu\u1ed1ng n\u00e0y c\u00f3 th\u1ec3 th\u01b0\u1eddng x\u1ea3y ra khi file ngu\u1ed3n l\u00e0 \u0111\u1ecbnh d\u1ea1ng PNG c\u00f3 v\u00e0i m\u00e0u s\u1eafc: chuy\u1ec3n sang \u0111\u1ecbnh d\u1ea1ng m\u1ea5t d\u1eef li\u1ec7u WebP (ho\u1eb7c, t\u01b0\u01a1ng t\u1ef1 sang \u0111\u1ecbnh d\u1ea1ng m\u1ea5t d\u1eef li\u1ec7u JPEG) s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng cho file \u1ea3nh c\u00f3 dung l\u01b0\u1ee3ng l\u1edbn h\u01a1n.<\/li><li>N\u1ebfu \u0111\u1ecbnh d\u1ea1ng ngu\u1ed3n l\u00e0 m\u1ea5t d\u1eef li\u1ec7u, s\u1eed d\u1ee5ng n\u00e9n kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u th\u01b0\u1eddng cho k\u1ebft qu\u1ea3 l\u00e0 file c\u00f3 dung l\u01b0\u1ee3ng l\u1edbn h\u01a1n. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra kh\u00f4ng ri\u00eang g\u00ec v\u1edbi WebP, v\u00e0 c\u00f3 th\u1ec3 x\u1ea3y ra khi chuy\u1ec3n file ngu\u1ed3n JPEG sang \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u WebP ho\u1eb7c PNG.<\/li><li>N\u1ebfu file ngu\u1ed3n l\u00e0 \u0111\u1ecbnh d\u1ea1ng m\u1ea5t d\u1eef li\u1ec7u v\u00e0 b\u1ea1n c\u1ed1 g\u1eafng n\u00e9n n\u00f3 sang d\u1ea1ng m\u1ea5t d\u1eef li\u1ec7u WebP v\u1edbi thi\u1ebft l\u1eadp ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n. L\u1ea5y th\u00ed d\u1ee5, b\u1ea1n c\u1ed1 g\u1eafng chuy\u1ec3n file JPEG c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng 80 sang d\u1ea1ng WebP c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng 95 th\u01b0\u1eddng s\u1ebd cho k\u1ebft qu\u1ea3 l\u00e0 dung l\u01b0\u1ee3ng file l\u1edbn h\u01a1n, th\u1eadm ch\u00ed n\u1ebfu c\u1ea3 hai \u0111\u1ecbnh d\u1ea1ng \u0111\u1ec1u l\u00e0 m\u1ea5t d\u1eef li\u1ec7u. \u0110\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh ngu\u1ed3n th\u01b0\u1eddng c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n, v\u00ec v\u1eady l\u1eddi khuy\u00ean l\u00e0 n\u00ean h\u1ea1 th\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ecbnh d\u1ea1ng WebP \u0111\u00edch n\u1ebfu k\u00edch c\u1ee1 file k\u1ebft qu\u1ea3 th\u01b0\u1eddng l\u1edbn h\u01a1n. M\u1ed9t kh\u1ea3 n\u0103ng kh\u00e1c l\u00e0 tr\u00e1nh s\u1eed d\u1ee5ng thi\u1ebft l\u1eadp ch\u1ea5t l\u01b0\u1ee3ng, v\u00e0 thay v\u00e0o \u0111\u00f3 nh\u1eafm m\u1ee5c ti\u00eau k\u00edch th\u01b0\u1edbc t\u1ec7p nh\u1ea5t \u0111\u1ecbnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u00f9y ch\u1ecdn <strong>-size<\/strong> trong c\u00f4ng c\u1ee5 <strong>cwebp<\/strong>, ho\u1eb7c API t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. V\u00ed d\u1ee5, h\u01b0\u1edbng \u0111\u1ebfn 80% ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a file g\u1ed1c c\u00f3 th\u1ec3 s\u1ebd t\u1ed1t h\u01a1n.<\/li><\/ol>\n\n\n<p>L\u01b0u \u00fd l\u00e0 khi chuy\u1ec3n \u0111\u1ed5i <em>file ngu\u1ed3n JPEG sang \u0111\u1ecbnh d\u1ea1ng m\u1ea5t d\u1eef li\u1ec7u WebP<\/em> ho\u1eb7c m\u1ed9t <em>file ngu\u1ed3n PNG sang \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u WebP<\/em> th\u01b0\u1eddng kh\u00f4ng hay b\u1ecb t\u0103ng k\u00edch c\u1ee1 file b\u1ea5t ng\u1edd ki\u1ec3u nh\u01b0 tr\u00ean.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lam_sao_toi_biet_duoc_trinh_duyet_nao_ho_tro_WebP\"><\/span>L\u00e0m sao t\u00f4i bi\u1ebft \u0111\u01b0\u1ee3c tr\u00ecnh duy\u1ec7t n\u00e0o h\u1ed7 tr\u1ee3 WebP?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>B\u1ea1n mu\u1ed1n hi\u1ec3n th\u1ecb \u1ea3nh WebP ch\u1ec9 cho ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb ch\u00fang m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, v\u00e0 tr\u1edf l\u1ea1i c\u00e1c \u0111\u1ecbnh d\u1ea1ng truy\u1ec1n th\u1ed1ng khi tr\u00ecnh duy\u1ec7t ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. Th\u1eadt may m\u1eafn l\u00e0 ch\u00fang ta c\u00f3 m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt gi\u00fap nh\u1eadn bi\u1ebft kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 WebP, c\u1ea3 ph\u00eda m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y kh\u00e1ch. M\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 CDN c\u0169ng h\u1ed7 tr\u1ee3 WebP.<\/p>\n\n\n<p>N\u1ebfu b\u1ea1n d\u00f9ng WordPress, t\u00f4i c\u00f3 m\u1ed9t CaseStudy \u0111i\u1ec3n h\u00ecnh cho vi\u1ec7c n\u00e0y: <a href=\"https:\/\/kiencang.net\/chuyen-anh-tren-wordpress-sang-dinh-dang-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">Chuy\u1ec3n th\u00e0nh c\u00f4ng 12 ng\u00e0n b\u1ee9c \u1ea3nh tr\u00ean WordPress sang WebP<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tai_sao_Google_lai_phat_hanh_WebP_duoi_dang_nguon_mo\"><\/span>T\u1ea1i sao Google l\u1ea1i ph\u00e1t h\u00e0nh WebP d\u01b0\u1edbi d\u1ea1ng ngu\u1ed3n m\u1edf?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Ch\u00fang t\u00f4i tin t\u01b0\u1edfng s\u00e2u s\u1eafc v\u00e0o t\u1ea7m quan tr\u1ecdng c\u1ee7a m\u00f4 h\u00ecnh ngu\u1ed3n m\u1edf. V\u1edbi WebP \u1edf d\u1ea1ng ngu\u1ed3n m\u1edf, b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c v\u1edbi \u0111\u1ecbnh d\u1ea1ng n\u00e0y v\u00e0 h\u1ed7 tr\u1ee3 n\u00e2ng c\u1ea5p n\u00f3. V\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a m\u1ecdi ng\u01b0\u1eddi, ch\u00fang t\u00f4i tin r\u1eb1ng WebP s\u1ebd tr\u1edf n\u00ean h\u1eefu d\u1ee5ng h\u01a1n nh\u01b0 l\u00e0 \u0111\u1ecbnh d\u1ea1ng \u0111\u1ed3 h\u1ecda v\u01b0\u1ee3t th\u1eddi gian.<\/p>\n\n\n<p class=\"has-text-align-right\"><em>(Ki\u1ebfn c\u00e0ng t\u1ed5ng h\u1ee3p &amp; d\u1ecbch t\u1eeb Google)<\/em><\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Nhan_xet_cua_nguoi_dich\"><\/span>Nh\u1eadn x\u00e9t c\u1ee7a ng\u01b0\u1eddi d\u1ecbch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Vi\u1ec7c ng\u01b0\u1eddi d\u00f9ng chuy\u1ec3n sang k\u1ebft n\u1ed1i qua thi\u1ebft b\u1ecb di \u0111\u1ed9ng nhi\u1ec1u h\u01a1n l\u00e0m Google \u0111\u1eb7c bi\u1ec7t quan t\u00e2m \u0111\u1ebfn vi\u1ec7c c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng truy c\u1eadp t\u1ed1c \u0111\u1ed9 cao d\u00e0nh cho h\u1ecd.<\/p>\n\n\n<p>T\u00f4i th\u1ea5y Google c\u00f3 \u00edt nh\u1ea5t 3 c\u00f4ng c\u1ee5 cho vi\u1ec7c n\u00e0y:<\/p>\n\n\n<ol><li>Ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 trang web v\u1edbi <a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/?hl=vi\" target=\"_blank\" rel=\"noreferrer noopener\">PageSpeed Insights<\/a>: N\u00f3 cung c\u1ea5p h\u00e0ng lo\u1ea1t c\u00e1c g\u1ee3i \u00fd t\u1ed1i \u01b0u h\u00f3a. T\u00f4i c\u00f3 vi\u1ebft m\u1ed9t b\u00e0i chi ti\u1ebft v\u1ec1 <a href=\"https:\/\/kiencang.net\/tang-toc-web-pagespeed-insights\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1ch s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0y \u1edf \u0111\u00e2y<\/a>.<\/li><li>T\u0103ng t\u1ed1c \u0111\u1ed9 tr\u00ean Web v\u1edbi giao di\u1ec7n gi\u1ea3n l\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/google-amp-tang-toc-website\/\" target=\"_blank\" rel=\"noreferrer noopener\">Google AMP<\/a>: H\u1ea1 th\u1eddi gian t\u1ea3i trang xu\u1ed1ng kho\u1ea3ng ch\u01b0a \u0111\u1ebfn 1,5s nh\u1edd vi\u1ec7c lo\u1ea1i b\u1ecf c\u00e1c y\u1ebfu t\u1ed1 l\u00e0m ch\u1eadm.<\/li><li>V\u00e0 c\u00e1i cu\u1ed1i ch\u00ednh l\u00e0 WebP &#8211; nh\u00e2n v\u1eadt ch\u00ednh c\u1ee7a b\u00e0i n\u00e0y: \u1ea2nh cho ch\u1ea5t l\u01b0\u1ee3ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nh\u01b0ng dung l\u01b0\u1ee3ng \u00edt h\u01a1n 20 &#8211; 30% so v\u1edbi \u0111\u1ecbnh d\u1ea1ng th\u00f4ng th\u01b0\u1eddng.<\/li><\/ol>\n\n\n<p>Th\u1ef1c t\u1ebf r\u1ea5t c\u00f3 l\u00fd khi quan t\u00e2m \u0111\u1ebfn \u1ea3nh h\u00ecnh n\u1ebfu mu\u1ed1n t\u0103ng t\u1ed1c \u0111\u1ed9, v\u00ec \u1ea3nh th\u01b0\u1eddng chi\u1ebfm t\u1eeb <strong>30 &#8211; 70% dung l\u01b0\u1ee3ng<\/strong> c\u1ee7a m\u1ed9t trang web.<\/p>\n\n\n<p>V\u1ea5n \u0111\u1ec1 c\u1ee7a \u0111\u1ecbnh d\u1ea1ng \u1ea3nh m\u1edbi WebP l\u00e0 n\u00f3 hi\u1ec7n m\u1edbi \u0111\u01b0\u1ee3c 2 tr\u00ecnh duy\u1ec7t l\u1edbn h\u1ed7 tr\u1ee3. T\u1ee9c l\u00e0 hi\u1ec7n t\u1ea1i n\u1ebfu ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web n\u00e0o mu\u1ed1n s\u1eed d\u1ee5ng WebP h\u1ecd s\u1ebd ph\u1ea3i d\u00f9ng \u0111\u1ed3ng th\u1eddi c\u1ea3 hai \u0111\u1ecbnh d\u1ea1ng \u1ea3nh.&nbsp;\u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 r\u1eafc r\u1ed1i nh\u1ecf.<\/p>\n\n\n<p>Ngo\u00e0i ra ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web s\u1ebd ph\u1ea3i th\u1ef1c hi\u1ec7n chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u1ea3nh c\u0169 sang WebP, v\u00e0 n\u1ebfu c\u00f4ng c\u1ee5 kh\u00f4ng d\u1ec5 d\u00e0ng th\u00ec r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi s\u1ebd b\u1ecf qua.<\/p>\n\n\n<p>V\u00ec Sao?<\/p>\n\n\n<p>\u0110\u01a1n gi\u1ea3n l\u00e0 v\u00ec kh\u00f4ng ph\u1ea3i ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web n\u00e0o c\u0169ng th\u00e0nh th\u1ea1o trong c\u00e1c l\u0129nh v\u1ef1c th\u1ebf n\u00e0y. \u0110a s\u1ed1 s\u1ebd l\u00e0m \u0111\u01b0\u1ee3c n\u1ebfu c\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 c\u00f3 \u0111\u1ea7y \u0111\u1ee7 v\u00e0 d\u1ec5 d\u00f9ng, c\u00f2n kh\u00f4ng s\u1ebd ch\u1ec9 c\u00f3 gi\u1edbi chuy\u00ean gia m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ed9ng \u0111\u1ebfn.<\/p>\n\n\n<p>Tin t\u1ed1t l\u00e0 nh\u01b0 t\u00f4i \u0111\u01b0\u1ee3c bi\u1ebft th\u00ec hi\u1ec7n WordPress c\u00f3 kh\u00e1 nhi\u1ec1u c\u00f4ng c\u1ee5 gi\u00fap chuy\u1ec3n \u0111\u1ed5i \u1ea3nh JPG, PNG sang WebP, nh\u01b0ng c\u00f3 v\u1ea5n \u0111\u1ec1 nh\u1ecf: N\u1ebfu mu\u1ed1n chuy\u1ec3n \u0111\u1ed5i nhi\u1ec1u th\u00ec s\u1ebd m\u1ea5t ph\u00ed m\u1eb7c d\u00f9 kh\u00f4ng qu\u00e1 l\u1edbn (c\u1ee1 \u0111\u00e2u 10$ cho 10 ng\u00e0n b\u1ee9c \u1ea3nh). Ki\u1ec3u g\u00ec th\u00ec \u0111\u00e2y c\u0169ng l\u00e0 m\u1ed9t c\u1ea3n tr\u1edf, v\u00ec th\u1ef1c ra \u0111a s\u1ed1 <strong>v\u1eabn s\u1ed1ng t\u1ed1t khi d\u00f9ng JPG v\u00e0 PNG m\u00e0<\/strong>!<\/p>\n\n\n<p>M\u1ed9t trong c\u00e1c trang web c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp r\u1ea5t l\u1edbn m\u00e0 t\u00f4i bi\u1ebft \u0111ang d\u00f9ng WebP l\u00e0 <a href=\"http:\/\/www.wikihow.com\" target=\"_blank\" rel=\"noreferrer noopener\">WikiHow<\/a>, trang n\u00e0y c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u \u1ea3nh, c\u00f9ng v\u1edbi l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng l\u1edbn n\u00ean b\u0103ng th\u00f4ng l\u00e0 v\u1ea5n \u0111\u1ec1 quan t\u00e2m, \u0111\u00e2y ch\u1eafc ch\u1eafn l\u00e0 \u0111\u1ed9ng l\u1ef1c ch\u00ednh \u0111\u1ec3 h\u1ecd chuy\u1ec3n sang \u0111\u1ecbnh d\u1ea1ng n\u00e0y.<\/p>\n\n\n<p>C\u00e1c trang web s\u1eed d\u1ee5ng CDN \u0111\u1ec3 t\u0103ng t\u1ed1c web c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng quan t\u00e2m \u0111\u1ebfn WebP nhi\u1ec1u h\u01a1n, v\u00ec \u0111a ph\u1ea7n d\u1ecbch v\u1ee5 CDN t\u00ednh ph\u00ed qua dung l\u01b0\u1ee3ng, v\u00e0 do \u0111\u00f3 WebP gi\u00fap ng\u01b0\u1eddi d\u00f9ng ti\u1ebft ki\u1ec7m ti\u1ec1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u00e0o c\u00e1c b\u1ea1n, c\u00e1 nh\u00e2n t\u00f4i v\u1edbi mong mu\u1ed1n \u0111i s\u00e2u v\u00e0o vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 website, m\u00e0 c\u1ee5 th\u1ec3 \u1edf \u0111\u00e2y t\u00f4i mu\u1ed1n t\u0103ng t\u1ed1c cho WordPress, n\u00ean d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u00ecm hi\u1ec3u \u0111\u1ecbnh d\u1ea1ng \u1ea3nh m\u1edbi WebP n\u00e0y. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng thay th\u1ebf cho \u1ea3nh JPG v\u00e0 PNG, c\u0169ng nh\u01b0 m\u1ed9t s\u1ed1 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[296],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u1ea2nh WebP l\u00e0 g\u00ec? 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