{"id":7199,"date":"2024-11-09T13:02:10","date_gmt":"2024-11-09T13:02:10","guid":{"rendered":"https:\/\/withcode.tech\/media\/?p=7199"},"modified":"2026-01-03T05:57:35","modified_gmt":"2026-01-03T05:57:35","slug":"html_lang","status":"publish","type":"post","link":"https:\/\/withcode.tech\/media\/html_lang\/","title":{"rendered":"Web\u5236\u4f5c\u521d\u5fc3\u8005\u5fc5\u898b\uff01lang\u5c5e\u6027\u3092\u6d3b\u7528\u3057\u305fHTML\u8a00\u8a9e\u8a2d\u5b9a\u306e\u30b3\u30c4\u3010\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306e\u65b9\u6cd5\u3082\u7d39\u4ecb\u3011"},"content":{"rendered":"<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.00.55.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u751f\u5f92<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u30da\u30f3\u535a\u58eb\uff01HTML\u3092\u66f8\u3044\u3066\u308b\u3068\u304d\u306b <code>&lt;html lang=\"ja\"><\/code> \u3063\u3066\u898b\u304b\u3051\u308b\u3093\u3067\u3059\u3051\u3069\u3001\u3053\u308c\u3063\u3066\u4f55\u3067\u3059\u304b\uff1f\u6b63\u76f4\u3001\u66f8\u304b\u306a\u304f\u3066\u3082\u52d5\u304f\u304b\u3089\u30b9\u30eb\u30fc\u3057\u3066\u307e\u3057\u305f&#8230;<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.08.37.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u304a\u304a\u3001\u3044\u3044\u8cea\u554f\u3058\u3083\uff01\u305d\u308c\u306flang\u5c5e\u6027\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3001\u30da\u30fc\u30b8\u304c\u3069\u306e\u8a00\u8a9e\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u304b\u3092\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u3084\u30d6\u30e9\u30a6\u30b6\u3001\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u306b\u4f1d\u3048\u308b\u5f79\u5272\u3092\u6301\u3063\u3066\u304a\u308b\u3093\u3058\u3083\u3088\u3002\u8a73\u3057\u304f\u89e3\u8aac\u3059\u308b\u304b\u3089\u3088\u30fc\u304f\u805e\u304f\u3093\u3058\u3083\u305e\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-14.48.08.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u751f\u5f92<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u305d\u3046\u306a\u3093\u3067\u3059\u306d\uff01\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\uff01<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>Web\u5236\u4f5c\u306b\u53d6\u308a\u7d44\u307f\u59cb\u3081\u305f\u3070\u304b\u308a\u306e\u65b9\u306b\u3068\u3063\u3066\u3001HTML\u306e\u300clang\u5c5e\u6027\u300d\u3092\u3069\u306e\u3088\u3046\u306b\u4f7f\u3048\u3070\u826f\u3044\u306e\u304b\u8ff7\u3046\u3053\u3068\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u6b63\u3057\u3044\u8a00\u8a9e\u8a2d\u5b9a\u306fWeb\u30b5\u30a4\u30c8\u306e\u54c1\u8cea\u3084\u30a2\u30af\u30bb\u30b9\u6570\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u4f7f\u3044\u3084\u3059\u3055\u3001\u305d\u3057\u3066SEO\u306b\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001HTML\u3067\u306e\u8a00\u8a9e\u6307\u5b9a\u306e\u91cd\u8981\u6027\u3084\u3001\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306e\u30b3\u30c4\u3092\u521d\u5fc3\u8005\u3067\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3001\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u4f8b\u3082\u4ea4\u3048\u306a\u304c\u3089\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3082\u305d\u3082HTML\u306e\u57fa\u672c\u304c\u5206\u304b\u3089\u306a\u3044\u3068\u3044\u3046\u65b9\u306b\u306f<a href=\"https:\/\/withcode.tech\/media\/html_outline_explaining\/\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u304c\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-withcode-media wp-block-embed-withcode-media\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/withcode.tech\/media\/html_outline_explaining\/\n<\/div><\/figure>\n\n\n\n<p class=\"is-style-icon_announce\">\u300c\u5b66\u7fd2\u2192\u6848\u4ef6\u7372\u5f97\u300d\u306b\u3064\u306a\u3052\u305f\u53d7\u8b1b\u751f\u306e\u30ea\u30a2\u30eb\u306a\u4f53\u9a13\u8ac7\u3082\u516c\u958b\u4e2d\uff01<br>\u50cd\u304d\u65b9\u3092\u5909\u3048\u305f\u3044\u65b9\u306b\u3082\u97ff\u304f\u30b9\u30c8\u30fc\u30ea\u30fc\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_info\"><strong>\u4e2d\u7530\u3055\u3093<\/strong><br>\u90fd\u5185\u306e\u4f01\u696d\u306710\u5e74\u50cd\u304f\u3082\u3001\u91d1\u92ad\u9762\u30fb\u50cd\u304d\u65b9\u306b\u4e0d\u6e80\u3092\u6301\u3061\u3001\u526f\u696d\u3084\u8ee2\u8077\u3092\u8003\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3002\u300c\u5728\u5b85\u3067\u7a3c\u3052\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u300d\u3068\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306b\u306a\u308b\u3053\u3068\u3092\u6c7a\u610f\u3002\u77ed\u671f\u96c6\u4e2d\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u306b\u30d5\u30eb\u30b3\u30df\u30c3\u30c8\u3057\u305f\u7d50\u679c\u3001\u5fa9\u8077\u5f8c3\u30f6\u6708\u3067\u9000\u793e\u2192\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u3068\u3057\u3066\u6d3b\u52d5\u3092\u958b\u59cb\u3059\u308b\u3002\u73fe\u5728\u306f\u3001\u5b50\u80b2\u3066\u306b\u53c2\u52a0\u3057\u306a\u304c\u3089\u3001\u5728\u5b85\u3067\u6848\u4ef6\u3092\u3053\u306a\u3057\u53ce\u5165\u3092\u5f97\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<p>\u8a73\u3057\u304f\u306f<a href=\"https:\/\/withcode.tech\/media\/interview_1\/\" title=\"\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n<div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -internal\" data-type=\"type1\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/span>\n\t\t\t\t\t<div class=\"p-blogCard__thumb c-postThumb\"><figure class=\"c-postThumb__figure\"><img decoding=\"async\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/02\/\u30a4\u30f3\u30bf\u30d3\u30e5\u30fc-8-300x169.png\" alt=\"\" class=\"c-postThumb__img u-obf-cover\" width=\"320\" height=\"180\"><\/figure><\/div>\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/withcode.tech\/media\/interview_1\/\">\u3010\u526f\u696d\u306e\u65b9\u5fc5\u898b\u3011\u8d85\u30d6\u30e9\u30c3\u30af\u4f01\u696d\u304b\u3089\u72ec\u7acb\uff01Web\u5236\u4f5c\u306e\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u3067\u6d3b\u8e8d\u3067\u304d\u3066\u3044\u308b\u79d8\u8a23\u3068\u306f\uff1f<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\">\u30da\u30f3\u535a\u58eb\uff01\u30b9\u30af\u30fc\u30eb\u306e\u5352\u696d\u751f\u3067\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306b\u306a\u3063\u305f\u65b9\u304c\u3044\u308b\u3063\u3066\u805e\u3044\u305f\u3093\u3067\u3059\u3051\u3069\u307b\u3093\u3068\u3067\u3059\u304b\uff1f \u3046\u3080\u3001\u5143\u3005\u306f\u8d85\u30d6\u30e9\u30c3\u30af\u4f01\u696d\u3067\u50cd\u304d\u306a\u304c\u3089\u3001\u526f\u696d\u3067\u5b66\u7fd2\u3092\u7d9a\u3051\u3066\u304a\u3063\u305f\u53d7&#8230;<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>lang\u5c5e\u6027\u3092\u6d3b\u7528\u3057\u305fHTML\u8a00\u8a9e\u8a2d\u5b9a\u306e\u65b9\u6cd5<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img decoding=\"async\" width=\"792\" height=\"447\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/2-4.png\" alt=\"\" class=\"wp-image-7200\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/2-4.png 792w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/2-4-768x433.png 768w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><\/figure>\n<\/div>\n\n\n<p>HTML\u3067\u7279\u5b9a\u306e\u8a00\u8a9e\u3092\u6307\u5b9a\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u5c5e\u6027\u304c\u300clang\u5c5e\u6027\u300d\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u30da\u30fc\u30b8\u5168\u4f53\u307e\u305f\u306f\u7279\u5b9a\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u3001\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u3069\u306e\u8a00\u8a9e\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u304b\u3092\u660e\u793a\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\">lang\u5c5e\u6027\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u3084\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u3001\u7ffb\u8a33\u30c4\u30fc\u30eb\u304c\u305d\u306e\u30da\u30fc\u30b8\u3092\u6b63\u3057\u304f\u8a8d\u8b58\u3057\u3001\u9069\u5207\u306a\u51e6\u7406\u304c\u884c\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>lang\u5c5e\u6027\u306e\u57fa\u672c\u7684\u306a\u6307\u5b9a\u65b9\u6cd5\u306f\u3001HTML\u30bf\u30b0\u306e\u958b\u982d\u90e8\u306b\u300clang\u300d\u5c5e\u6027\u3092\u8ffd\u52a0\u3057\u3001\u305d\u306e\u5024\u3068\u3057\u3066\u8a00\u8a9e\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u65e5\u672c\u8a9e\u306e\u30da\u30fc\u30b8\u3067\u3042\u308c\u3070\u3001\u6b21\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;html lang=&quot;ja&quot;&gt;<\/code><\/pre><\/div>\n\n\n\n<p>\u82f1\u8a9e\u306e\u30da\u30fc\u30b8\u306e\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;html lang=&quot;en&quot;&gt;<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30da\u30fc\u30b8\u5168\u4f53\u306e\u8a00\u8a9e\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4f7f\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.11.23.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u7570\u306a\u308b\u8a00\u8a9e\u3067\u8868\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u500b\u5225\u306blang\u5c5e\u6027\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3058\u3083\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;p lang=&quot;fr&quot;&gt;Bonjour tout le monde&lt;\/p&gt;<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u306a\u305cHTML\u306b\u8a00\u8a9e\u6307\u5b9a\u304c\u5fc5\u8981\u306a\u306e\u304b\uff1f<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img decoding=\"async\" width=\"700\" height=\"514\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-12-25-8.45.12.png\" alt=\"\" class=\"wp-image-7799\"\/><\/figure>\n<\/div>\n\n\n<p>lang\u5c5e\u6027\u3092\u6b63\u3057\u304f\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306b\u304a\u3044\u3066\u8a00\u8a9e\u6307\u5b9a\u304c\u660e\u78ba\u306b\u306a\u308b\u305f\u3081\u3001<strong><span class=\"swl-marker mark_yellow\">\u30e6\u30fc\u30b6\u30fc\u304c\u305d\u306e\u8a00\u8a9e\u3067\u691c\u7d22\u3057\u305f\u969b\u306b\u9069\u5207\u306a\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/span><\/strong>\u3053\u308c\u306f\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u304c\u30da\u30fc\u30b8\u306e\u5185\u5bb9\u3092\u3088\u308a\u6b63\u78ba\u306b\u7406\u89e3\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.12.07.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u4f8b\u3048\u3070\u3001\u65e5\u672c\u8a9e\u306e\u30da\u30fc\u30b8\u306blang=&#8221;ja&#8221;\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306f\u305d\u306e\u30da\u30fc\u30b8\u304c\u65e5\u672c\u8a9e\u30b3\u30f3\u30c6\u30f3\u30c4\u3067\u3042\u308b\u3053\u3068\u3092\u8a8d\u8b58\u3057\u3001\u65e5\u672c\u8a9e\u30e6\u30fc\u30b6\u30fc\u306b\u512a\u5148\u3057\u3066\u8868\u793a\u3059\u308b\u305e\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>HTML\u3067\u4f7f\u7528\u3059\u308b\u4e3b\u306a\u8a00\u8a9e\u30b3\u30fc\u30c9\u4e00\u89a7<\/strong><\/h3>\n\n\n\n<p>HTML\u306elang\u5c5e\u6027\u3067\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u8a00\u8a9e\u30b3\u30fc\u30c9\u306b\u3088\u3063\u3066\u30da\u30fc\u30b8\u3084\u7279\u5b9a\u306e\u8981\u7d20\u306e\u8a00\u8a9e\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002\u8a00\u8a9e\u30b3\u30fc\u30c9\u306f\u901a\u5e38\u3001<a href=\"https:\/\/ja.wikipedia.org\/wiki\/ISO_639-1%E3%82%B3%E3%83%BC%E3%83%89%E4%B8%80%E8%A6%A7\">ISO 639-1<\/a>\u3068\u3044\u3046\u56fd\u969b\u6a19\u6e96\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u30012\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u3067\u8868\u3055\u308c\u3001\u65e5\u672c\u8a9e\u306e\u5834\u5408\u306f&#8221;ja&#8221;\u3001\u82f1\u8a9e\u306f&#8221;en&#8221;\u3068\u6307\u5b9a\u3057\u307e\u3059\u3002\u3088\u304f\u4f7f\u308f\u308c\u308b\u4e3b\u306a\u8a00\u8a9e\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u82f1\u8a9e\uff08English\uff09\uff1aen<\/li>\n\n\n\n<li>\u30d5\u30e9\u30f3\u30b9\u8a9e\uff08Fran\u00e7ais\uff09\uff1afr<\/li>\n\n\n\n<li>\u30c9\u30a4\u30c4\u8a9e\uff08Deutsch\uff09\uff1ade<\/li>\n\n\n\n<li>\u30b9\u30da\u30a4\u30f3\u8a9e\uff08Espa\u00f1ol\uff09\uff1aes<\/li>\n\n\n\n<li>\u4e2d\u56fd\u8a9e\uff08\u4e2d\u6587\uff09\uff1azh<\/li>\n\n\n\n<li>\u97d3\u56fd\u8a9e\uff08\ud55c\uad6d\uc5b4\uff09\uff1ako<\/li>\n<\/ul>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.11.23.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u3092HTML\u306elang\u5c5e\u6027\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30da\u30fc\u30b8\u5168\u4f53\u307e\u305f\u306f\u7279\u5b9a\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u6b63\u78ba\u306a\u8a00\u8a9e\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u53ef\u80fd\u3058\u3083\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>\u4ed6\u306e\u8a00\u8a9e\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u77e5\u308a\u305f\u3044\u65b9\u306f\u4ee5\u4e0b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/ja.wikipedia.org\/wiki\/ISO_639-1%E3%82%B3%E3%83%BC%E3%83%89%E4%B8%80%E8%A6%A7\">ISO 639-1\u30b3\u30fc\u30c9\u4e00\u89a7<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4ed6\u8a00\u8a9e\u306e\u6307\u5b9a\u65b9\u6cd5\u3068\u6ce8\u610f\u70b9<\/strong><\/h3>\n\n\n\n<p>HTML\u3067\u65e5\u672c\u8a9e\u4ee5\u5916\u306e\u8a00\u8a9e\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3082\u3001\u57fa\u672c\u7684\u306a\u624b\u9806\u306f\u65e5\u672c\u8a9e\u306e\u6307\u5b9a\u3068\u540c\u3058\u3067\u3059\u3002lang\u5c5e\u6027\u3092\u4f7f\u7528\u3057\u3066\u3001\u9069\u5207\u306a\u8a00\u8a9e\u30b3\u30fc\u30c9\u3092\u6307\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u82f1\u8a9e\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8868\u793a\u3059\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;p lang=&quot;en&quot;&gt;Hello, world!&lt;\/p&gt;<\/code><\/pre><\/div>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u4ed6\u8a00\u8a9e\u3092\u6307\u5b9a\u3059\u308b\u969b\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u6b63\u78ba\u306a\u8a00\u8a9e\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\">\u7279\u306b\u3001\u540c\u3058\u8a00\u8a9e\u3067\u3082\u5730\u57df\u3084\u65b9\u8a00\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u5bfe\u8c61\u5730\u57df\u306b\u9069\u3057\u305f\u30b3\u30fc\u30c9\u3092\u9078\u3076\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30a4\u30ae\u30ea\u30b9\u82f1\u8a9e\u306e\u5834\u5408\u306fen-GB\u3001\u30a2\u30e1\u30ea\u30ab\u82f1\u8a9e\u306e\u5834\u5408\u306fen-US\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u307e\u305f\u3001lang\u5c5e\u6027\u3092\u4f7f\u3044\u3059\u304e\u308b\u3068\u30b3\u30fc\u30c9\u304c\u8907\u96d1\u306b\u306a\u308a\u3084\u3059\u3044\u305f\u3081\u3001\u57fa\u672c\u7684\u306b\u306f\u30da\u30fc\u30b8\u5168\u4f53\u3067\u7d71\u4e00\u3057\u305f\u8a00\u8a9e\u3092\u6307\u5b9a\u3057\u3001\u5fc5\u8981\u306a\u90e8\u5206\u306b\u306e\u307f\u7570\u306a\u308b\u8a00\u8a9e\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u6700\u9069\u3067\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.09.27.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u4ed6\u8a00\u8a9e\u306e\u6307\u5b9a\u65b9\u6cd5\u3068\u305d\u306e\u9069\u7528\u7bc4\u56f2\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001Web\u30da\u30fc\u30b8\u306e\u591a\u8a00\u8a9e\u5bfe\u5fdc\u3092\u3088\u308a\u52b9\u679c\u7684\u306b\u9032\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3058\u3083\uff01<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>lang\u5c5e\u6027\u3092\u6d3b\u7528\u3057\u305f\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306e\u65b9\u6cd5<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img decoding=\"async\" width=\"1010\" height=\"576\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-09-20.31.17.png\" alt=\"\" class=\"wp-image-8255\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-09-20.31.17.png 1010w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-09-20.31.17-768x438.png 768w\" sizes=\"(max-width: 1010px) 100vw, 1010px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>\u591a\u8a00\u8a9e\u30b5\u30a4\u30c8\u3067\u8a00\u8a9e\u3092\u5207\u308a\u66ff\u3048\u308b<\/strong><\/h3>\n\n\n\n<p>\u591a\u8a00\u8a9e\u5bfe\u5fdc\u30b5\u30a4\u30c8\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u8a00\u8a9e\u74b0\u5883\u306b\u5fdc\u3058\u3066\u30da\u30fc\u30b8\u306e\u8a00\u8a9e\u3092\u81ea\u52d5\u7684\u306b\u5207\u308a\u66ff\u3048\u308b\u6a5f\u80fd\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001lang\u5c5e\u6027\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u9069\u5207\u306a\u65b9\u6cd5\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u822c\u7684\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u8a00\u8a9e\u3092\u5207\u308a\u66ff\u3048\u308b\u624b\u6bb5\u3068\u3057\u3066\u3001<strong><span class=\"swl-marker mark_yellow\">\u30da\u30fc\u30b8\u5185\u306b\u8a00\u8a9e\u9078\u629e\u30e1\u30cb\u30e5\u30fc\u3092\u8a2d\u7f6e\u3059\u308b<\/span><\/strong>\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u9078\u629e\u3055\u308c\u305f\u8a00\u8a9e\u306b\u57fa\u3065\u3044\u3066\u3001\u5bfe\u5fdc\u3059\u308bHTML\u30d5\u30a1\u30a4\u30eb\u3084\u30da\u30fc\u30b8\u3092\u8868\u793a\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306e\u60c5\u5831\u3092\u4f7f\u3063\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u9078\u629e\u3092\u8a18\u9332\u3057\u3001\u6b21\u56de\u4ee5\u964d\u306e\u8a2a\u554f\u6642\u306b\u81ea\u52d5\u3067\u305d\u306e\u8a00\u8a9e\u304c\u9069\u7528\u3055\u308c\u308b\u65b9\u6cd5\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img decoding=\"async\" width=\"2560\" height=\"1600\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-10-23-13.50.56-scaled.jpg\" alt=\"\" class=\"wp-image-7211\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-10-23-13.50.56-scaled.jpg 2560w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-10-23-13.50.56-768x480.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-10-23-13.50.56-1536x960.jpg 1536w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2024\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2024-10-23-13.50.56-2048x1280.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n<\/div>\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\">\u300cAccept-Language\u300d\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p>\u3082\u3046\u4e00\u3064\u306e\u65b9\u6cd5\u3068\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30d6\u30e9\u30a6\u30b6\u3084OS\u306e\u8a00\u8a9e\u8a2d\u5b9a\u306b\u57fa\u3065\u3044\u3066\u3001\u81ea\u52d5\u7684\u306b\u9069\u5207\u306a\u8a00\u8a9e\u7248\u306e\u30da\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u306b\u3042\u308b\u300cAccept-Language\u300d\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3001\u5bfe\u5fdc\u3059\u308b\u8a00\u8a9e\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u914d\u4fe1\u3059\u308b\u4ed5\u7d44\u307f\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3092\u4ee5\u4e0b\u306b\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e6\u30fc\u30b6\u30fc\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3001Web\u30b5\u30a4\u30c8\u3092\u8a2a\u554f\u3059\u308b\u3068HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u300cAccept-Language\u300d\u30d8\u30c3\u30c0\u30fc\u3092\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d6\u30e9\u30a6\u30b6\u3084OS\u3067\u8a2d\u5b9a\u3057\u305f\u512a\u5148\u8a00\u8a9e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>Accept-Language: en-US,en;q=0.9,ja;q=0.8,fr;q=0.7<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6700\u3082\u5e0c\u671b\u3059\u308b\u8a00\u8a9e\u306f\u82f1\u8a9e\uff08\u30a2\u30e1\u30ea\u30ab\u82f1\u8a9e\uff09\u3001\u6b21\u306b\u65e5\u672c\u8a9e\u3001\u305d\u3057\u3066\u30d5\u30e9\u30f3\u30b9\u8a9e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u300cAccept-Language\u300d\u3092\u78ba\u8a8d<\/strong>\u3059\u308b<\/h4>\n\n\n\n<p>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u300cAccept-Language\u300d\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u3053\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u512a\u5148\u3059\u308b\u8a00\u8a9e\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u9078\u629e\u3057\u3001PHP\u3084Node.js\u3001Python\u306a\u3069\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u7c21\u5358\u306b\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001PHP\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u300cAccept-Language\u300d\u30d8\u30c3\u30c0\u30fc\u3092\u53d6\u5f97\u3057\u3001\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u30da\u30fc\u30b8\u3092\u8868\u793a\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-lang=\"PHP\"><code>$lang = substr($_SERVER[&#39;HTTP_ACCEPT_LANGUAGE&#39;], 0, 2); \/\/ \u6700\u521d\u306e2\u6587\u5b57\uff08\u8a00\u8a9e\u30b3\u30fc\u30c9\uff09\u3092\u53d6\u5f97\nswitch ($lang){\n    case &quot;ja&quot;:\n        \/\/ \u65e5\u672c\u8a9e\u30da\u30fc\u30b8\u3078\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\n        header(&quot;Location: \/ja\/index.php&quot;);\n        break;\n    case &quot;en&quot;:\n        \/\/ \u82f1\u8a9e\u30da\u30fc\u30b8\u3078\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\n        header(&quot;Location: \/en\/index.php&quot;);\n        break;\n    default:\n        \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8a00\u8a9e\uff08\u4f8b\uff1a\u82f1\u8a9e\uff09\u3092\u8868\u793a\n        header(&quot;Location: \/en\/index.php&quot;);\n        break;\n}<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5bfe\u5fdc\u3059\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u7528\u610f\u3059\u308b<\/strong><\/h3>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u306e\u8a00\u8a9e\u306b\u5bfe\u5fdc\u3057\u305fHTML\u30d5\u30a1\u30a4\u30eb\u3084\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u6e96\u5099\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u57fa\u3065\u3044\u3066\u305d\u308c\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\/ja\/index.php \u306f\u65e5\u672c\u8a9e\u7248\u3001\/en\/index.php \u306f\u82f1\u8a9e\u7248\u30da\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d6\u30e9\u30a6\u30b6\u3084OS\u3067\u8a2d\u5b9a\u3057\u305f\u8a00\u8a9e\u306b\u5fdc\u3058\u3066\u3001\u81ea\u52d5\u7684\u306b\u9069\u5207\u306a\u30da\u30fc\u30b8\u3092\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.09.27.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u3053\u306e\u3088\u3046\u306a\u6280\u8853\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u591a\u8a00\u8a9e\u5bfe\u5fdc\u30b5\u30a4\u30c8\u306f\u3088\u308a\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u30e6\u30fc\u30b6\u30fc\u306b\u5411\u3051\u305f\u30b5\u30a4\u30c8\u306e\u63d0\u4f9b\u304c\u53ef\u80fd\u3058\u3083\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>hreflang\u5c5e\u6027<\/strong>\u3092\u4f7f\u3046<\/h3>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">hreflang\u5c5e\u6027\u306f\u3001\u540c\u3058\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u7570\u306a\u308b\u8a00\u8a9e\u3084\u5730\u57df\u5411\u3051\u306b\u8907\u6570\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u4f7f\u7528<\/span><\/strong>\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u82f1\u8a9e\u7248\u3068\u65e5\u672c\u8a9e\u7248\u306e\u30da\u30fc\u30b8\u304c\u3042\u308b\u5834\u5408\u3001\u305d\u308c\u305e\u308c\u306e\u30da\u30fc\u30b8\u306bhreflang\u5c5e\u6027\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001Google\u306a\u3069\u306e\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306b\u3069\u306e\u30da\u30fc\u30b8\u304c\u3069\u306e\u8a00\u8a9e\u3084\u5730\u57df\u5411\u3051\u3067\u3042\u308b\u304b\u3092\u660e\u78ba\u306b\u4f1d\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u7d50\u679c\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u305d\u306e\u8a00\u8a9e\u3084\u5730\u57df\u306b\u9069\u3057\u305f\u30da\u30fc\u30b8\u3092\u8868\u793a\u3055\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001hreflang\u5c5e\u6027\u306e\u4f7f\u7528\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;link rel=&quot;alternate&quot; href=&quot;https:\/\/example.com\/en\/&quot; hreflang=&quot;en&quot;&gt;\n&lt;link rel=&quot;alternate&quot; href=&quot;https:\/\/example.com\/ja\/&quot; hreflang=&quot;ja&quot;&gt;<\/code><\/pre><\/div>\n\n\n\n<p>hreflang\u5c5e\u6027\u306f\u7570\u306a\u308b\u8a00\u8a9e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30da\u30fc\u30b8\u9593\u3067\u306e\u9069\u5207\u306a\u8a00\u8a9e\u3084\u5730\u57df\u306e\u8a2d\u5b9a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">lang\u5c5e\u6027\u306f\u3001HTML\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5168\u4f53\u3084\u7279\u5b9a\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u3069\u306e\u8a00\u8a9e\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u305f\u3081\u306b\u4f7f\u7528<\/span><\/strong>\u3055\u308c\u3001\u30d6\u30e9\u30a6\u30b6\u3084\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u304c\u6b63\u3057\u3044\u8a00\u8a9e\u3067\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8868\u793a\u3057\u305f\u308a\u3001\u97f3\u58f0\u8aad\u307f\u4e0a\u3052\u3092\u884c\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>lang\u5c5e\u6027\u3068hreflang\u5c5e\u6027\u306f\u3069\u3061\u3089\u3082Web\u30b5\u30a4\u30c8\u306e\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u304c\u3001\u4f7f\u3044\u65b9\u3084\u76ee\u7684\u306b\u306f\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u3054\u81ea\u8eab\u306e\u30b5\u30a4\u30c8\u306b\u5408\u308f\u305b\u3066\u6700\u9069\u306a\u5c5e\u6027\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-14.48.08.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u751f\u5f92<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>lang\u5c5e\u6027\u3063\u3066\u305f\u3060\u306e\u8a18\u53f7\u3060\u3068\u601d\u3063\u3066\u307e\u3057\u305f\u3051\u3069\u3001SEO\u3084\u591a\u8a00\u8a9e\u5bfe\u5fdc\u306b\u307e\u3067\u95a2\u308f\u3063\u3066\u308b\u306a\u3093\u3066\u9a5a\u304d\u3067\u3059\uff01<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.12.07.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u305d\u3046\u3058\u3083\u308d\u3046\uff1f\u898b\u305f\u76ee\u306b\u306f\u76f4\u63a5\u5f71\u97ff\u305b\u3093\u304c\u3001\u88cf\u5074\u3067\u30e6\u30fc\u30b6\u30fc\u3084\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306b\u5927\u304d\u306a\u610f\u5473\u3092\u4f1d\u3048\u3066\u304a\u308b\u3002\u307e\u3055\u306b\u7e01\u306e\u4e0b\u306e\u529b\u6301\u3061\u3058\u3083\u306a\u3002<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span 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