{"id":26321,"date":"2024-11-10T12:23:41","date_gmt":"2024-11-10T03:23:41","guid":{"rendered":"https:\/\/motoki-design.co.jp\/wordpress\/?p=26321"},"modified":"2026-10-13T05:19:46","modified_gmt":"2026-10-12T20:19:46","slug":"referrer-policy","status":"publish","type":"post","link":"https:\/\/motoki-design.co.jp\/wordpress\/referrer-policy\/","title":{"rendered":"WordPress\u2502Referrer-Policy\u3092\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u30fc\u306b\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Referrer-Policy<\/strong>\u3068\u306f\u3001Web\u30da\u30fc\u30b8\u304c\u5225\u306e\u30da\u30fc\u30b8\u3078\u30ea\u30f3\u30af\u3059\u308b\u3068\u304d\u306b\u3001\u53c2\u7167\u5143\uff08\u30ea\u30d5\u30a1\u30e9\u30fc\uff09\u306e\u60c5\u5831\u3092\u3069\u306e\u3088\u3046\u306b\u9001\u4fe1\u3059\u308b\u304b\u3092\u5236\u5fa1\u3059\u308bHTTP\u30d8\u30c3\u30c0\u30fc\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3057\u3001\u9001\u4fe1\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306e\u5185\u5bb9\u3092\u5236\u9650\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SEO\u65bd\u7b56\u306e\u30c4\u30fc\u30eb\u3067Referrer-Policy\u304c\u306a\u3044\u3053\u3068\u3092\u6307\u6458\u3055\u308c\u305f\u306e\u3067\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u30fc\u306b\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u89e3\u8aac\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">\u9001\u4fe1\u5148\u3067\u78ba\u8a8d\u3057\u305fReferer\u306e\u9055\u3044<\/h2>\n<div class=\"c-scrollHint sp_\"><span>\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <i class=\"icon-more_arrow\"><\/i><\/span><\/div><figure data-table-scrollable=\"sp\" class=\"wp-block-table\"><table style=\"--table-width:760px;\"><thead><tr><th>\u78ba\u8a8d\u3059\u308b\u30ea\u30af\u30a8\u30b9\u30c8<\/th><th>\u9001\u4fe1\u5148\u3067\u53d7\u3051\u53d6\u3063\u305f\u5024<\/th><th>\u5206\u304b\u308b\u3053\u3068<\/th><\/tr><\/thead><tbody><tr><td>\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u306e\u753b\u50cf\u53d6\u5f97<\/td><td>\u53c2\u7167\u5143\u306e\u30d1\u30b9\u3068\u30af\u30a8\u30ea\u30fc\u3092\u542b\u3080URL<\/td><td>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u9001\u3089\u308c\u306a\u304b\u3063\u305f<\/td><\/tr><tr><td>\u5225\u30aa\u30ea\u30b8\u30f3\u306e\u753b\u50cf\u53d6\u5f97<\/td><td>\u53c2\u7167\u5143\u306e\u30aa\u30ea\u30b8\u30f3\u306e\u307f<\/td><td>\u30d1\u30b9\u30fb\u30af\u30a8\u30ea\u30fc\u306f\u9001\u3089\u308c\u306a\u304b\u3063\u305f<\/td><\/tr><tr><td>\u753b\u50cf\u306breferrerpolicy=&#8221;no-referrer&#8221;\u3092\u6307\u5b9a<\/td><td>Referer\u30d8\u30c3\u30c0\u30fc\u306a\u3057<\/td><td>\u500b\u5225\u8981\u7d20\u306e\u6307\u5b9a\u3082\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n<p class=\"wp-block-paragraph\">\u63b2\u8f09\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u8aad\u307f\u8fbc\u3093\u3060\u9694\u96e2WordPress\u3067\u3001strict-origin-when-cross-origin\u306eHTTP\u30d8\u30c3\u30c0\u30fc\u3092\u51fa\u3057\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u753b\u50cf\u53d6\u5f97\u3092\u9001\u4fe1\u5148\u3067\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u8a66\u9a13\u3067\u306f\u540c\u3058HTTP\u306e\u30db\u30b9\u30c8\u540d\u9055\u3044\u3092\u5225\u30aa\u30ea\u30b8\u30f3\u306b\u3057\u3066\u3044\u307e\u3059\u3002HTTPS\u304b\u3089HTTP\u3078\u306e\u79fb\u52d5\u3001\u30ea\u30f3\u30af\u306e\u30af\u30ea\u30c3\u30af\u306b\u3088\u308b\u9077\u79fb\u3001CDN\u3067\u306e\u4e0a\u66f8\u304d\u306f\u3053\u306e\u8a66\u9a13\u306b\u542b\u307f\u307e\u305b\u3093\u3002<\/p>\n<p class=\"wp-block-paragraph\">WordPress\u306esend_headers\u306b\u3088\u308b\u5b9fHTTP\u3067\u3082\u3001\u672a\u8a2d\u5b9a\u3078\u306e\u8ffd\u52a0\u3001\u5927\u5c0f\u6587\u5b57\u304c\u6df7\u5728\u3057\u305f\u65e2\u5b58\u30d8\u30c3\u30c0\u30fc\u306e\u4fdd\u6301\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u505c\u6b62\u5f8c\u306e\u5fa9\u5e30\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u5c0e\u5165\u5148\u3067\u306fHTML\u3068\u9001\u4fe1\u5148\u306e\u4e21\u65b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n<h2 class=\"wp-block-heading\">WordPress\u3067Referrer-Policy\u3092\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u30fc\u306b\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u5bfe\u8c61\u306eHTML\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u65e2\u5b58\u306eReferrer-Policy\u304c\u3042\u308b\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002\u8a3a\u65ad\u306e\u8b66\u544a\u3060\u3051\u3092\u7406\u7531\u306b\u3001\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u5909\u66f4\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b50\u30c6\u30fc\u30de\u306efunctions.php\u3078\u8ffd\u52a0\u3057\u307e\u3059\u3002WordPress\u306ewp_headers\u306bReferrer-Policy\u304c\u65e2\u306b\u3042\u308c\u3070\u3001\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u306e\u9055\u3044\u304c\u3042\u3063\u3066\u3082\u4e0a\u66f8\u304d\u3057\u307e\u305b\u3093\u3002\u30b5\u30fc\u30d0\u30fc\u3001CDN\u3001\u4ed6\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u5225\u306e\u65b9\u6cd5\u3067\u4ed8\u3051\u308b\u5024\u306f\u3053\u306e\u5224\u5b9a\u306e\u5bfe\u8c61\u5916\u3067\u3059\u3002\u305d\u3061\u3089\u3067\u8a2d\u5b9a\u6e08\u307f\u306a\u3089\u3001\u7ba1\u7406\u3059\u308b\u5834\u6240\u30921\u3064\u306b\u307e\u3068\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">Code Snippet\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u304b\u3089\u633f\u5165\u3057\u3066\u3082OK\u3067\u3059<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism lang-php\" data-lang=\"PHP\"><code>add_filter( &#x27;wp_headers&#x27;, function ( $headers ) {\n    foreach ( array_keys( $headers ) as $name ) {\n        if ( &#x27;referrer-policy&#x27; === strtolower( $name ) ) return $headers;\n    }\n    $headers[&#x27;Referrer-Policy&#x27;] = &#x27;strict-origin-when-cross-origin&#x27;;\n    return $headers;\n} );<\/code><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">Referrer-Policy \u30aa\u30d7\u30b7\u30e7\u30f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3067\u306fstrict-origin-when-cross-origin\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002no-referrer-when-downgrade\u306fHTTPS\u540c\u58eb\u306e\u5225\u30b5\u30a4\u30c8\u3078\u30d1\u30b9\u30fb\u30af\u30a8\u30ea\u30fc\u3092\u9001\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u540c\u3058\u4fdd\u8b77\u7bc4\u56f2\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e6\u30fc\u30b6\u30fc\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u4fdd\u8b77\u3057\u3064\u3064\u5fc5\u8981\u306a\u60c5\u5831\u306e\u5171\u6709\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30aa\u30d7\u30b7\u30e7\u30f3<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><th>no-referrer<\/th><td>\u53c2\u7167\u5143\u60c5\u5831\u3092\u5168\u304f\u9001\u4fe1\u3057\u306a\u3044\u3002<\/td><\/tr><tr><th>no-referrer-when-downgrade<\/th><td>HTTPS \u2192 HTTP \u306e\u3088\u3046\u306a\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u6642\u306b\u306f\u9001\u4fe1\u3057\u306a\u3044\u3002\u305d\u308c\u4ee5\u5916\u306f\u30d1\u30b9\u30fb\u30af\u30a8\u30ea\u30fc\u3092\u542b\u3080URL\u3092\u9001\u4fe1\u3059\u308b\u3002<\/td><\/tr><tr><th>same-origin<\/th><td>\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u306e\u5834\u5408\u306e\u307f\u53c2\u7167\u5143\u60c5\u5831\u3092\u9001\u4fe1\u3059\u308b\u3002<\/td><\/tr><tr><th>strict-origin<\/th><td>\u540c\u4e00\u30fb\u5225\u30aa\u30ea\u30b8\u30f3\u3068\u3082\u30aa\u30ea\u30b8\u30f3\u306e\u307f\u3092\u9001\u4fe1\u3002HTTPS\u304b\u3089HTTP\u306b\u306f\u9001\u4fe1\u3057\u306a\u3044\u3002<\/td><\/tr><tr><th>strict-origin-when-cross-origin<\/th><td>\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u306f\u30d1\u30b9\u30fb\u30af\u30a8\u30ea\u30fc\u3092\u542b\u3080URL\u3001\u5225\u30aa\u30ea\u30b8\u30f3\u306f\u30aa\u30ea\u30b8\u30f3\u306e\u307f\u3002HTTPS\u304b\u3089HTTP\u306b\u306f\u9001\u4fe1\u3057\u306a\u3044\u3002<\/td><\/tr><tr><th>origin<\/th><td>\u53c2\u7167\u5143\u306e\u30aa\u30ea\u30b8\u30f3\u306e\u307f\u3092\u5e38\u306b\u9001\u4fe1\u3059\u308b\u3002<\/td><\/tr><tr><th>origin-when-cross-origin<\/th><td>\u540c\u4e00\u30aa\u30ea\u30b8\u30f3\u306f\u5b8c\u5168\u306aURL\u3092\u9001\u4fe1\u3001\u30af\u30ed\u30b9\u30aa\u30ea\u30b8\u30f3\u306f\u30aa\u30ea\u30b8\u30f3\u306e\u307f\u3092\u9001\u4fe1\u3002<\/td><\/tr><tr><th>unsafe-url<\/th><td>\u5e38\u306b\u5b8c\u5168\u306aURL\u3092\u9001\u4fe1\u3059\u308b\u3002<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Referrer-Policy \u30aa\u30d7\u30b7\u30e7\u30f3<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3059\u308b\u306e\u306fHTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u30fc\u3067\u3059\u3002\u5225\u306e\u6307\u5b9a\u65b9\u6cd5\u3068\u3057\u3066HTML\u306emeta\u8981\u7d20\u3084\u500b\u5225\u8981\u7d20\u306ereferrerpolicy\u5c5e\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3067Network\u3092\u958b\u304d\u3001\u5bfe\u8c61\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u307e\u3059\u3002HTML\u6587\u66f8\u306eResponse Headers\u3067Referrer-Policy\u3092\u78ba\u8a8d\u3057\u3001\u30ea\u30f3\u30af\u5148\u3084\u753b\u50cf\u306eRequest Headers\u306b\u3042\u308bReferer\u3068\u306f\u5206\u3051\u3066\u8aad\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"486\" height=\"96\" src=\"https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/2024-11-10_12h19_56.png\" alt=\"Google Chrome\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u753b\u9762\u3067Referrer-Policy\u3092\u691c\u7d22\u3057\u3066\u8a2d\u5b9a\u5185\u5bb9\u3092\u78ba\u8a8d\u3059\u308b\u69d8\u5b50\u3002\" class=\"wp-image-26322\" srcset=\"https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/2024-11-10_12h19_56.png 486w, https:\/\/motoki-design.co.jp\/wordpress\/wp-content\/uploads\/2024-11-10_12h19_56-382x75.png 382w\" sizes=\"(max-width: 486px) 100vw, 486px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u306f\u3001GitHub\u306e<a href=\"https:\/\/github.com\/MOTOKI-LLC\/WAZA-code\/tree\/main\/referrer-policy\">MOTOKI-LLC\/WAZA-code<\/a>\u306b\u3082\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u306fWordPress\u304c\u751f\u6210\u3059\u308b\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u7bc4\u56f2\u306b\u9069\u7528\u3057\u307e\u3059\u3002\u9759\u7684\u30d5\u30a1\u30a4\u30eb\u3001CDN\u30ad\u30e3\u30c3\u30b7\u30e5\u3001REST 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