{"id":15559,"date":"2026-07-07T10:05:48","date_gmt":"2026-07-07T01:05:48","guid":{"rendered":"https:\/\/rakkokeyword.com\/techo\/?p=15559"},"modified":"2026-07-07T10:05:48","modified_gmt":"2026-07-07T01:05:48","slug":"tool-jfif-to-jpg","status":"publish","type":"post","link":"https:\/\/rakkokeyword.com\/techo\/tool-jfif-to-jpg\/","title":{"rendered":"JFIF\u2192JPG\u5909\u63db\u30c4\u30fc\u30eb"},"content":{"rendered":"<div id=\"sgb-css-id-1\">\n<div id=\"jfif2jpg-container\">\n    <style>\n        #jfif2jpg-container {\n            width: 100%;\n            font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif;\n            color: #333;\n            line-height: 1.5;\n            box-sizing: border-box;\n        }\n        #jfif2jpg-container p { margin-top: 0; }\n        #jfif2jpg-container *:focus-visible { outline: 2px solid #13284B; outline-offset: 2px; }\n        .jfif2jpg-security {\n            background-color: #f8f9fa;\n    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}\n\n        .jfif2jpg-mode-guide { display: flex; flex-direction: column; gap: 10px; margin-bottom: 15px; }\n        .jfif2jpg-mode-guide-item {\n            display: flex;\n            align-items: flex-start;\n            gap: 12px;\n            padding: 14px;\n            min-height: 44px;\n            background: #fff;\n            border: 1px solid #ddd;\n            border-left: 3px solid #ccc;\n            border-radius: 4px;\n            cursor: pointer;\n            transition: background-color 0.15s ease, border-color 0.15s ease;\n        }\n        .jfif2jpg-mode-guide-item.jfif2jpg-guide-active {\n            background: #eef1f7;\n            border-color: #c7cfe0;\n            border-left-color: #13284B;\n        }\n        .jfif2jpg-mode-radio {\n            flex-shrink: 0;\n            width: 18px;\n            height: 18px;\n            margin-top: 3px;\n            cursor: pointer;\n            accent-color: #13284B;\n        }\n        .jfif2jpg-mode-guide-icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 1px; }\n        .jfif2jpg-mode-guide-icon svg { width: 100%; height: 100%; fill: #999; transition: fill 0.15s ease; }\n        .jfif2jpg-guide-active .jfif2jpg-mode-guide-icon svg { fill: #13284B; }\n        .jfif2jpg-mode-guide-text { flex: 1; }\n        .jfif2jpg-mode-guide-title { font-weight: bold; font-size: 13.5px; margin: 0 0 2px 0; color: #333; }\n        .jfif2jpg-mode-guide-desc { font-size: 12.5px; color: #666; margin: 0; }\n\n        #jfif2jpg-convert-btn {\n            width: 100%;\n            min-height: 44px;\n            padding: 12px 15px;\n            background-color: #13284B;\n            color: #fff;\n            font-size: 1.1em;\n            font-weight: bold;\n            border: none;\n            border-radius: 4px;\n            cursor: pointer;\n        }\n        #jfif2jpg-convert-btn:disabled { cursor: not-allowed; opacity: 0.5; }\n        .jfif2jpg-file-row { border: 1px solid #eee; padding: 10px; 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src=\"https:\/\/media-api.qcdgv19414.rakkoserver.net\/lib\/jszip.min.js\"><\/script>\n<script>\n\n<\/script>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">JFIF\u62e1\u5f35\u5b50\u306e\u753b\u50cf\u3092JPG\u306b\u4e00\u62ec\u5909\u63db\u3059\u308b\u7121\u6599\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u7e2e\u5c0f\u3059\u308b\u5909\u63db\u30e2\u30fc\u30c9\u3068\u3001\u753b\u8cea\u306e\u52a3\u5316\u304c\u306a\u3044\u5909\u63db\u30e2\u30fc\u30c9\u306e2\u7a2e\u985e\u304b\u3089\u9078\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-0\">\u3053\u306e\u30c4\u30fc\u30eb\u3067\u3067\u304d\u308b\u3053\u3068<\/h2>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u30fb\u8907\u6570\u306eJFIF\u30d5\u30a1\u30a4\u30eb\u3092\u307e\u3068\u3081\u3066\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3001\u4e00\u62ec\u3067\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30fb\u5909\u63db\u5f8c\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u500b\u5225\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u308b\u307b\u304b\u3001\u307e\u3068\u3081\u3066ZIP\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">\u3053\u306e\u30c4\u30fc\u30eb\u306e\u4f7f\u3044\u65b9\uff083\u30b9\u30c6\u30c3\u30d7\u3067\u5b8c\u4e86\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5909\u63db\u3057\u305f\u3044JFIF\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u30c4\u30fc\u30eb\u4e0a\u90e8\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6b04\u306b\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u304b\u3001\u30af\u30ea\u30c3\u30af\u3057\u3066\u9078\u629e\u3057\u307e\u3059\uff08\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u306e\u540c\u6642\u9078\u629e\u304c\u53ef\u80fd\u3067\u3059\uff09\u3002<\/li>\n\n\n\n<li>\u300c\u9ad8\u901f\u30e2\u30fc\u30c9\u300d\u307e\u305f\u306f\u300c\u901a\u5e38\u30e2\u30fc\u30c9\u300d\u3092\u9078\u3073\u307e\u3059\u3002\u8ff7\u3063\u305f\u5834\u5408\u306f\u3001\u753b\u8cea\u306e\u52a3\u5316\u304c\u306a\u304f\u51e6\u7406\u3082\u65e9\u3044\u300c\u9ad8\u901f\u30e2\u30fc\u30c9\u300d\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3057\u305f\u3044\u5834\u5408\u306f\u300c\u901a\u5e38\u30e2\u30fc\u30c9\u300d\u3092\u9078\u3073\u3001\u753b\u8cea\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u300c\u5909\u63db\u3092\u5b9f\u884c\u3059\u308b\u300d\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u5909\u63db\u304c\u59cb\u307e\u308a\u307e\u3059\u3002\u5b8c\u4e86\u5f8c\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3054\u3068\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u304b\u3001\u300c\u3059\u3079\u3066\u3092ZIP\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u300d\u304b\u3089\u307e\u3068\u3081\u3066\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-2\">JFIF\u3068JPG\u306e\u5909\u63db\u306b\u95a2\u3059\u308b\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">JFIF\u3068JPG\u306f\u3069\u3061\u3089\u3082\u5199\u771f\u3084\u753b\u50cf\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u5f62\u5f0f\u3067\u3059\u304c\u3001\u540d\u79f0\u3084\u62e1\u5f35\u5b50\u306b\u306f\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u5909\u63db\u524d\u306b\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002<\/p>\n\n\n<div id=\"id-0ffb5673-84e9-4c0c-a862-af2e7be8f8b6\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>JFIF<\/th><th>JPG<\/th><\/tr><\/thead><tbody><tr><td>\u6b63\u5f0f\u540d\u79f0<\/td><td>JPEG File Interchange Format<\/td><td>Joint Photographic Experts Group<\/td><\/tr><tr><td>\u62e1\u5f35\u5b50<\/td><td>.jfif<\/td><td>.jpg\uff0f.jpeg<\/td><\/tr><tr><td>MIME\u30bf\u30a4\u30d7<\/td><td>image\/jpeg<\/td><td>image\/jpeg<\/td><\/tr><tr><td>\u7279\u5fb4<\/td><td>JPEG\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u5f62\u5f0f\u306e\u3072\u3068\u3064\u3002\u4e2d\u8eab\u306fJPEG\u3068\u307b\u307c\u540c\u4e00<\/td><td>\u4e16\u754c\u7684\u306b\u6700\u3082\u666e\u53ca\u3057\u3066\u3044\u308b\u753b\u50cf\u5f62\u5f0f\u3067\u3001\u591a\u304f\u306e\u30bd\u30d5\u30c8\u3084\u30b5\u30fc\u30d3\u30b9\u304c\u6a19\u6e96\u3067\u5bfe\u5fdc<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306b\u3001JFIF\u3068JPG\u306f\u4e2d\u8eab\u306e\u30c7\u30fc\u30bf\u5f62\u5f0f\u3068\u3057\u3066\u306f\u307b\u307c\u540c\u3058\u3082\u306e\u3067\u3059\u3002\u305d\u308c\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u62e1\u5f35\u5b50\u304c\u300c.jfif\u300d\u306e\u307e\u307e\u3060\u3068\u3001\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30a2\u30d7\u30ea\u3084\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u306a\u304b\u3063\u305f\u308a\u3001\u6b63\u3057\u304f\u8868\u793a\u3055\u308c\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001\u3053\u306e\u9055\u3044\u306b\u3088\u308b\u4e0d\u4fbf\u3055\u3092\u305d\u306e\u5834\u3067\u89e3\u6d88\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u3053\u306e\u30c4\u30fc\u30eb\u304c\u5f79\u7acb\u3064\u3068\u304d\u306f\u3069\u3093\u306a\u3068\u304d\uff1f\uff08\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u3001\u672c\u30c4\u30fc\u30eb\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30fbWeb\u30b5\u30a4\u30c8\u3084\u30c1\u30e3\u30c3\u30c8\u30c4\u30fc\u30eb\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u753b\u50cf\u304c\u300c.jfif\u300d\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u30d6\u30ed\u30b0\u3084SNS\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u306a\u3044\u3068\u304d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30fb\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u53d7\u3051\u53d6\u3063\u305f\u753b\u50cf\u304c\u300c.jfif\u300d\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u4ed6\u306e\u4eba\u306b\u9001\u3063\u3066\u3082\u6b63\u3057\u304f\u958b\u3051\u306a\u3044\u3068\u8a00\u308f\u308c\u305f\u3068\u304d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30fb\u5927\u91cf\u306eJFIF\u753b\u50cf\u3092\u307e\u3068\u3081\u3066JPG\u306b\u5909\u63db\u3057\u3066\u3001\u5199\u771f\u30d5\u30a9\u30eb\u30c0\u3084\u30d6\u30ed\u30b0\u7528\u306e\u753b\u50cf\u7d20\u6750\u3068\u3057\u3066\u6574\u7406\u3057\u305f\u3044\u3068\u304d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30fb\u5229\u7528\u3057\u3066\u3044\u308b\u753b\u50cf\u7de8\u96c6\u30bd\u30d5\u30c8\u3084CMS\uff08WordPress\u306a\u3069\uff09\u304cJFIF\u5f62\u5f0f\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u3089\u305a\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u304d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q. iPhone\u3067\u64ae\u3063\u305f\u5199\u771f\u304cJFIF\u306b\u306a\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/strong><br>A. iPhone\u3067\u76f4\u63a5\u64ae\u5f71\u3057\u305f\u5199\u771f\u81ea\u4f53\u306f\u901a\u5e38HEIC\u5f62\u5f0f\u3067\u3059\u304c\u3001Web\u30b5\u30a4\u30c8\u3084\u30a2\u30d7\u30ea\u3092\u7d4c\u7531\u3057\u3066\u753b\u50cf\u3092\u4fdd\u5b58\u30fb\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u5834\u5408\u3084\u3001\u4e00\u90e8\u306e\u30d6\u30e9\u30a6\u30b6\u30fbSNS\u3067\u306e\u5171\u6709\u6642\u306b\u3001JPEG\u30c7\u30fc\u30bf\u304c\u62e1\u5f35\u5b50\u300c.jfif\u300d\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4e2d\u8eab\u306fJPEG\u3068\u540c\u3058\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u305f\u3081\u3001\u672c\u30c4\u30fc\u30eb\u3067\u62e1\u5f35\u5b50\u3092.jpg\u306b\u5909\u66f4\u3059\u308c\u3070\u3001\u591a\u304f\u306e\u30a2\u30d7\u30ea\u3084\u30b5\u30fc\u30d3\u30b9\u3067\u554f\u984c\u306a\u304f\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q. \u9ad8\u901f\u30e2\u30fc\u30c9\u3068\u901a\u5e38\u30e2\u30fc\u30c9\u306f\u3069\u3061\u3089\u3092\u9078\u3079\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/strong><br>A. \u57fa\u672c\u7684\u306b\u306f\u300c\u9ad8\u901f\u30e2\u30fc\u30c9\u300d\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u306f\u5909\u3048\u305a\u62e1\u5f35\u5b50\u3060\u3051\u3092\u5909\u66f4\u3059\u308b\u305f\u3081\u3001\u753b\u8cea\u306e\u52a3\u5316\u304c\u306a\u304f\u77ac\u6642\u306b\u5b8c\u4e86\u3057\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3057\u305f\u3044\u5834\u5408\u3084\u3001\u9ad8\u901f\u30e2\u30fc\u30c9\u3067\u6b63\u3057\u304f\u958b\u3051\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u5834\u5408\u306b\u306e\u307f\u300c\u901a\u5e38\u30e2\u30fc\u30c9\u300d\u3092\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q. \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u305f\u753b\u50cf\u306f\u5916\u90e8\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u304b\uff1f<\/strong><br>A. \u3044\u3044\u3048\u3002\u672c\u30c4\u30fc\u30eb\u306f\u3059\u3079\u3066\u306e\u51e6\u7406\u3092\u304a\u4f7f\u3044\u306e\u30d6\u30e9\u30a6\u30b6\u5185\u3067\u884c\u3046\u305f\u3081\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u304c\u5916\u90e8\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q. \u7121\u6599\u3067\u5546\u7528\u5229\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><br>A. \u306f\u3044\u3001\u4f1a\u54e1\u767b\u9332\u4e0d\u8981\u30fb\u7121\u6599\u3067\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002\u5546\u7528\u5229\u7528\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q. \u30d1\u30bd\u30b3\u30f3\u3068\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u3069\u3061\u3089\u3067\u3082\u4f7f\u3048\u307e\u3059\u304b\uff1f<\/strong><br>A. \u306f\u3044\u3001Windows\u30fbMac\u30fbiPhone\u30fbAndroid\u306a\u3069\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u4f7f\u3048\u308b\u7aef\u672b\u3067\u3042\u308c\u3070\u554f\u984c\u306a\u304f\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">\u3054\u5229\u7528\u306b\u3042\u305f\u3063\u3066\u306e\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u5ea6\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u308b\u30d5\u30a1\u30a4\u30eb\u306f\u6700\u592730\u4ef6\u30011\u30d5\u30a1\u30a4\u30eb\u3042\u305f\u308a\u306e\u76ee\u5b89\u306f100MB\u307e\u3067\u3067\u3059\u3002\u307e\u305f\u3001\u5909\u63db\u4e2d\u306b\u30d6\u30e9\u30a6\u30b6\u306e\u30bf\u30d6\u3092\u9589\u3058\u305f\u308a\u3001\u30da\u30fc\u30b8\u3092\u66f4\u65b0\u3057\u305f\u308a\u3059\u308b\u3068\u51e6\u7406\u304c\u4e2d\u65ad\u3055\u308c\u307e\u3059\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002\u62e1\u5f35\u5b50\u304c\u300c.jfif\u300d\u4ee5\u5916\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u5909\u63db\u5bfe\u8c61\u5916\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b89\u5fc3\u8a2d\u8a08\uff1a\u30d5\u30a1\u30a4\u30eb\u306f\u304a\u5ba2\u69d8\u306e\u7aef\u672b\u5185\u3067\u51e6\u7406\u3055\u308c\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u306f\u9001\u4fe1\u3055\u308c\u307e\u305b\u3093 JFIF\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7 \u307e\u305f\u306f\u30af\u30ea\u30c3\u30af\u3057\u3066\u9078\u629e \u5bfe\u5fdc\u5f62\u5f0f: JFIF \/ \u8907\u6570\u9078\u629e\u53ef\uff08\u6700\u592730\u4ef6\uff09\/ \u4e0a\u9650\u76ee\u5b89 100MB \u30d5\u30a1\u30a4\u30eb &#8230; 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