{"id":12542,"date":"2026-06-01T19:12:51","date_gmt":"2026-06-01T10:12:51","guid":{"rendered":"https:\/\/code-plus.jp\/gp\/?page_id=12542"},"modified":"2026-06-01T19:12:51","modified_gmt":"2026-06-01T10:12:51","slug":"imageupscale-converter","status":"publish","type":"page","link":"https:\/\/code-plus.jp\/gp\/tools\/imageupscale-converter\/","title":{"rendered":"\u753b\u50cfLanczos\u62e1\u5927\u30c4\u30fc\u30eb | AI\u3092\u4f7f\u308f\u305a Lanczos\u3067\u62e1\u5927"},"content":{"rendered":"<!-- \u0f3b\u273f\ud835\udc0f\ud835\udc00\ud835\udc06\ud835\udc04\u0f3a -->\n\n<!-- \u0f3b.mezzala\uff08\u4f59\u767d\u8abf\u6574\uff1apage\u4e0a\uff09\u0f3a -->\n<hr class=\"spacer-mezzala\" \/>\n\n<hr id=\"ch-TextConverter\" anchor \/>\n<div class=\"pg-saracnvtvkaa bg-hackingGate\">\n\n  <header class=\"page-header mx-auto\">\n    <!-- \u2756\u30d1\u30f3\u304f\u305a\u30ea\u30b9\u30c8 --><div><!-- breadcrumb.php -->\n<style>\n\/* \u2756breadcrumb.leckermaul\uff08\u30d1\u30f3\u304f\u305a\u30ea\u30b9\u30c8\uff09\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 \u0f1a\u0f36\u22b0\u27e1\u22b1\u0f36\u0f1a\u0f3a*\/\n.zaratan .breadcrumb.leckermaul {\n\twidth: 100%;\n\tmax-width: calc(var(--zvw,1vw) * 92.5);\n\tmargin-inline: auto;\n}\n\n.zaratan .breadcrumb.leckermaul :is(ul, ol) {\n\tmin-height: 3rem;\n\tline-height: initial;\n\tfont-size: 0;\n\tletter-spacing: 0;\n\toverflow: hidden;\n}\n\n.zaratan .breadcrumb.leckermaul li {\n\tdisplay: inline;\n\tline-height: 1.6;\n\tfont-size: clamp(0.775rem, calc(0.775rem + ((1vw - 0.225rem) * 0.1563)), 0.8750rem);\n}\n\n.zaratan .breadcrumb.leckermaul li>*,\n.zaratan .breadcrumb.leckermaul li::before {\n\tposition: relative;\n\ttop: 0.125em;\n\tdisplay: inline-flex;\n\talign-items: center;\n}\n\n.zaratan .breadcrumb.leckermaul a {\n\tdisplay: inline;\n\tcolor: var(--c-notice-600, hsl(240, 32%, 53%));\n\tmargin-right: .5em;\n}\n\n.zaratan .breadcrumb.leckermaul li:nth-of-type(n+2) a {\n\tmargin-left: .5em;\n}\n\n\/* \u73fe\u5728\u306e\u30da\u30fc\u30b8\uff08\u30ea\u30f3\u30af\u306a\u3057\u3002<span aria-current=\"page\">\uff09 *\/\n.zaratan .breadcrumb.leckermaul [aria-current=\"page\"] {\n\tdisplay: inline;\n\tmargin-inline: .5em;\n\tcolor: var(--c-base-600, hsl(224, 6%, 43%));\n}\n\n@media (any-hover:hover) {\n\t.zaratan .breadcrumb.leckermaul a:hover {\n\t\tcolor: var(--c-notice-600, hsl(240, 32%, 53%));\n\t}\n}\n\n\/* .ma-home *\/\n.zaratan .breadcrumb.leckermaul .ma-home {\n\tvertical-align: top;\n}\n\n\/* .separator *\/\n.zaratan .breadcrumb.leckermaul li:nth-of-type(n+2)::before,\n.zaratan .breadcrumb.leckermaul.chevron-right li:nth-of-type(n+2)::before {\n\tcontent: \">\";\n\tcolor: var(--c-notice-600, hsl(240, 32%, 53%))\n}\n\n.zaratan .breadcrumb.leckermaul.slash li:nth-of-type(n+2)::before {\n\tcontent: \"\/\";\n}\n\n.zaratan .breadcrumb.leckermaul.trigon-bullet li:nth-of-type(n+2)::before {\n\tcontent: \"\u2023\";\n}\n<\/style>\n\n\n<nav class=\"breadcrumb leckermaul py-0.5r mx-auto\" aria-label=\"\u30d1\u30f3\u304f\u305a\u30ea\u30b9\u30c8\">\n  <ul class=\"breadcrumb-wrapper\">\n    <!-- \u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u3078\u306e\u30ea\u30f3\u30af\u3092\u8868\u793a -->\n    <li><a href=\"https:\/\/code-plus.jp\/gp\/\"><i><\/i>\u30c8\u30c3\u30d7<\/a><\/li>\n\n          <!-- \u56fa\u5b9a\u30da\u30fc\u30b8\uff08\u305d\u308c\u4ee5\u5916\uff09\uff1a \u5148\u7956\u30da\u30fc\u30b8\u540d\u3068\u3001\u73fe\u5728\u306e\u30da\u30fc\u30b8\u540d\u3092\u8868\u793a -->\n      <li><a href=\"https:\/\/code-plus.jp\/gp\/tools\/\">Web\u30c4\u30fc\u30eb\u4e00\u89a7\uff5cHTML\/CSS\u30fb\u6587\u66f8\u7de8\u96c6\u30fb\u753b\u50cf\u7de8\u96c6<\/a><\/li><li class=\"current_page_item\"><span aria-current=\"page\">\u753b\u50cfLanczos\u62e1\u5927\u30c4\u30fc\u30eb | AI\u3092\u4f7f\u308f\u305a Lanczos\u3067\u62e1\u5927<\/span><\/li>    <!-- \/\/\/if (is_page()) -->\n\n  <\/ul>\n<\/nav><\/div>\n  <\/header><!-- \/\/\/.inheader -->\n\n  <!-- \u0f3b\u00a7\ud835\udc12\ud835\udc04\ud835\udc02\ud835\udc13\ud835\udc08\ud835\udc0e\ud835\udc0d\u0f3a -->\n  <section class=\"sect-cnvtVkaA-Intro\">\n    <header class=\"section__inheader mx-auto\">\n      <div class=\"hgroup-wrapper mb-0.5r\">\n        <h1 class=\"hdg-page d-iblock w-auto fz-xxl mb-0.25pc\"><span>\u753b\u50cfLanczos\u62e1\u5927\u30c4\u30fc\u30eb | AI\u3092\u4f7f\u308f\u305a Lanczos\u3067\u62e1\u5927<\/span><\/h1>\n\n        <p class=\"rowgroup fl-right bdrs-0.25r mt-0.25r\">\n          <a class=\"badge is-outlined is-gray fz-xs\" href=\"#ch-Explanation\"><i class=\"icon mas ma-help\"><\/i>&nbsp;<span>\u4f7f\u3044\u65b9<\/span><\/a>\n          <a class=\"badge is-outlined is-gray fz-xs\" href=\"\/gp\/https:\/\/code-plus.jp\/gp\/tools\/imageext-converter\/\"><span>\u753b\u50cf\u5f62\u5f0f\u5909\u63db<\/span><\/a>\n          <a class=\"badge is-outlined is-gray fz-xs\" href=\"\/gp\/https:\/\/code-plus.jp\/gp\/tools\/imagetone-converter\/\"><span>\u30c8\u30fc\u30f3\u88dc\u6b63<\/span><\/a>\n          <a class=\"badge is-outlined is-gray fz-xs\" href=\"\/gp\/https:\/\/code-plus.jp\/gp\/tools\/imageupscale-converter\/\"><span>Lanczos\u62e1\u5927<\/span><\/a>\n        <\/p>\n\n        <p class=\"page-foreword fz-ss\">AI\u3092\u4f7f\u308f\u305a Lanczos \u88dc\u9593\u3067\u62e1\u5927\u3057\u3001\u30a8\u30c3\u30b8\u3092\u7de0\u3081\u3066\u304f\u3063\u304d\u308a\u4ed5\u4e0a\u3052\u307e\u3059\u3002<\/p>\n      <\/div><!-- \/\/\/.hgroup -->\n    <\/header><!-- \/\/\/.inheader -->\n  <\/section>\n\n\n  <!-- \u0f3b\u00a7\ud835\udc12\ud835\udc04\ud835\udc02\ud835\udc13\ud835\udc08\ud835\udc0e\ud835\udc0d\u0f3a -->\n  <hr id=\"ch-Converter\" anchor \/>\n  <section class=\"sect-cnvtVkaA-Converter contvis-auto\" style=\"contain-intrinsic-size:800px;\">\n    <div class=\"section__interior innerA fxd-row mx-auto\">\n      <figure class=\"section__leftlane\">\n        <div class=\"hgroup-wrapper\">\n          <h3 class=\"fz-rg hdg-section mb-0.25pc\"><span>\u25bc\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044<\/span><\/h3>\n        <\/div><!-- \/\/\/.hgroup -->\n\n        <div class=\"chest-wrapper relatived\">\n          <div id=\"endropArea\" class=\"endrop-area\" style=\"height:17.5pc;\">\n            <div class=\"endrop-inner\">\n              <i class=\"endrop-icon\"><\/i>\n              <p class=\"endrop-text\">\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0&amp;\u30c9\u30ed\u30c3\u30d7<\/p>\n              <small class=\"endrop-smock\">\u307e\u305f\u306f \u30af\u30ea\u30c3\u30af\u3057\u3066\u9078\u629e\uff08\u8907\u6570\u53ef\uff09<\/small>\n            <\/div>\n            <input type=\"file\" id=\"fileInput\" class=\"file-input\" accept=\"image\/jpeg,image\/png,image\/webp,image\/svg+xml\" multiple>\n          <\/div>\n          <ins id=\"decodedMessage\"><\/ins>\n        <\/div><!-- \/\/\/.chest -->\n\n        <!-- \u30aa\u30d7\u30b7\u30e7\u30f3 -->\n        <div class=\"colgroup w-full mt-1r\">\n          <h4 class=\"title is-outlined fz-sm\">\u5909\u63db\u5148\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/h4>\n          <label class=\"label is-outlined fz-sm\"><input type=\"checkbox\" class=\"checkbox\" id=\"convertToJpg\" checked>JPG \u306b\u5909\u63db<\/label>\n          <label class=\"label is-outlined fz-sm\"><input type=\"checkbox\" class=\"checkbox\" id=\"convertToPng\">PNG \u306b\u5909\u63db<\/label>\n          <label class=\"label is-outlined fz-sm\"><input type=\"checkbox\" class=\"checkbox\" id=\"convertToWebp\">WebP \u306b\u5909\u63db<\/label>\n        <\/div><!-- \/\/\/.colgroup -->\n\n        <div class=\"colgroup w-full mt-1r\">\n          <h4 class=\"title is-outlined fz-sm\">\u54c1\u8cea\u8a2d\u5b9a<\/h4>\n          <label class=\"label is-outlined fz-sm\">\n            <p class=\"fz-sm\">JPG \/ WebP \u54c1\u8cea\uff1a<\/p>\n            <select id=\"qualitySelect\" class=\"select w-10e\">\n              <option value=\"1.0\">100%\uff08\u6700\u9ad8\u753b\u8cea\uff09<\/option>\n              <option value=\"0.92\" selected>92%\uff08\u9ad8\u753b\u8cea\uff09<\/option>\n              <option value=\"0.85\">85%\uff08\u6a19\u6e96\uff09<\/option>\n              <option value=\"0.75\">75%\uff08\u3084\u3084\u5727\u7e2e\uff09<\/option>\n              <option value=\"0.60\">60%\uff08\u5727\u7e2e\u512a\u5148\uff09<\/option>\n            <\/select>\n          <\/label>\n          <label class=\"label is-outlined fz-sm\">\n            <p class=\"fz-sm\">JPG \u80cc\u666f\u8272\uff08\u900f\u904e\u753b\u50cf\u7528\uff09\uff1a<\/p>\n            <select id=\"jpgBgColor\" class=\"select w-10e\">\n              <option value=\"#ffffff\" selected>\u767d\uff08#ffffff\uff09<\/option>\n              <option value=\"#000000\">\u9ed2\uff08#000000\uff09<\/option>\n              <option value=\"#f5f5f5\">\u30e9\u30a4\u30c8\u30b0\u30ec\u30fc\uff08#f5f5f5\uff09<\/option>\n            <\/select>\n          <\/label>\n        <\/div><!-- \/\/\/.colgroup -->\n      <\/figure><!-- \/\/\/.leftlane -->\n\n      <figure class=\"section__centerlane\">\n        <aside class=\"sticky-sidebar fxd-column pc-center\" style=\"height:22rem;\">\n        <\/aside>\n      <\/figure><!-- \/\/\/.centerlane -->\n\n\n      <figure class=\"section__rightlane\">\n        <div class=\"chest-wrapper relatived\">\n          <h3 class=\"fz-rg hdg-section mb-0.25pc\"><span>\u25bc\u30d7\u30ec\u30d3\u30e5\u30fc<\/span><\/h3>\n          <div id=\"previewArea\" style=\"overflow-y:auto;background:var(--color-bg-input,#f7f8f9);border:1px solid var(--color-border,#ddd);border-radius:4px;padding:0;\">\n            <div id=\"previewPlaceholder\" style=\"height:17.5pc;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted,#aaa);font-size:14px;\">\n              \u753b\u50cf\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u3068\u30d7\u30ec\u30d3\u30e5\u30fc\u304c\u8868\u793a\u3055\u308c\u307e\u3059\n            <\/div>\n            <div id=\"previewList\" style=\"display:none;\"><\/div>\n          <\/div>\n          <ins id=\"encodedMessage\"><\/ins>\n        <\/div><!-- \/\/\/.chest -->\n\n        <div id=\"downloadControls\" style=\"display:none;\" class=\"colgroup w-full mt-1r\">\n          <div id=\"processingList\"><\/div>\n          <p class=\"ta-center mt-1r\">\n            <button type=\"button\" id=\"downloadBtn\" class=\"button is-solided is-primary\" onclick=\"startDownload()\">\u753b\u50cf\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/button>\n          <\/p>\n        <\/div>\n      <\/figure><!-- \/\/\/.rightlane -->\n    <\/div><!-- \/\/\/.interior.fxd-row -->\n  <\/section>\n\n\n  <!-- \u0f3b\u00a7\ud835\udc12\ud835\udc04\ud835\udc02\ud835\udc13\ud835\udc08\ud835\udc0e\ud835\udc0d\u0f3a -->\n  <hr id=\"ch-Explanation\" anchor \/>\n  <section class=\"sect-cnvtVkaA-Explanation pt-3r contvis-auto\" style=\"contain-intrinsic-size:800px;\">\n    <div class=\"section__interior innerA mx-auto scroll-fadeIn\">\n      <div class=\"box is-broad is-solided c-base-900\">\n        <h4 class=\"hdg-explanation fz-md mb-0.25pc\">\u4f7f\u3044\u65b9<\/h4>\n        <p class=\"fz-ss mb-1r\">\n          \u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0&amp;\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u3068\u3001\u5168\u753b\u50cf\u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u5404\u753b\u50cf\u306e\u30b9\u30e9\u30a4\u30c0\u30fc\u3067\u30c8\u30fc\u30f3\u3092\u500b\u5225\u306b\u8abf\u6574\u3057\u3001\u300c\u753b\u50cf\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u300d\u30dc\u30bf\u30f3\u3067\u4e00\u62ec\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002\n        <\/p>\n\n        <h5 class=\"fz-ss hdg-explanation mb-0.25pc mt-1r\">\ud83c\udf9b\ufe0f \u8abf\u6574\u3067\u304d\u308b\u9805\u76ee<\/h5>\n        <ul class=\"fz-ss mb-1r\">\n          <li><b class=\"fw-600\">\u660e\u5ea6\uff1a<\/b> \u753b\u50cf\u306e\u660e\u308b\u3055\u3092\u8abf\u6574\uff08\u6697\u3044\u5199\u771f\u3092\u660e\u308b\u304f\u3001\u660e\u308b\u3059\u304e\u308b\u5199\u771f\u3092\u6697\u304f\u3059\u308b\u7b49\uff09<\/li>\n          <li><b class=\"fw-600\">\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\uff1a<\/b> \u660e\u6697\u5dee\u3092\u8abf\u6574\uff0850%\u301c200%\uff09\u3002\u4e0a\u3052\u308b\u3068\u30e1\u30ea\u30cf\u30ea\u304c\u51fa\u308b<\/li>\n          <li><b class=\"fw-600\">\u8272\u8abf\uff08Hue\uff09\uff1a<\/b> \u8272\u5408\u3044\u3092 -180\u00b0\u301c+180\u00b0 \u3067\u30b7\u30d5\u30c8\u3002\u30db\u30ef\u30a4\u30c8\u30d0\u30e9\u30f3\u30b9\u306e\u5fae\u8abf\u6574\u306b<\/li>\n          <li><b class=\"fw-600\">\u5f69\u5ea6\uff1a<\/b> \u9bae\u3084\u304b\u3055\u3092\u8abf\u6574\uff080%\u3067\u30e2\u30ce\u30af\u30ed\u3001200%\u3067\u9bae\u3084\u304b\u306b\uff09<\/li>\n          <li><b class=\"fw-600\">\u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\uff1a<\/b> \u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\u3092\u5206\u6790\u3057\u3001\u6700\u6697\u30fb\u6700\u660e\u90e8\u3092\u81ea\u52d5\u3067\u30b9\u30c8\u30ec\u30c3\u30c1\u3002Photoshop\u306e\u300c\u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u300d\u3068\u540c\u7b49\u306e\u51e6\u7406<\/li>\n        <\/ul>\n\n        <h5 class=\"fz-ss hdg-explanation mb-0.25pc\">\ud83c\udfaf \u6d3b\u7528\u4f8b<\/h5>\n        <ul class=\"fz-ss mb-1r\">\n          <li><b class=\"fw-600\">\u7269\u4ef6\u5199\u771f\u306e\u7d71\u4e00\uff1a<\/b> \u5929\u5019\u3084\u6642\u9593\u5e2f\u3067\u660e\u308b\u3055\u304c\u30d0\u30e9\u30d0\u30e9\u306a\u5199\u771f\u3092\u3001Photoshop\u3092\u958b\u304b\u305a\u306b\u63c3\u3048\u308b<\/li>\n          <li><b class=\"fw-600\">\u66c7\u5929\u5199\u771f\u306e\u88dc\u6b63\uff1a<\/b> \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63 + \u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u3092\u4e0a\u3052\u3066\u3001\u304f\u3059\u3093\u3060\u5199\u771f\u3092\u304f\u3063\u304d\u308a\u3068<\/li>\n          <li><b class=\"fw-600\">\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u4f5c\u6210\uff1a<\/b> \u8907\u6570\u306e\u4f5c\u54c1\u5199\u771f\u306e\u30c8\u30fc\u30f3\u3092\u7d71\u4e00\u3057\u3066\u3001\u4e00\u8cab\u3057\u305f\u898b\u305f\u76ee\u306b<\/li>\n          <li><b class=\"fw-600\">SNS\u6295\u7a3f\u7528\uff1a<\/b> \u5f69\u5ea6\u3092\u4e0a\u3052\u3066\u9bae\u3084\u304b\u306b\u3001\u307e\u305f\u306f\u30e2\u30ce\u30af\u30ed\u5316\u3057\u3066\u96f0\u56f2\u6c17\u306e\u3042\u308b\u753b\u50cf\u306b<\/li>\n        <\/ul>\n\n        <h5 class=\"fz-ss hdg-explanation mb-0.25pc\">\u2699\ufe0f \u51fa\u529b\u8a2d\u5b9a<\/h5>\n        <ul class=\"fz-ss mb-1r\">\n          <li><b class=\"fw-600\">\u5bfe\u5fdc\u5165\u529b\u5f62\u5f0f\uff1a<\/b> JPG \/ PNG \/ WebP \/ SVG<\/li>\n          <li><b class=\"fw-600\">\u5bfe\u5fdc\u51fa\u529b\u5f62\u5f0f\uff1a<\/b> JPG \/ PNG \/ WebP\uff08\u8907\u6570\u540c\u6642\u9078\u629e\u53ef\uff09<\/li>\n          <li><b class=\"fw-600\">\u54c1\u8cea\u8a2d\u5b9a\uff1a<\/b> JPG \/ WebP \u306e\u5727\u7e2e\u54c1\u8cea\u30925\u6bb5\u968e\u3067\u9078\u629e\u53ef\u80fd<\/li>\n          <li><b class=\"fw-600\">\u900f\u904e\u753b\u50cf\uff1a<\/b> PNG \u306e\u900f\u904e\u90e8\u5206\u306fJPG\u5909\u63db\u6642\u306b\u6307\u5b9a\u3057\u305f\u80cc\u666f\u8272\u3067\u5857\u308a\u3064\u3076\u3057<\/li>\n        <\/ul>\n\n        <h5 class=\"fz-ss hdg-explanation mb-0.25pc\">\u26a0\ufe0f \u6ce8\u610f\u4e8b\u9805<\/h5>\n        <ul class=\"fz-ss\">\n          <li><b class=\"fw-600\">\u30d6\u30e9\u30a6\u30b6\u51e6\u7406\uff1a<\/b> \u3059\u3079\u3066\u306e\u51e6\u7406\u306f\u30d6\u30e9\u30a6\u30b6\u5185\u3067\u5b8c\u7d50\u3057\u307e\u3059\uff08\u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u307e\u305b\u3093\uff09<\/li>\n          <li><b class=\"fw-600\">\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30d7\u30ec\u30d3\u30e5\u30fc\uff1a<\/b> \u30b9\u30e9\u30a4\u30c0\u30fc\u64cd\u4f5c\u3067\u5373\u5ea7\u306b\u30d7\u30ec\u30d3\u30e5\u30fc\u304c\u66f4\u65b0\u3055\u308c\u307e\u3059<\/li>\n          <li><b class=\"fw-600\">\u975e\u7834\u58ca\u7de8\u96c6\uff1a<\/b> \u5143\u753b\u50cf\u306f\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002\u300c\u30ea\u30bb\u30c3\u30c8\u300d\u3067\u521d\u671f\u72b6\u614b\u306b\u623b\u305b\u307e\u3059<\/li>\n        <\/ul>\n      <\/div>\n    <\/div><!-- \/\/\/.interior -->\n  <\/section><!-- \/\/\/.section -->\n\n\n  <!-- \u0f3b\u00a7\ud835\udc12\ud835\udc04\ud835\udc02\ud835\udc13\ud835\udc08\ud835\udc0e\ud835\udc0d\u0f3a -->\n  <hr id=\"ch-Relation\" anchor \/>\n  <section class=\"sect-cnvtVkaA-Relation\" style=\"contain-intrinsic-size:1000px;\">\n    <div class=\"section__interior innerA mx-auto scroll-fadeIn\">\n      <div class=\"hgroup-wrapper hgroupA mb-0.5pc\">\n        <h5 class=\"hdg-relation fz-rg\"><span>\u95a2\u9023\u30c4\u30fc\u30eb<\/span><\/h5>\n      <\/div><!-- \/\/\/.hgroup -->\n\n      <ul class=\"shelf-wrapper_pc\" data-cols_pc=\"2\">\n        <li class=\"slide\">\n          <a href=\"https:\/\/code-plus.jp\/gp\/tools\/imageext-converter\/\" class=\"linkbox my-1.5r\">\n            <h4 class=\"linkbox-title fz-md\">\u753b\u50cf\u5f62\u5f0f\u5909\u63db\u30c4\u30fc\u30eb | JPG \/ PNG \/ WebP \/ SVG \u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u6307\u5b9a\u3057\u305f\u5f62\u5f0f\u306b\u4e00\u62ec\u5909\u63db<\/h4>\n            <picture class=\"linkbox-thumbnail\">\n              <img decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/fda82bfb-a6b5-4687-a4d2-3eb6c63678c9.jpeg?ver=20261027192354\" alt=\"\u753b\u50cf\u5f62\u5f0f\u5909\u63db\u30c4\u30fc\u30eb | JPG \/ PNG \/ WebP \/ SVG \u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u6307\u5b9a\u3057\u305f\u5f62\u5f0f\u306b\u4e00\u62ec\u5909\u63db\" loading=\"lazy\" \/>\n            <\/picture>\n            <span class=\"linkbox-excerpt\">JPG \/ PNG \/ WebP \/ SVG \u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0&amp;\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u3060\u3051\u3067\u3001\u6307\u5b9a\u3057\u305f\u5f62\u5f0f\u306b\u4e00\u62ec\u5909\u63db\u3057\u3066\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3002\n            <\/span>\n          <\/a>\n        <\/li>\n        <li class=\"slide\">\n          <a href=\"https:\/\/code-plus.jp\/gp\/tools\/imagetone-converter\/\" class=\"linkbox my-1.5r\">\n            <h4 class=\"linkbox-title fz-md\">\u753b\u50cf\u30c8\u30fc\u30f3\u88dc\u6b63\u30c4\u30fc\u30eb | \u660e\u5ea6\u30fb\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u30fb\u8272\u8abf\u30fb\u5f69\u5ea6\u3092\u4e00\u62ec\u8abf\u6574<\/h4>\n            <picture class=\"linkbox-thumbnail\">\n              <img decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/26b03f372b188caaeb4d77ea5a76d0b4.jpg?ver=20261027192354\" alt=\"\u753b\u50cf\u30c8\u30fc\u30f3\u88dc\u6b63\u30c4\u30fc\u30eb | \u660e\u5ea6\u30fb\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u30fb\u8272\u8abf\u30fb\u5f69\u5ea6\u3092\u4e00\u62ec\u8abf\u6574\" loading=\"lazy\" \/>\n            <\/picture>\n            <span class=\"linkbox-excerpt\">\u8907\u6570\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0&amp;\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u3060\u3051\u3067\u3001\u660e\u5ea6\u30fb\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u30fb\u8272\u8abf\u30fb\u5f69\u5ea6\u3092\u500b\u5225\u306b\u30d7\u30ec\u30d3\u30e5\u30fc\u8abf\u6574\u3002\u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u306b\u3082\u5bfe\u5fdc\u3002JPG \/ PNG \/ WebP \u5f62\u5f0f\u3067\u4e00\u62ec\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3002\n            <\/span>\n          <\/a>\n        <\/li>\n      <\/ul><!-- \/\/\/.shelf -->\n    <\/div><!-- \/\/\/.interior -->\n  <\/section><!-- \/\/\/.section -->\n\n\n\n  <!-- \u0f3b.mediano\uff08\u4f59\u767d\u8abf\u6574\uff1apage\u4e0b\uff09\u0f3a -->\n  <hr class=\"spacer-mediano\" \/>\n\n<\/div><!-- \/\/\/\u25b2.page  -->\n\n\n<script>\n  let storedImages = []; \/\/ { file, img, brightness, brightnessMultiplier, hue, saturation, contrast, autoToneLevels }\n\n  function startDownload() {\n    if (window._imageExtApp) window._imageExtApp.doDownload();\n  }\n\n  document.addEventListener('DOMContentLoaded', function () {\n    const endropArea = document.getElementById('endropArea');\n    const fileInput = document.getElementById('fileInput');\n    const previewPlaceholder = document.getElementById('previewPlaceholder');\n    const previewList = document.getElementById('previewList');\n    const downloadControls = document.getElementById('downloadControls');\n    const processingList = document.getElementById('processingList');\n    const encodedMessage = document.getElementById('encodedMessage');\n\n    if (!endropArea) return;\n\n    fileInput.style.display = 'none';\n    endropArea.style.cursor = 'pointer';\n\n    endropArea.addEventListener('click', function () { fileInput.click(); });\n    fileInput.addEventListener('change', function (e) {\n      if (e.target.files.length > 0) handleFiles(e.target.files);\n      fileInput.value = '';\n    });\n\n    \/\/ \u30c9\u30e9\u30c3\u30b0&\u30c9\u30ed\u30c3\u30d7\n    endropArea.addEventListener('dragover', function (e) { e.preventDefault(); e.stopPropagation(); this.style.backgroundColor = '#f0f0f0'; this.style.borderColor = '#999'; });\n    endropArea.addEventListener('dragleave', function (e) { e.preventDefault(); e.stopPropagation(); this.style.backgroundColor = ''; this.style.borderColor = ''; });\n    endropArea.addEventListener('dragenter', function (e) { e.preventDefault(); e.stopPropagation(); });\n    endropArea.addEventListener('drop', function (e) {\n      e.preventDefault(); e.stopPropagation();\n      this.style.backgroundColor = ''; this.style.borderColor = '';\n      if (e.dataTransfer.files.length > 0) handleFiles(e.dataTransfer.files);\n    });\n\n\n    \/\/ ====================================\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u51e6\u7406\uff08\u30c9\u30ed\u30c3\u30d7\u6642\uff1a\u5168\u753b\u50cf\u30d7\u30ec\u30d3\u30e5\u30fc\u8868\u793a\uff09\n    \/\/ ====================================\n\n    function handleFiles(files) {\n      const imageFiles = Array.from(files).filter(isImageFile);\n      if (imageFiles.length === 0) {\n        alert('\u5bfe\u5fdc\u3059\u308b\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\uff08JPG \/ PNG \/ WebP \/ SVG\uff09\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044\u3002');\n        return;\n      }\n\n      storedImages = [];\n      previewList.innerHTML = '';\n      processingList.innerHTML = '';\n\n      const dropInner = endropArea.querySelector('.endrop-inner');\n      dropInner.innerHTML =\n        '<div style=\"padding:20px;\">' +\n        '<p style=\"color: var(--c-caution, hsl(13, 99%, 43%));;font-weight:bold;\">' + imageFiles.length + '\u500b\u306e\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3057\u305f<\/p>' +\n        '<small style=\"color:#666;\">\u30d7\u30ec\u30d3\u30e5\u30fc\u3092\u78ba\u8a8d\u3057\u3066\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044<\/small><\/div>';\n\n      previewPlaceholder.style.display = 'none';\n      previewList.style.display = '';\n      downloadControls.style.display = '';\n\n      \/\/ \u5404\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u3093\u3067\u30d7\u30ec\u30d3\u30e5\u30fc\u30ab\u30fc\u30c9\u3092\u4f5c\u6210\n      imageFiles.forEach(function (file, index) {\n        loadImageFromFile(file).then(function (img) {\n          const brightness = calculateBrightness(img);\n          storedImages[index] = { file: file, img: img, brightness: brightness, brightnessMultiplier: 1.0, hue: 0, saturation: 1.0, contrast: 1.0, autoToneLevels: null };\n          createPreviewCard(index, file.name, img, brightness);\n        }).catch(function (err) {\n          console.error('\u8aad\u307f\u8fbc\u307f\u30a8\u30e9\u30fc:', err);\n          storedImages[index] = null;\n        });\n      });\n    }\n\n\n    \/\/ ====================================\n    \/\/ \u30d7\u30ec\u30d3\u30e5\u30fc\u30ab\u30fc\u30c9\u4f5c\u6210\uff08\u753b\u50cf\u3054\u3068\uff09\n    \/\/ ====================================\n\n    function createPreviewCard(index, fileName, img, brightness) {\n      const card = document.createElement('div');\n      card.style.cssText = 'padding:12px;border-bottom:1px solid #e0e0e0;';\n      card.id = 'previewCard_' + index;\n\n      \/\/ \u30d5\u30a1\u30a4\u30eb\u540d\n      const nameEl = document.createElement('p');\n      nameEl.style.cssText = 'font-size:12px;font-weight:500;color:#555;margin:0 0 4px;word-break:break-all;';\n      nameEl.textContent = fileName;\n      card.appendChild(nameEl);\n\n      \/\/ Canvas\n      const canvas = document.createElement('canvas');\n      canvas.id = 'canvas_' + index;\n      canvas.style.cssText = 'max-width:100%;display:block;border-radius:3px;';\n      card.appendChild(canvas);\n\n      \/\/ \u73fe\u5728\u306e\u8abf\u6574\u5024\u3092\u4fdd\u6301\n      let currentBrightness = 1.0;\n      let currentHue = 0;\n      let currentSaturation = 1.0;\n      let currentContrast = 1.0;\n      let autoToneLevels = null;\n\n      \/\/ \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u306e\u30ec\u30d9\u30eb\u5024\u3092\u4e8b\u524d\u8a08\u7b97\n      const toneLevels = calculateAutoToneLevels(img);\n\n      function updatePreview() {\n        drawCanvas(canvas, img, currentBrightness, currentHue, currentSaturation, currentContrast, autoToneLevels);\n        if (storedImages[index]) {\n          storedImages[index].brightnessMultiplier = currentBrightness;\n          storedImages[index].hue = currentHue;\n          storedImages[index].saturation = currentSaturation;\n          storedImages[index].contrast = currentContrast;\n          storedImages[index].autoToneLevels = autoToneLevels;\n        }\n      }\n\n      \/\/ --- \u660e\u5ea6\u30b9\u30e9\u30a4\u30c0\u30fc ---\n      var bRow = createSliderRow('\u660e\u5ea6', Math.round(brightness), 40, 220, Math.round(brightness), function (val) {\n        currentBrightness = brightness > 0 ? val \/ brightness : 1;\n        updatePreview();\n      });\n      card.appendChild(bRow.row);\n\n      \/\/ --- \u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u30b9\u30e9\u30a4\u30c0\u30fc ---\n      var cRow = createSliderRow('\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8', 100, 50, 200, 100, function (val) {\n        currentContrast = val \/ 100;\n        updatePreview();\n      });\n      card.appendChild(cRow.row);\n\n      \/\/ --- \u8272\u8abf\uff08Hue\uff09\u30b9\u30e9\u30a4\u30c0\u30fc ---\n      var hRow = createSliderRow('\u8272\u8abf', 0, -180, 180, 0, function (val) {\n        currentHue = val;\n        updatePreview();\n      });\n      card.appendChild(hRow.row);\n\n      \/\/ --- \u5f69\u5ea6\u30b9\u30e9\u30a4\u30c0\u30fc ---\n      var sRow = createSliderRow('\u5f69\u5ea6', 100, 0, 200, 100, function (val) {\n        currentSaturation = val \/ 100;\n        updatePreview();\n      });\n      card.appendChild(sRow.row);\n\n      \/\/ --- \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u30c1\u30a7\u30c3\u30af\u30dc\u30c3\u30af\u30b9 + \u30ea\u30bb\u30c3\u30c8 ---\n      const optionRow = document.createElement('div');\n      optionRow.style.cssText = 'display:flex;align-items:center;justify-content:space-between;margin-top:6px;font-size:12px;color:#666;';\n\n      const autoToneLabel = document.createElement('label');\n      autoToneLabel.style.cssText = 'display:flex;align-items:center;gap:4px;cursor:pointer;';\n      const autoToneCheck = document.createElement('input');\n      autoToneCheck.type = 'checkbox';\n      autoToneCheck.style.cssText = 'margin:0;';\n      autoToneLabel.appendChild(autoToneCheck);\n      const autoToneText = document.createElement('span');\n      autoToneText.textContent = '\u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63';\n      autoToneLabel.appendChild(autoToneText);\n      optionRow.appendChild(autoToneLabel);\n\n      const resetBtn = document.createElement('a');\n      resetBtn.textContent = '\u30ea\u30bb\u30c3\u30c8';\n      resetBtn.href = 'javascript:void(0);';\n      resetBtn.style.cssText = 'font-size:11px;color:#999;text-decoration:underline;';\n      optionRow.appendChild(resetBtn);\n\n      card.appendChild(optionRow);\n      previewList.appendChild(card);\n\n      \/\/ \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u30c1\u30a7\u30c3\u30af\u30dc\u30c3\u30af\u30b9\n      autoToneCheck.addEventListener('change', function () {\n        autoToneLevels = this.checked ? toneLevels : null;\n        updatePreview();\n      });\n\n      \/\/ \u30ea\u30bb\u30c3\u30c8\u30dc\u30bf\u30f3\n      resetBtn.addEventListener('click', function () {\n        bRow.reset(); cRow.reset(); hRow.reset(); sRow.reset();\n        autoToneCheck.checked = false;\n        currentBrightness = 1.0; currentHue = 0; currentSaturation = 1.0; currentContrast = 1.0;\n        autoToneLevels = null;\n        updatePreview();\n      });\n\n      \/\/ \u521d\u56de\u63cf\u753b\n      drawCanvas(canvas, img, 1.0, 0, 1.0, 1.0, null);\n    }\n\n    \/\/ \u30b9\u30e9\u30a4\u30c0\u30fc\u884c\u3092\u751f\u6210\u3059\u308b\u30d8\u30eb\u30d1\u30fc\n    function createSliderRow(labelText, initialDisplay, min, max, initialValue, onChange) {\n      const row = document.createElement('div');\n      row.style.cssText = 'display:flex;align-items:center;gap:6px;margin-top:4px;font-size:12px;color:#666;';\n\n      const label = document.createElement('span');\n      label.textContent = labelText + ':';\n      label.style.cssText = 'min-width:5em;';\n      row.appendChild(label);\n\n      const display = document.createElement('b');\n      display.textContent = initialDisplay;\n      display.style.cssText = 'min-width:2.5em;text-align:right;';\n      row.appendChild(display);\n\n      const slider = document.createElement('input');\n      slider.type = 'range';\n      slider.min = min;\n      slider.max = max;\n      slider.value = initialValue;\n      slider.style.cssText = 'flex:1;';\n      row.appendChild(slider);\n\n      slider.addEventListener('input', function () {\n        display.textContent = this.value;\n        onChange(parseFloat(this.value));\n      });\n\n      return {\n        row: row,\n        reset: function () {\n          slider.value = initialValue;\n          display.textContent = initialDisplay;\n        }\n      };\n    }\n\n    function drawCanvas(canvas, img, brightnessMultiplier, hueDeg, saturateMultiplier, contrastMultiplier, autoToneLevels) {\n      const maxW = 500;\n      const scale = Math.min(1, maxW \/ img.naturalWidth);\n      const w = Math.round(img.naturalWidth * scale);\n      const h = Math.round(img.naturalHeight * scale);\n      canvas.width = w;\n      canvas.height = h;\n      const ctx = canvas.getContext('2d');\n\n      \/\/ \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\u304cON\u306e\u5834\u5408\uff1a\u307e\u305a\u5143\u753b\u50cf\u3092\u63cf\u753b \u2192 \u30d4\u30af\u30bb\u30eb\u64cd\u4f5c \u2192 CSS filter\u3092\u91cd\u306d\u304c\u3051\n      if (autoToneLevels) {\n        \/\/ 1. \u5143\u753b\u50cf\u3092\u63cf\u753b\n        ctx.drawImage(img, 0, 0, w, h);\n        \/\/ 2. \u30d4\u30af\u30bb\u30eb\u64cd\u4f5c\u3067\u30c8\u30fc\u30f3\u88dc\u6b63\n        applyAutoTone(ctx, w, h, autoToneLevels);\n        \/\/ 3. \u88dc\u6b63\u6e08\u307f\u753b\u50cf\u3092temp\u306b\u4fdd\u5b58\u3057\u3001CSS filter\u3067\u4e0a\u66f8\u304d\n        var tempCanvas = document.createElement('canvas');\n        tempCanvas.width = w; tempCanvas.height = h;\n        tempCanvas.getContext('2d').drawImage(canvas, 0, 0);\n        ctx.clearRect(0, 0, w, h);\n        ctx.filter = 'brightness(' + brightnessMultiplier + ') contrast(' + contrastMultiplier + ') hue-rotate(' + hueDeg + 'deg) saturate(' + saturateMultiplier + ')';\n        ctx.drawImage(tempCanvas, 0, 0);\n        ctx.filter = 'none';\n      } else {\n        ctx.filter = 'brightness(' + brightnessMultiplier + ') contrast(' + contrastMultiplier + ') hue-rotate(' + hueDeg + 'deg) saturate(' + saturateMultiplier + ')';\n        ctx.drawImage(img, 0, 0, w, h);\n        ctx.filter = 'none';\n      }\n    }\n\n\n    \/\/ ====================================\n    \/\/ \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\n    \/\/ ====================================\n\n    \/\/ \u753b\u50cf\u306e\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\u304b\u3089\u88dc\u6b63\u30ec\u30d9\u30eb\u5024\u3092\u4e8b\u524d\u8a08\u7b97\n    function calculateAutoToneLevels(img) {\n      const canvas = document.createElement('canvas');\n      const sampleSize = 300;\n      const scale = Math.min(1, sampleSize \/ Math.max(img.naturalWidth, img.naturalHeight));\n      canvas.width = Math.round(img.naturalWidth * scale);\n      canvas.height = Math.round(img.naturalHeight * scale);\n      const ctx = canvas.getContext('2d');\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height);\n      const data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;\n      const pixelCount = data.length \/ 4;\n\n      \/\/ R, G, B \u5404\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\n      var histR = new Array(256).fill(0);\n      var histG = new Array(256).fill(0);\n      var histB = new Array(256).fill(0);\n\n      for (var i = 0; i < data.length; i += 4) {\n        histR[data[i]]++;\n        histG[data[i + 1]]++;\n        histB[data[i + 2]]++;\n      }\n\n      \/\/ \u4e0a\u4e0b0.5%\u3092\u30af\u30ea\u30c3\u30d7\u3057\u3066\u6700\u6697\u30fb\u6700\u660e\u3092\u6c7a\u5b9a\n      var clipRatio = 0.005;\n      var clipCount = Math.floor(pixelCount * clipRatio);\n\n      function findLevels(hist) {\n        var low = 0, high = 255;\n        var sum = 0;\n        for (var v = 0; v < 256; v++) { sum += hist[v]; if (sum > clipCount) { low = v; break; } }\n        sum = 0;\n        for (var v = 255; v >= 0; v--) { sum += hist[v]; if (sum > clipCount) { high = v; break; } }\n        if (high <= low) high = low + 1;\n        return { low: low, high: high };\n      }\n\n      return {\n        r: findLevels(histR),\n        g: findLevels(histG),\n        b: findLevels(histB)\n      };\n    }\n\n    \/\/ \u30d4\u30af\u30bb\u30eb\u64cd\u4f5c\u3067\u30c8\u30fc\u30f3\u88dc\u6b63\u3092\u9069\u7528\n    function applyAutoTone(ctx, w, h, levels) {\n      var imageData = ctx.getImageData(0, 0, w, h);\n      var data = imageData.data;\n\n      \/\/ \u5404\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\n      var lutR = buildLUT(levels.r.low, levels.r.high);\n      var lutG = buildLUT(levels.g.low, levels.g.high);\n      var lutB = buildLUT(levels.b.low, levels.b.high);\n\n      for (var i = 0; i < data.length; i += 4) {\n        data[i] = lutR[data[i]];\n        data[i + 1] = lutG[data[i + 1]];\n        data[i + 2] = lutB[data[i + 2]];\n      }\n\n      ctx.putImageData(imageData, 0, 0);\n    }\n\n    function buildLUT(low, high) {\n      var lut = new Uint8Array(256);\n      var range = high - low;\n      for (var i = 0; i < 256; i++) {\n        lut[i] = Math.max(0, Math.min(255, Math.round((i - low) \/ range * 255)));\n      }\n      return lut;\n    }\n\n\n    \/\/ ====================================\n    \/\/ \u660e\u5ea6\u8a08\u7b97\n    \/\/ ====================================\n\n    function calculateBrightness(img) {\n      const canvas = document.createElement('canvas');\n      const sampleSize = 200;\n      const scale = Math.min(1, sampleSize \/ Math.max(img.naturalWidth, img.naturalHeight));\n      canvas.width = Math.round(img.naturalWidth * scale);\n      canvas.height = Math.round(img.naturalHeight * scale);\n      const ctx = canvas.getContext('2d');\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height);\n      const data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;\n      let total = 0;\n      const pixelCount = data.length \/ 4;\n      for (let i = 0; i < data.length; i += 4) {\n        total += data[i] * 0.2126 + data[i + 1] * 0.7152 + data[i + 2] * 0.0722;\n      }\n      return total \/ pixelCount;\n    }\n\n\n    \/\/ ====================================\n    \/\/ \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u5b9f\u884c\n    \/\/ ====================================\n\n    window._imageExtApp = {\n      doDownload: function () {\n        const valid = storedImages.filter(function (s) { return s !== null; });\n        if (valid.length === 0) { alert('\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044\u3002'); return; }\n\n        const formats = [];\n        if (document.getElementById('convertToJpg').checked) formats.push('jpg');\n        if (document.getElementById('convertToPng').checked) formats.push('png');\n        if (document.getElementById('convertToWebp').checked) formats.push('webp');\n        if (formats.length === 0) { alert('\u5909\u63db\u5148\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30921\u3064\u4ee5\u4e0a\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002'); return; }\n\n        const quality = parseFloat(document.getElementById('qualitySelect').value);\n        const jpgBgColor = document.getElementById('jpgBgColor').value;\n\n        \/\/ \u30bf\u30b9\u30af\u4f5c\u6210\n        const tasks = [];\n        storedImages.forEach(function (item) {\n          if (!item) return;\n          const ext = getExtension(item.file.name);\n          const hasChange = item.brightnessMultiplier !== 1.0 || item.hue !== 0 || item.saturation !== 1.0 || item.contrast !== 1.0 || item.autoToneLevels !== null;\n          formats.forEach(function (format) {\n            if (isSameFormat(ext, format) && !hasChange) return;\n            tasks.push({ file: item.file, format: format, brightnessMultiplier: item.brightnessMultiplier, hue: item.hue, saturation: item.saturation, contrast: item.contrast, autoToneLevels: item.autoToneLevels });\n          });\n        });\n\n        if (tasks.length === 0) { showMessage('\u5909\u63db\u5bfe\u8c61\u304c\u3042\u308a\u307e\u305b\u3093\u3002', true); return; }\n\n        processingList.innerHTML = '';\n        let completed = 0, errors = 0;\n        const downloadQueue = [], fileItems = [];\n\n        tasks.forEach(function (task, index) {\n          const adjustInfo = [];\n          if (task.brightnessMultiplier !== 1) adjustInfo.push('B\u00d7' + task.brightnessMultiplier.toFixed(2));\n          if (task.contrast !== 1) adjustInfo.push('C\u00d7' + task.contrast.toFixed(2));\n          if (task.hue !== 0) adjustInfo.push('H' + (task.hue > 0 ? '+' : '') + task.hue + '\u00b0');\n          if (task.saturation !== 1) adjustInfo.push('S\u00d7' + task.saturation.toFixed(2));\n          if (task.autoToneLevels) adjustInfo.push('AutoTone');\n          const label = task.file.name + ' \u2192 ' + task.format.toUpperCase() +\n            (adjustInfo.length > 0 ? ' (' + adjustInfo.join(' ') + ')' : '');\n          fileItems[index] = addFileItem(label, 'processing');\n\n          convertImageWithHSL(task.file, task.format, quality, jpgBgColor, task.brightnessMultiplier, task.hue, task.saturation, task.contrast, task.autoToneLevels)\n            .then(function (result) {\n              downloadQueue[index] = result;\n              updateFileItem(fileItems[index], 'completed', formatFileSize(result.blob.size));\n              completed++; checkDone();\n            }).catch(function (err) {\n              console.error('\u5909\u63db\u30a8\u30e9\u30fc:', err);\n              downloadQueue[index] = null;\n              updateFileItem(fileItems[index], 'error', '');\n              errors++; checkDone();\n            });\n        });\n\n        function checkDone() {\n          if (completed + errors !== tasks.length) return;\n          var validItems = downloadQueue.filter(function (item) { return item !== null; });\n          sequentialDownload(validItems, 0, function () {\n            showMessage(completed + '\u500b\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5909\u63db\u3057\u307e\u3057\u305f' + (errors > 0 ? '\uff08' + errors + '\u500b\u30a8\u30e9\u30fc\uff09' : ''), errors === 0);\n          });\n        }\n      }\n    };\n\n\n    \/\/ ====================================\n    \/\/ \u753b\u50cf\u5909\u63db\uff08HSL\u8abf\u6574\u4ed8\u304d\uff09\n    \/\/ ====================================\n\n    function convertImageWithHSL(file, format, quality, jpgBgColor, brightnessMultiplier, hue, saturation, contrast, autoToneLevels) {\n      return new Promise(function (resolve, reject) {\n        loadImageFromFile(file).then(function (img) {\n          const canvas = document.createElement('canvas');\n          canvas.width = img.naturalWidth;\n          canvas.height = img.naturalHeight;\n          const ctx = canvas.getContext('2d');\n          if (format === 'jpg') { ctx.fillStyle = jpgBgColor; ctx.fillRect(0, 0, canvas.width, canvas.height); }\n\n          var filterStr = 'brightness(' + brightnessMultiplier + ') contrast(' + contrast + ') hue-rotate(' + hue + 'deg) saturate(' + saturation + ')';\n\n          if (autoToneLevels) {\n            \/\/ \u81ea\u52d5\u30c8\u30fc\u30f3\u88dc\u6b63\uff1a\u307e\u305a\u5143\u753b\u50cf\u63cf\u753b \u2192 \u30d4\u30af\u30bb\u30eb\u64cd\u4f5c \u2192 CSS filter\u91cd\u306d\u304c\u3051\n            ctx.drawImage(img, 0, 0);\n            applyAutoTone(ctx, canvas.width, canvas.height, autoToneLevels);\n            var tempCanvas = document.createElement('canvas');\n            tempCanvas.width = canvas.width; tempCanvas.height = canvas.height;\n            tempCanvas.getContext('2d').drawImage(canvas, 0, 0);\n            ctx.clearRect(0, 0, canvas.width, canvas.height);\n            if (format === 'jpg') { ctx.fillStyle = jpgBgColor; ctx.fillRect(0, 0, canvas.width, canvas.height); }\n            ctx.filter = filterStr;\n            ctx.drawImage(tempCanvas, 0, 0);\n          } else {\n            ctx.filter = filterStr;\n            ctx.drawImage(img, 0, 0);\n          }\n          ctx.filter = 'none';\n\n          const mimeType = getMimeType(format);\n          const baseName = file.name.replace(\/\\.[^.]+$\/, '');\n          const filename = baseName + '.' + format;\n          const useQuality = (format === 'jpg' || format === 'webp') ? quality : undefined;\n          canvas.toBlob(function (blob) {\n            blob ? resolve({ blob: blob, filename: filename }) : reject(new Error('toBlob failed'));\n          }, mimeType, useQuality);\n        }).catch(reject);\n      });\n    }\n\n    function loadImageFromFile(file) {\n      return new Promise(function (resolve, reject) {\n        const reader = new FileReader();\n        reader.onload = function (e) {\n          const img = new Image();\n          img.onload = function () { resolve(img); };\n          img.onerror = function () { reject(new Error('\u753b\u50cf\u8aad\u307f\u8fbc\u307f\u5931\u6557')); };\n          if (file.type === 'image\/svg+xml') {\n            img.src = URL.createObjectURL(new Blob([e.target.result], { type: 'image\/svg+xml' }));\n          } else { img.src = e.target.result; }\n        };\n        reader.onerror = function () { reject(new Error('\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u5931\u6557')); };\n        file.type === 'image\/svg+xml' ? reader.readAsText(file) : reader.readAsDataURL(file);\n      });\n    }\n\n    function sequentialDownload(items, index, callback) {\n      if (index >= items.length) { if (callback) callback(); return; }\n      downloadBlob(items[index].blob, items[index].filename);\n      setTimeout(function () { sequentialDownload(items, index + 1, callback); }, 300);\n    }\n\n    \/\/ \u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\n    function isImageFile(f) { return \/^image\\\/(jpeg|png|webp|svg\\+xml)$\/.test(f.type) || \/\\.(jpe?g|png|webp|svg)$\/i.test(f.name); }\n    function getExtension(fn) { return fn.replace(\/.*\\.\/, '').toLowerCase(); }\n    function isSameFormat(ext, fmt) {\n      if (fmt === 'jpg' && (ext === 'jpg' || ext === 'jpeg')) return true;\n      if (fmt === 'png' && ext === 'png') return true;\n      if (fmt === 'webp' && ext === 'webp') return true;\n      return false;\n    }\n    function getMimeType(fmt) { return fmt === 'jpg' ? 'image\/jpeg' : fmt === 'webp' ? 'image\/webp' : 'image\/png'; }\n    function formatFileSize(b) { return b < 1024 ? b + ' B' : b < 1048576 ? (b \/ 1024).toFixed(1) + ' KB' : (b \/ 1048576).toFixed(1) + ' MB'; }\n\n    \/\/ UI\n    function addFileItem(name) {\n      const el = document.createElement('div');\n      el.style.cssText = 'padding:6px 12px;border-bottom:1px solid #ecf0f1;display:flex;align-items:center;justify-content:space-between;font-size:13px;';\n      el.innerHTML = '<span style=\"font-weight:500;color:#333;word-break:break-all;\">' + escapeHtml(name) + '<\/span><span class=\"file-status\" style=\"white-space:nowrap;margin-left:8px;\">\ud83d\udd52<\/span>';\n      processingList.appendChild(el);\n      return el;\n    }\n    function updateFileItem(el, status, info) {\n      const s = el.querySelector('.file-status');\n      s.innerHTML = status === 'completed' ? '<span style=\"color:#27ae60;\">\u2705 ' + info + '<\/span>' : '<span style=\"color:#e74c3c;\">\u274c \u30a8\u30e9\u30fc<\/span>';\n    }\n    function escapeHtml(s) { return s.replace(\/&\/g, '&amp;').replace(\/<\/g, '&lt;').replace(\/>\/g, '&gt;').replace(\/\"\/g, '&quot;'); }\n    function downloadBlob(blob, fn) { const u = URL.createObjectURL(blob), a = document.createElement('a'); a.href = u; a.download = fn; document.body.appendChild(a); a.click(); document.body.removeChild(a); URL.revokeObjectURL(u); }\n    function showMessage(msg, ok) {\n      if (!encodedMessage) return;\n      encodedMessage.innerHTML = '<p class=\"alert is-ghosted ' + (ok ? 'is-primary' : 'is-caution') + ' mt-0.5r\"><i class=\"icon mas ' + (ok ? 'ma-check_circle' : 'ma-error') + ' c-' + (ok ? 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