{"id":12438,"date":"2025-12-08T10:23:12","date_gmt":"2025-12-08T01:23:12","guid":{"rendered":"https:\/\/rakkoserver.com\/plus\/?p=12131"},"modified":"2025-12-08T10:23:12","modified_gmt":"2025-12-08T01:23:12","slug":"tool-image-size-checker","status":"publish","type":"post","link":"https:\/\/rakkokeyword.com\/techo\/tool-image-size-checker\/","title":{"rendered":"\u753b\u50cf\u30b5\u30a4\u30ba\u78ba\u8a8d\u30c4\u30fc\u30eb"},"content":{"rendered":"\n<div id=\"imgchk-container\">\n  <style>\n    #imgchk-container {\n      width: 100%;\n      font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif;\n      color: #333;\n      box-sizing: border-box;\n      --imgchk-primary-color: #13284B;\n      --imgchk-bg-light: #f8f8f8;\n      --imgchk-bg-lighter: #f0f0f0;\n      --imgchk-bg-drag: #e8e8e8;\n      --imgchk-text-primary: #333;\n      --imgchk-text-secondary: #666;\n      --imgchk-text-tertiary: #999;\n      --imgchk-border-color: #ddd;\n      --imgchk-error-bg: #ffebee;\n      --imgchk-error-text: #c62828;\n      --imgchk-success-color: #4CAF50;\n    }\n    \n    #imgchk-container * {\n      box-sizing: border-box;\n    }\n    \n    #imgchk-tabs {\n      display: flex;\n      gap: 0;\n      margin-bottom: 16px;\n      border-bottom: 2px solid var(--imgchk-border-color);\n    }\n    \n    .imgchk-tab {\n      flex: 1;\n      padding: 12px 16px;\n      background: none;\n      border: none;\n      border-bottom: 3px solid transparent;\n      color: var(--imgchk-text-secondary);\n      cursor: pointer;\n      font-size: 15px;\n      font-weight: 500;\n      transition: all 0.2s ease;\n      margin-bottom: -2px;\n    }\n    \n    .imgchk-tab:hover {\n      color: var(--imgchk-primary-color);\n    }\n    \n    .imgchk-tab.imgchk-active {\n      color: var(--imgchk-primary-color);\n      border-bottom-color: var(--imgchk-primary-color);\n    }\n    \n    .imgchk-tab-content {\n      display: none;\n    }\n    \n    .imgchk-tab-content.imgchk-active {\n      display: block;\n    }\n    \n    #imgchk-dropzone {\n      width: 100%;\n      min-height: 250px;\n      background-color: var(--imgchk-bg-light);\n      display: flex;\n      flex-direction: column;\n      align-items: center;\n      justify-content: center;\n      cursor: pointer;\n      transition: background-color 0.3s ease;\n      position: relative;\n    }\n    \n    #imgchk-dropzone:hover {\n      background-color: var(--imgchk-bg-lighter);\n    }\n    \n    #imgchk-dropzone.imgchk-dragover {\n      background-color: var(--imgchk-bg-drag);\n      outline: 2px dashed var(--imgchk-primary-color);\n      outline-offset: -8px;\n    }\n    \n    #imgchk-dropzone-icon {\n      width: 64px;\n      height: 64px;\n      margin-bottom: 16px;\n      opacity: 0.5;\n    }\n    \n    #imgchk-dropzone-text {\n      font-size: 16px;\n      color: var(--imgchk-text-secondary);\n      margin: 0 0 4px 0;\n      font-weight: 500;\n    }\n    \n    #imgchk-dropzone-subtext {\n      font-size: 14px;\n      color: var(--imgchk-text-tertiary);\n      margin: 0;\n    }\n    \n    #imgchk-file-input {\n      display: none;\n    }\n    \n    #imgchk-url-input-wrapper {\n      width: 100%;\n      padding: 20px;\n      background-color: var(--imgchk-bg-light);\n    }\n    \n    #imgchk-url-input-form {\n      display: flex;\n      gap: 8px;\n      flex-wrap: wrap;\n    }\n    \n    #imgchk-url-input {\n      flex: 1;\n      min-width: 200px;\n      padding: 12px 16px;\n      border: 1px solid var(--imgchk-border-color);\n      border-radius: 4px;\n      font-size: 14px;\n      font-family: inherit;\n    }\n    \n    #imgchk-url-input:focus {\n      outline: none;\n      border-color: var(--imgchk-primary-color);\n    }\n    \n    #imgchk-url-submit {\n      padding: 12px 24px;\n      background-color: var(--imgchk-primary-color);\n      color: white;\n      border: none;\n      border-radius: 4px;\n      font-size: 14px;\n      font-weight: 600;\n      cursor: pointer;\n      transition: opacity 0.2s ease;\n      white-space: nowrap;\n      min-height: 44px;\n    }\n    \n    #imgchk-url-submit:hover {\n      opacity: 0.9;\n    }\n    \n    #imgchk-url-submit:disabled {\n      opacity: 0.5;\n      cursor: not-allowed;\n    }\n    \n    #imgchk-result {\n      display: none;\n      width: 100%;\n      padding: 24px 0;\n      opacity: 0;\n      animation: imgchk-fadeIn 0.4s ease forwards;\n    }\n    \n    @keyframes imgchk-fadeIn {\n      from {\n        opacity: 0;\n        transform: translateY(-10px);\n      }\n      to {\n        opacity: 1;\n        transform: translateY(0);\n      }\n    }\n    \n    #imgchk-result.imgchk-active {\n      display: block;\n    }\n    \n    #imgchk-preview-wrapper {\n      display: flex;\n      justify-content: center;\n      margin-bottom: 24px;\n    }\n    \n    #imgchk-preview-image {\n      max-width: 200px;\n      max-height: 200px;\n      object-fit: contain;\n      border: 1px solid var(--imgchk-border-color);\n      border-radius: 4px;\n    }\n    \n    #imgchk-dimensions-wrapper {\n      display: flex;\n      justify-content: center;\n      gap: 32px;\n      margin-bottom: 32px;\n    }\n    \n    .imgchk-dimension-box {\n      display: flex;\n      flex-direction: column;\n      align-items: center;\n    }\n    \n    .imgchk-dimension-label {\n      font-size: 14px;\n      color: var(--imgchk-text-secondary);\n      margin: 0 0 8px 0;\n    }\n    \n    .imgchk-dimension-value-row {\n      display: flex;\n      align-items: baseline;\n      gap: 6px;\n    }\n    \n    .imgchk-dimension-value {\n      font-size: 48px;\n      font-weight: bold;\n      color: var(--imgchk-primary-color);\n      margin: 0;\n      line-height: 1;\n    }\n    \n    .imgchk-dimension-unit {\n      font-size: 18px;\n      color: var(--imgchk-text-secondary);\n      margin: 0;\n    }\n    \n    #imgchk-ratio-display {\n      text-align: center;\n      margin-bottom: 32px;\n    }\n    \n    #imgchk-ratio-label {\n      font-size: 14px;\n      color: var(--imgchk-text-secondary);\n      margin: 0 0 4px 0;\n    }\n    \n    #imgchk-ratio-value {\n      font-size: 24px;\n      font-weight: 600;\n      color: var(--imgchk-text-primary);\n      margin: 0;\n    }\n    \n    #imgchk-info-display {\n      display: flex;\n      flex-wrap: wrap;\n      justify-content: center;\n      gap: 24px;\n      padding: 16px;\n      background-color: var(--imgchk-bg-light);\n      margin-bottom: 24px;\n    }\n    \n    .imgchk-info-item {\n      display: flex;\n      flex-direction: column;\n      align-items: center;\n      min-width: 100px;\n    }\n    \n    .imgchk-info-label {\n      font-size: 12px;\n      color: var(--imgchk-text-tertiary);\n      margin: 0 0 4px 0;\n      text-transform: uppercase;\n      letter-spacing: 0.5px;\n    }\n    \n    .imgchk-info-value {\n      font-size: 16px;\n      font-weight: 600;\n      color: var(--imgchk-text-primary);\n      margin: 0;\n    }\n    \n    #imgchk-check-another-btn {\n      width: 100%;\n      padding: 14px 24px;\n      background-color: var(--imgchk-primary-color);\n      color: white;\n      border: none;\n      border-radius: 4px;\n      font-size: 15px;\n      font-weight: 600;\n      cursor: pointer;\n      transition: opacity 0.2s ease;\n      min-height: 48px;\n    }\n    \n    #imgchk-check-another-btn:hover {\n      opacity: 0.9;\n    }\n    \n    #imgchk-error {\n      display: none;\n      width: 100%;\n      padding: 16px;\n      background-color: var(--imgchk-error-bg);\n      color: var(--imgchk-error-text);\n      text-align: center;\n      margin-top: 16px;\n      border-radius: 4px;\n    }\n    \n    #imgchk-error.imgchk-active {\n      display: block;\n    }\n    \n    #imgchk-error p {\n      margin: 0;\n      font-size: 14px;\n    }\n    \n    #imgchk-loading {\n      display: none;\n      text-align: center;\n      padding: 20px;\n      color: var(--imgchk-text-secondary);\n    }\n    \n    #imgchk-loading.imgchk-active {\n      display: block;\n    }\n    \n    #imgchk-loading p {\n      margin: 0;\n      font-size: 14px;\n    }\n    \n    @media (max-width: 600px) {\n      #imgchk-dimensions-wrapper {\n        gap: 24px;\n      }\n      \n      .imgchk-dimension-value {\n        font-size: 36px;\n      }\n      \n      .imgchk-dimension-unit {\n        font-size: 16px;\n      }\n      \n      #imgchk-ratio-value {\n        font-size: 20px;\n      }\n      \n      #imgchk-info-display {\n        flex-direction: column;\n        gap: 12px;\n      }\n      \n      #imgchk-url-input-form {\n        flex-direction: column;\n      }\n      \n      #imgchk-url-input {\n        width: 100%;\n      }\n      \n      #imgchk-url-submit {\n        width: 100%;\n      }\n      \n      #imgchk-preview-image {\n        max-width: 150px;\n        max-height: 150px;\n      }\n    }\n  <\/style>\n\n  <div id=\"imgchk-tabs\">\n    <button class=\"imgchk-tab imgchk-active\" data-tab=\"file\" type=\"button\">\u30d5\u30a1\u30a4\u30eb<\/button>\n    <button class=\"imgchk-tab\" data-tab=\"url\" type=\"button\">URL<\/button>\n  <\/div>\n\n  <div class=\"imgchk-tab-content imgchk-active\" data-content=\"file\">\n    <div id=\"imgchk-dropzone\">\n      <svg id=\"imgchk-dropzone-icon\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\">\n        <rect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\" ry=\"2\" \/>\n        <circle cx=\"8.5\" cy=\"8.5\" r=\"1.5\" \/>\n        <polyline points=\"21 15 16 10 5 21\" \/>\n      <\/svg>\n      <p id=\"imgchk-dropzone-text\">\u3053\u3053\u306b\u753b\u50cf\u3092\u30c9\u30ed\u30c3\u30d7<\/p>\n      <p id=\"imgchk-dropzone-subtext\">\u307e\u305f\u306f\u30af\u30ea\u30c3\u30af\u3057\u3066\u9078\u629e<\/p>\n      <input type=\"file\" id=\"imgchk-file-input\" accept=\"image\/*\" aria-label=\"\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\">\n    <\/div>\n  <\/div>\n\n  <div class=\"imgchk-tab-content\" data-content=\"url\">\n    <div id=\"imgchk-url-input-wrapper\">\n      <form id=\"imgchk-url-input-form\">\n        <input type=\"url\" id=\"imgchk-url-input\" placeholder=\"https:\/\/example.com\/image.jpg\" aria-label=\"\u753b\u50cfURL\">\n        <button type=\"submit\" id=\"imgchk-url-submit\">\u30c1\u30a7\u30c3\u30af<\/button>\n      <\/form>\n    <\/div>\n  <\/div>\n\n  <div id=\"imgchk-loading\">\n    <p>\u8aad\u307f\u8fbc\u307f\u4e2d\u2026<\/p>\n  <\/div>\n\n  <div id=\"imgchk-result\">\n    <div id=\"imgchk-preview-wrapper\">\n      <img id=\"imgchk-preview-image\" alt=\"\u30d7\u30ec\u30d3\u30e5\u30fc\u753b\u50cf\">\n    <\/div>\n    \n    <div id=\"imgchk-dimensions-wrapper\">\n      <div class=\"imgchk-dimension-box\">\n        <p class=\"imgchk-dimension-label\">\u5e45\uff08width\uff09<\/p>\n        <div class=\"imgchk-dimension-value-row\">\n          <p class=\"imgchk-dimension-value\" id=\"imgchk-width-value\">0<\/p>\n          <p class=\"imgchk-dimension-unit\">px<\/p>\n        <\/div>\n      <\/div>\n      <div class=\"imgchk-dimension-box\">\n        <p class=\"imgchk-dimension-label\">\u9ad8\u3055\uff08height\uff09<\/p>\n        <div class=\"imgchk-dimension-value-row\">\n          <p class=\"imgchk-dimension-value\" id=\"imgchk-height-value\">0<\/p>\n          <p class=\"imgchk-dimension-unit\">px<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n    \n    <div id=\"imgchk-ratio-display\">\n      <p id=\"imgchk-ratio-label\">\u6bd4\u7387<\/p>\n      <p id=\"imgchk-ratio-value\" aria-label=\"\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\">0 : 0<\/p>\n    <\/div>\n    \n    <div id=\"imgchk-info-display\">\n      <div class=\"imgchk-info-item\">\n        <p class=\"imgchk-info-label\">\u5bb9\u91cf<\/p>\n        <p class=\"imgchk-info-value\" id=\"imgchk-filesize\" aria-label=\"\u30d5\u30a1\u30a4\u30eb\u5bb9\u91cf\">0 KB<\/p>\n      <\/div>\n      <div class=\"imgchk-info-item\">\n        <p class=\"imgchk-info-label\">\u5f62\u5f0f<\/p>\n        <p class=\"imgchk-info-value\" id=\"imgchk-format\" aria-label=\"\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\">\u2013<\/p>\n      <\/div>\n    <\/div>\n    \n    <button id=\"imgchk-check-another-btn\" type=\"button\">\u5225\u306e\u753b\u50cf\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/button>\n  <\/div>\n\n  <div id=\"imgchk-error\" role=\"alert\">\n    <p id=\"imgchk-error-message\"><\/p>\n  <\/div>\n\n\n<\/div>\n\n\n\n<p>\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3001\u307e\u305f\u306f<strong>\u753b\u50cf\u306eURL\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067<\/strong>\u3001\u5927\u304d\u3055\uff08\u5e45\u30fb\u9ad8\u3055\uff09\u30fb\u6bd4\u7387\u30fb\u30d5\u30a1\u30a4\u30eb\u5bb9\u91cf\u3092\u77ac\u6642\u306b\u78ba\u8a8d\u3067\u304d\u308b\u7121\u6599\u30c4\u30fc\u30eb\u3067\u3059\u3002 \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u4e0d\u8981\u3002PC\u5185\u306e\u753b\u50cf\u306f\u3082\u3061\u308d\u3093\u3001Web\u4e0a\u3067\u6c17\u306b\u306a\u3063\u305f\u753b\u50cf\u306e\u89e3\u6790\u3082\u305d\u306e\u307e\u307e\u884c\u3048\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>\u3053\u306e\u30c4\u30fc\u30eb\u3067\u306f\u3001\u753b\u50cf\u306b\u3064\u3044\u3066\u4ee5\u4e0b\u306e\u60c5\u5831\u3092\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u753b\u50cf\u30b5\u30a4\u30ba\u30fb\u5bb9\u91cf\u306e\u4e00\u62ec\u78ba\u8a8d<\/strong> \u753b\u50cf\u306e\u300c\u5e45\uff08width\uff09\u00d7\u9ad8\u3055\uff08height\uff09\u300d\u3068\u3001\u30c7\u30fc\u30bf\u306e\u300c\u91cd\u3055\uff08KB\/MB\uff09\u300d\u3092\u77ac\u6642\u306b\u8868\u793a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>URL\u304b\u3089\u306e\u76f4\u63a5\u30c1\u30a7\u30c3\u30af<\/strong> \u624b\u6301\u3061\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3060\u3051\u3067\u306a\u304f\u3001Web\u4e0a\u306e\u753b\u50cf\u306eURL\uff08\u753b\u50cf\u30a2\u30c9\u30ec\u30b9\uff09\u3092\u8cbc\u308a\u4ed8\u3051\u308b\u3060\u3051\u3067\u3001\u30b5\u30a4\u30ba\u3084\u5f62\u5f0f\u3092\u89e3\u6790\u3067\u304d\u307e\u3059\u3002\u308f\u3056\u308f\u3056\u753b\u50cf\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li><strong>\u7e26\u6a2a\u6bd4\uff08\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\uff09\u306e\u81ea\u52d5\u8a08\u7b97<\/strong> \u300c16:9\u300d\u3084\u300c4:3\u300d\u3068\u3044\u3063\u305f\u6bd4\u7387\u3092\u81ea\u52d5\u3067\u7b97\u51fa\u3057\u307e\u3059\u3002\u52d5\u753b\u30b5\u30e0\u30cd\u30a4\u30eb\u3084SNS\u6295\u7a3f\u306e\u63a8\u5968\u6bd4\u7387\u3068\u5408\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u306e\u306b\u4fbf\u5229\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">\u3053\u306e\u30c4\u30fc\u30eb\u3067\u53d6\u5f97\u3059\u308b\u60c5\u5831\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<p>\u30c4\u30fc\u30eb\u306b\u8868\u793a\u3055\u308c\u308b\u9805\u76ee\u306e\u610f\u5473\u3092\u7c21\u5358\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>px\uff08\u30d4\u30af\u30bb\u30eb\uff09<\/strong> \u30c7\u30b8\u30bf\u30eb\u753b\u50cf\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u5358\u4f4d\u3067\u3059\u3002\u6570\u5024\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u9ad8\u7cbe\u7d30\u3067\u5927\u304d\u306a\u753b\u50cf\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30d5\u30ebHD\u306e\u30e2\u30cb\u30bf\u30fc\u306f\u300c1920px \u00d7 1080px\u300d\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u6bd4\u7387\uff08\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\uff09<\/strong> 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