{"id":15219,"date":"2021-07-06T16:55:43","date_gmt":"2021-07-06T07:55:43","guid":{"rendered":"https:\/\/www.webtech.co.jp\/blog\/?p=15219"},"modified":"2021-07-07T16:45:12","modified_gmt":"2021-07-07T07:45:12","slug":"filesize_03","status":"publish","type":"post","link":"https:\/\/www.webtech.co.jp\/blog\/optpix_labs\/15219\/","title":{"rendered":"\u753b\u50cf\u5bb9\u91cf\u3092\u5c0f\u3055\u304f\u3059\u308b\u65b9\u6cd5\uff1a\u7b2c3\u56de \u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u7a2e\u985e\u3068\u9069\u6027"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/07\/0708_banner_01.png\" alt=\"\" class=\"size-full wp-image-15402 aligncenter\" width=\"640\" height=\"223\" \/><\/p>\n<p>\u30a6\u30a7\u30d6\u62c5\u5f53\u306e\u5d8b\u3067\u3059\u3002<\/p>\n<p>\u753b\u50cf\u5bb9\u91cf\u3092\u5c0f\u3055\u304f\u3059\u308b\u65b9\u6cd5\u3001<a href=\"https:\/\/www.webtech.co.jp\/blog\/optpix_labs\/14776\/\" target=\"_blank\" rel=\"noopener\">\u524d\u56de<\/a>\u306f\u753b\u50cf\u30b5\u30a4\u30ba\u306b\u3064\u3044\u3066\u306e\u57fa\u790e\u77e5\u8b58\u3084\u30d4\u30af\u30bb\u30eb\u5bc6\u5ea6\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u753b\u50cf\u306e\u6700\u9069\u5316\u51e6\u7406\u306f\u4e3b\u306bPC\u3067\u884c\u3046\u3053\u3068\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3092\u898b\u308b\u74b0\u5883\u304c\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u5834\u5408\u306f\u30ea\u30b5\u30a4\u30ba\u3059\u308b\u5834\u5408\u3082\u6c17\u3092\u4f7f\u308f\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3001\u3068\u3044\u3063\u305f\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n<p>\u3055\u3066\u3001\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u304c\u6c7a\u307e\u3063\u305f\u3089\u4eca\u5ea6\u306f\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\u3059\u308b\u4f5c\u696d\u3092\u884c\u3044\u307e\u3059\u3002\u898b\u305f\u76ee\u306f\u540c\u3058\u753b\u50cf\u3067\u3082\u3001\u30c7\u30b8\u30bf\u30eb\u306e\u4e16\u754c\u3067\u306f\u305d\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u7279\u9577\u3001\u5f97\u624b\u4e0d\u5f97\u624b\u306a\u3069\u3092\u3054\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.webtech.co.jp\/blog\/optpix_labs\/14947\/\" target=\"_blank\" rel=\"noopener\">\u7b2c1\u56de\uff1a\u300c\u753b\u50cf\u5bb9\u91cf\u306b\u95a2\u3059\u308b\u57fa\u790e\u77e5\u8b58\u300d<\/a><\/li>\n<li><a href=\"https:\/\/www.webtech.co.jp\/blog\/optpix_labs\/14776\/\" target=\"_blank\" rel=\"noopener\">\u7b2c2\u56de\uff1a\u300c\u753b\u50cf\u30b5\u30a4\u30ba\u306e\u8abf\u6574\u300d<\/a><\/li>\n<\/ul>\n<p><!--more--><\/p>\n<h2>\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u7a2e\u985e\u3068\u7279\u9577<\/h2>\n<p>\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u306f\u7528\u9014\u306b\u5fdc\u3058\u3066\u305f\u304f\u3055\u3093\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306b\u4f7f\u308f\u308c\u308b\u3082\u306e\u3068\u3057\u3066\u306f\u3001<\/p>\n<ul>\n<li>JPEG\uff08JPG\uff09<\/li>\n<li>PNG<\/li>\n<li>GIF\uff08\u542b\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3GIF\uff09<\/li>\n<li>WebP<\/li>\n<\/ul>\n<p>\u306e\uff14\u3064\u304c\u4ee3\u8868\u7684\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u4ed6\u3001\u53e4\u304f\u304b\u3089\u306eWindows\u7528\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306eBMP\u3082\u591a\u304f\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u8868\u793a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3067\u306f\u4f7f\u7528\u3092\u907f\u3051\u308b\u3079\u304d\u3067\u3059\u3002JPEG2000\u3084JPEG-XR\u306a\u3069\u3001\u300c\u6b21\u4e16\u4ee3\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u300d\u3068\u547c\u3070\u308c\u3066\u767b\u5834\u3057\u305f\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u3054\u304f\u4e00\u90e8\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<br 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id=\"attachment_15368\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15368\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/jpeg_loss.png\" alt=\"\" class=\"wp-image-15368 size-full\" width=\"600\" height=\"192\" \/><p id=\"caption-attachment-15368\" class=\"wp-caption-text\">\u7e70\u308a\u8fd4\u3057\u4fdd\u5b58\u3059\u308b\u3068\u52a3\u5316\u304c\u9032\u3080JPEG<\/p><\/div>\n<p>\u307e\u305f\u3001PNG\u3084WebP\u3001GIF\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u300c\u900f\u904e\u8272\u300d\u300c\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u300d\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u80cc\u666f\u3092\u900f\u304b\u3057\u305f\u30ed\u30b4\u753b\u50cf\u306a\u3069\u306b\u306f\u4f7f\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u3080\u3057\u308d\u3001\u8f2a\u90ed\u306a\u3069\u306b\u30e1\u30ea\u30cf\u30ea\u306e\u3042\u308b\u30ed\u30b4\u753b\u50cf\u3067\u306f\u8f2a\u90ed\u90e8\u306b\u30ce\u30a4\u30ba\u304c\u4e57\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u80cc\u666f\u900f\u904e\u3067\u306f\u306a\u3044\u753b\u50cf\u3060\u3063\u305f\u3068\u3057\u3066\u3082\u4f7f\u7528\u306f\u907f\u3051\u305f\u307b\u3046\u304c\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u5bfe\u5fdc\u3001\u8272\u6570\u3092\u6e1b\u3089\u3059\u3053\u3068\u3067\u753b\u50cf\u5bb9\u91cf\u3092\u6e1b\u3089\u305b\u308bPNG<\/h3>\n<p>JPEG\u3068\u540c\u3058\u304f\u3089\u3044\u30dd\u30d4\u30e5\u30e9\u30fc\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304cPNG\u3067\u3059\u3002JPEG\u304c\u975e\u53ef\u9006\u5727\u7e2e\u306a\u306e\u306b\u5bfe\u3057\u3001PNG\u306f\u53ef\u9006\u5727\u7e2e\u306a\u306e\u3067\u7e70\u308a\u8fd4\u3057\u4fdd\u5b58\u3057\u3066\u3082\u52a3\u5316\u3057\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u30a2\u30cb\u30e1\u8abf\u306e\u30a4\u30e9\u30b9\u30c8\u3084\u30e2\u30ce\u30af\u30ed\u306e\u30de\u30f3\u30ac\u3001\u30ed\u30b4\u753b\u50cf\u306a\u3069\u8f2a\u90ed\u3084\u30e1\u30ea\u30cf\u30ea\u304c\u306f\u3063\u304d\u308a\u3057\u305f\u753b\u50cf\u3067\u3082\u30ce\u30a4\u30ba\u304c\u767a\u751f\u3057\u306a\u3044\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u753b\u50cf\u306fJPEG\u3088\u308a\u3082PNG\u3067\u4f5c\u6210\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<p>JPEG\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u300c\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u300d\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u306e\u3082\u7279\u9577\u3067\u3059\u3002\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u306f\u4e00\u8a00\u3067\u3044\u3046\u3068\u300c\u900f\u660e\u5ea6\u306e\u30ec\u30d9\u30eb\u300d\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u306f0(\u900f\u660e)\uff5e255(\u4e0d\u900f\u660e)\u306e256\u6bb5\u968e\uff088bit\uff09\u3067\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e0b\u306e\u753b\u50cf\u3067\u306f\u8eca\u306e\u5f8c\u90e8\u306e\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u6570\u5024\u3092\u6bb5\u968e\u7684\u306b\u4e0b\u3052\u3066\u5f90\u3005\u306b\u900f\u904e\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div id=\"attachment_15372\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15372\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/alpha_sample.png\" alt=\"\" class=\"wp-image-15372 size-full\" width=\"400\" height=\"196\" \/><p id=\"caption-attachment-15372\" class=\"wp-caption-text\">PNG\u306f\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u6570\u5024\u6b21\u7b2c\u3067\u300c\u534a\u900f\u904e\u300d\u3082\u8868\u793a\u3067\u304d\u308b<\/p><\/div>\n<p>\u96e3\u70b9\u3068\u3057\u3066\u3001\u30d5\u30eb\u30ab\u30e9\u30fc(24bit\uff09\u3060\u3068\u753b\u50cf\u5bb9\u91cf\u304cJPEG\u3088\u308a\u3082\u304b\u306a\u308a\u5927\u304d\u304f\u306a\u308b\u70b9\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u7684\u306b\u5bb9\u91cf\u306e\u5727\u7e2e\u306b\u306f\u9650\u754c\u304c\u3042\u308b\u306e\u3067\u3001\u3053\u306e\u5834\u5408\u306f\u4f7f\u308f\u308c\u3066\u3044\u308b\u8272\u6570\u3092\u6e1b\u3089\u3059\u300c\u6e1b\u8272\u300d\u3092\u884c\u3044\u3001256\u8272(8bit\uff09\u4ee5\u4e0b\u306e\u72b6\u614b\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u753b\u50cf\u5bb9\u91cf\u3092\u5c0f\u3055\u304f\u3059\u308b\u624b\u6cd5\u304c\u53d6\u3089\u308c\u307e\u3059\u3002<\/p>\n<div id=\"attachment_15373\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15373\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/car24bit.png\" alt=\"\" class=\"wp-image-15373 size-full\" width=\"400\" height=\"184\" \/><p id=\"caption-attachment-15373\" class=\"wp-caption-text\">PNG24bit+\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb 74.5KB<\/p><\/div>\n<div id=\"attachment_15374\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15374\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/car8bit.png\" alt=\"\" class=\"wp-image-15374 size-full\" width=\"400\" height=\"184\" \/><p id=\"caption-attachment-15374\" class=\"wp-caption-text\">PNG8bit+\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb 23.6KB<\/p><\/div>\n<p>\u307e\u305f\u3001\u8fd1\u5e74\u3067\u306f\u300c\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3PNG\uff08APNG\uff09\u300d\u3068\u547c\u3070\u308c\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3082\u767b\u5834\u3057\u3066\u3044\u307e\u3059\u3002\u5f8c\u8ff0\u3059\u308b\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3GIF\u306ePNG\u7248\u3067\u3001LINE\u30b9\u30bf\u30f3\u30d7\u306a\u3069\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3082\u3042\u308a\u307e\u3059\u3002safari\u3084Chrome\u306a\u3069\u5bfe\u5fdc\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u3082\u5897\u3048\u3066\u304a\u308a\u3001\u5236\u4f5c\u74b0\u5883\u3068\u753b\u50cf\u5bb9\u91cf\u306e\u554f\u984c\u3055\u3048\u89e3\u6c7a\u3067\u304d\u308c\u3070\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306e\u8868\u73fe\u3092\u5927\u304d\u304f\u5e83\u3052\u308b\u3082\u306e\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n<div style=\"width: 210px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2017\/07\/24bit_default_apng.png\" alt=\"\" width=\"200\" height=\"200\" \/><p class=\"wp-caption-text\">\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3PNG\u306e\u4f8b<\/p><\/div>\n<p>\u203b \u4f59\u8ac7\u3067\u3059\u304c\u3001\u5f0a\u793e\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u4f5c\u6210\u30c4\u30fc\u30eb<a href=\"\/spritestudio\/\" target=\"_blank\" rel=\"noopener\">OPTPiX SpriteStudio<\/a>\u3092\u4f7f\u3063<a href=\"https:\/\/www.webtech.co.jp\/blog\/products\/spritestudio\/9866\/\" target=\"_blank\" rel=\"noopener\">\u3066LINE\u30b9\u30bf\u30f3\u30d7\u3092\u4f5c\u3063\u3066\u307f\u308b\u3068\u3044\u3046\u30d6\u30ed\u30b0\u8a18\u4e8b<\/a>\u304c\u3054\u3056\u3044\u307e\u3059\u306e\u3067\u3001\u3088\u308d\u3057\u3051\u308c\u3070\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u80cc\u666f\u900f\u904e\u3084\u5c0f\u3055\u3044\u30a2\u30a4\u30b3\u30f3\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3068\u3044\u3048\u3070GIF<\/h3>\n<p>PNG\u3068\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u80cc\u666f\u900f\u904e\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u3053\u3068\u306e\u3067\u304d\u308b\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306bGIF\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3061\u3089\u306f\u4f7f\u7528\u3067\u304d\u308b\u8272\u6570\u304c\u6700\u5927256\u8272\u307e\u3067\u3001\u900f\u904e\u3082\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f\u306a\u304f\u300c\u900f\u904e\u304b\u975e\u900f\u904e\u300d\u306e\u3044\u305a\u308c\u304b\u304b\u3089\u6307\u5b9a\u3059\u308b\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u53e4\u304f\u304b\u3089\u5b58\u5728\u3059\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u6c4e\u7528\u6027\u304c\u975e\u5e38\u306b\u9ad8\u304f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u521d\u671f\u306e\u9803\u306f\u81ea\u4f5c\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u306e\u30a2\u30a4\u30b3\u30f3\uff08<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/new.gif\" alt=\"\" class=\"alignnone size-full wp-image-15378\" width=\"22\" height=\"14\" \/> \u2190 \u3053\u3046\u3044\u3063\u305f\u3082\u306e\uff09\u306a\u3069\u306b\u3082\u3088\u304f\u4f7f\u308f\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u6700\u8fd1\u3067\u306f\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u4e2d\u306e\u300c\u3050\u308b\u3050\u308b\u300d\u306b\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3GIF\u304c\u4f7f\u308f\u308c\u308b\u4f8b\u304c\u591a\u3044\u3088\u3046\u3067\u3059\u3002\u3053\u3046\u3044\u3046\u306e\u3067\u3059\u306d\u3002<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/loading.gif\" alt=\"\" class=\"aligncenter wp-image-15379 size-full\" width=\"29\" height=\"29\" \/><\/p>\n<p>GIF\u306f\u5727\u7e2e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306bUNISYS\u793e\u306e\u7279\u8a31\u304c\u5b58\u5728\u3057\u3066\u3044\u305f\u305f\u3081\u3001\u5229\u7528\u3059\u308b\u306b\u306f\u7279\u8a31\u4f7f\u7528\u6599\u3092\u652f\u6255\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u7279\u8a31\u306f\u65e2\u306b\u5931\u52b9\u3057\u3066\u3044\u308b\u306e\u3067\u4eca\u306f\u7121\u511f\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u304c\u3001\u5f53\u6642\u3001\u305d\u306e\u554f\u984c\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u767a\u5c55\u7684\u306b\u751f\u307e\u308c\u305f\u306e\u304cPNG\u3001\u3068\u3044\u3046\u6b74\u53f2\u7684\u306a\u7d4c\u7def\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u5727\u7e2e\u52b9\u7387\u7684\u306b\u306fPNG\u306e\u307b\u3046\u304c\u826f\u3044\u306e\u3067\u3001\u300cGIF\u3067\u7d0d\u54c1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u300d\u300c\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u4f5c\u6210\u30c4\u30fc\u30eb\u3067\u306fAPNG\u3067\u51fa\u529b\u3067\u304d\u306a\u3044\u300d\u306a\u3069\u660e\u78ba\u306bGIF\u3067\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u7406\u7531\u304c\u306a\u3051\u308c\u3070\u3001\u308f\u3056\u308f\u3056GIF\u306b\u305b\u305a\u3001PNG\u3092\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5bb9\u91cf\u3082\u5c0f\u3055\u304f\u3001\u900f\u904e\u3082OK\u3001Google\u306e\u30b5\u30a4\u30c8\u8a55\u4fa1\u3082\u9ad8\u3044WebP<\/h3>\n<p>\u753b\u8cea\u306e\u5272\u306b\u5727\u7e2e\u7387\u304c\u9ad8\u304f\u3001Google\u306e<a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\" target=\"_blank\" rel=\"noopener\">Page Speed Insight<\/a>\u306b\u3082\u597d\u5f71\u97ff\u306a\u306e\u304c2010\u5e74\u306bGoogle\u304b\u3089\u4ed5\u69d8\u304c\u516c\u8868\u3055\u308c\u305fWebP\uff08\u30a6\u30a7\u30c3\u30d4\u30fc\uff09\u3067\u3059\u3002JPEG\u3084PNG\u306e\u7f6e\u304d\u63db\u3048\u3092\u76ee\u7684\u306b\u958b\u767a\u304c\u9032\u3081\u3089\u308c\u3066\u3044\u308b\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001\u53ef\u9006\u5727\u7e2e\u30e2\u30fc\u30c9\u3068\u975e\u53ef\u9006\u5727\u7e2e\u30e2\u30fc\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001JPEG\u3068\u9055\u3063\u3066\u975e\u53ef\u9006\u5727\u7e2e\u3067\u3082\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u96e3\u70b9\u306f\u65b0\u3057\u3044\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u6545\u306e\u300c\u6c4e\u7528\u6027\u300d\u3067\u3059\u3002\u6700\u8fd1\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3042\u308c\u3070\u8868\u793a\u306f\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30d3\u30e5\u30fc\u30ef\u30fc\u3084\u30a8\u30c7\u30a3\u30bf\u30fc\u5074\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30b1\u30fc\u30b9\u3082\u307e\u3060\u307e\u3060\u3042\u308a\u307e\u3059\u3002\u753b\u50cf\u52a0\u5de5\u30c4\u30fc\u30eb\u306e\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\u3067\u3042\u308bPhotoshop\u3082\u307e\u3060\u975e\u5bfe\u5fdc\u3067\u3059\u3002\uff08\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u5fc5\u8981\uff09<\/p>\n<p>\u307e\u305f\u3001OS\u30ec\u30d9\u30eb\u3067\u306fWindows 10\u306f\u30d0\u30fc\u30b8\u30e7\u30f31709\u4ee5\u964d\u3001macOS\u306fBig Sur\u4ee5\u964d\u3001iOS\u306b\u81f3\u3063\u3066\u306f\u6628\u5e74\u79cb\u30ea\u30ea\u30fc\u30b9\u306e14\u4ee5\u964d\u3067\u306a\u3044\u3068\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093.<\/p>\n<p>\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3067\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u53e4\u3044\u74b0\u5883\u3067\u8868\u793a\u51fa\u6765\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u6c4e\u7528\u6027\u306e\u9ad8\u3044JPEG\u3084PNG\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001WebP\u304c\u8868\u793a\u3067\u304d\u306a\u3044\u74b0\u5883\u306b\u5bfe\u3057\u3066\u4ee3\u66ff\u753b\u50cf\u3092\u8868\u793a\u3059\u308b\u3088\u3046\u306a\u8a2d\u8a08\u306b\u3059\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u4eca\u56de\u306e\u8a18\u4e8b\u306f\u6c4e\u7528\u6027\u3092\u8003\u616e\u3057\u3001WebP\u306f\u5916\u3057\u3066\u9032\u3081\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>4\u3064\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u307e\u3068\u3081<\/h3>\n<p>\u3067\u306f\u3053\u3053\u307e\u3067\u51fa\u3066\u304d\u305f\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u307e\u3068\u3081\u307e\u3057\u3087\u3046\u3002\u3069\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3082\u4e00\u9577\u4e00\u77ed\u304c\u3042\u308a\u300c\u3053\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u304a\u3051\u3070\u4e07\u5168\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u73fe\u6642\u70b9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5229\u7528\u3059\u308b\u7528\u9014\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<th style=\"width: 20%;\"><\/th>\n<th style=\"width: 20%;\">JPEG<\/th>\n<th style=\"width: 20%;\">PNG<\/th>\n<th style=\"width: 20%;\">GIF<\/th>\n<th style=\"width: 20%;\">WebP<\/th>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u5411\u3044\u3066\u3044\u308b\u7528\u9014<\/th>\n<td style=\"width: 20%;\">\u5199\u771f\u3001\u81ea\u7136\u753b<\/td>\n<td style=\"width: 20%;\">\u30ed\u30b4\u3001\u30a2\u30cb\u30e1\u8abf\u306e\u30a4\u30e9\u30b9\u30c8\u3001LINE\u30b9\u30bf\u30f3\u30d7<\/td>\n<td style=\"width: 20%;\">\u30a2\u30a4\u30b3\u30f3\u3001\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/td>\n<td style=\"width: 20%;\">\u30d5\u30eb\u30ab\u30e9\u30fc\u306e\u753b\u50cf\u5168\u822c<\/td>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u8272\u6570<\/th>\n<td style=\"width: 20%;\">\u7d041677\u4e07\u8272<\/td>\n<td style=\"width: 20%;\">\u7d041677\u4e07\u8272(PNG24)<br \/>\n\u6700\u5927256\u8272(PNG8)<\/td>\n<td style=\"width: 20%;\">\u6700\u5927256\u8272<\/td>\n<td style=\"width: 20%;\">\u7d041677\u4e07\u8272<\/td>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u5727\u7e2e<\/th>\n<td style=\"width: 20%;\">\u975e\u53ef\u9006\u5727\u7e2e<\/td>\n<td style=\"width: 20%;\">\u53ef\u9006\u5727\u7e2e<\/td>\n<td style=\"width: 20%;\">\u53ef\u9006\u5727\u7e2e<\/td>\n<td style=\"width: 20%;\">\u53ef\u9006\u5727\u7e2e\u30fb\u975e\u53ef\u9006\u5727\u7e2e<\/td>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb<\/th>\n<td style=\"width: 20%;\">\u00d7<\/td>\n<td style=\"width: 20%;\">\u25cb<\/td>\n<td style=\"width: 20%;\">\u00d7\uff08\u900f\u904e\u8272\u306e\u6307\u5b9a\u306f\u53ef\u80fd\uff09<\/td>\n<td style=\"width: 20%;\">\u25cb<\/td>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/th>\n<td style=\"width: 20%;\">\u00d7<\/td>\n<td style=\"width: 20%;\">\u25cb<\/td>\n<td style=\"width: 20%;\">\u25cb<\/td>\n<td style=\"width: 20%;\">\u25cb<\/td>\n<\/tr>\n<tr>\n<th style=\"width: 20%;\">\u6c4e\u7528\u6027<\/th>\n<td style=\"width: 20%;\">\u9ad8<\/td>\n<td style=\"width: 20%;\">\u9ad8<\/td>\n<td style=\"width: 20%;\">\u9ad8<\/td>\n<td style=\"width: 20%;\">\u4e2d\uff08\u9ad8\u307e\u308a\u3064\u3064\u3042\u308b\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u300c\u3068\u308a\u3042\u3048\u305aJPEG\u3067\u4fdd\u5b58\u3057\u3066\u304a\u304f\u300d\u306f\u3084\u3081\u308b\u3079\u304d<\/h2>\n<p>\u3088\u304f\u30da\u30fc\u30b8\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u753b\u50cf\u3084Twitter\u306a\u3069\u306b\u6295\u7a3f\u3059\u308b\u753b\u50cf\u3092\u4e00\u5f8bJPEG\u306b\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u898b\u3089\u308c\u307e\u3059\u304c\u3001\u753b\u8cea\u3092\u8003\u3048\u308b\u3068\u3053\u308c\u306f\u3042\u307e\u308a\u3044\u3044\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><strong>JPEG\u30fbPNG\u306b\u306f\u305d\u308c\u305e\u308c\u5f97\u624b\u4e0d\u5f97\u624b\u304c\u3042\u308a\u307e\u3059\u3002\u95c7\u96f2\u306b\u3069\u3061\u3089\u304b\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u7d71\u4e00\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u753b\u50cf\u306b\u5fdc\u3058\u3066\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/strong><\/p>\n<p>\u7279\u9577\u306e\u3068\u3053\u308d\u3067\u3082\u8ff0\u3079\u307e\u3057\u305f\u304c<strong>\u30c7\u30b8\u30ab\u30e1\u306e\u5199\u771f\u3001\u81ea\u7136\u753b\u306a\u3069\u306e\u753b\u50cf\u3067\u304b\u3064\u900f\u660e\u9818\u57df\u304c\u306a\u3044\u3082\u306e\u306fJPEG\u304c\u304a\u3059\u3059\u3081<\/strong>\u3067\u3059\u3002\u307e\u305f\u3001<strong>\u30a2\u30cb\u30e1\u8abf\u306e\u30a4\u30e9\u30b9\u30c8\u3001\u767d\u9ed2\u306e\u30de\u30f3\u30ac\u306a\u3069\u30e1\u30ea\u30cf\u30ea\u304c\u3042\u308b\u753b\u50cf\u306fPNG\u304c\u304a\u3059\u3059\u3081<\/strong>\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001<strong>JPEG\u306f\u900f\u660e\u90e8\u5206\uff08\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\uff09\u3092\u6301\u3066\u306a\u3044\u306e\u3067\u3001\u80cc\u666f\u304c\u629c\u3051\u3066\u3044\u308b\u30ed\u30b4\u7b49\u306e\u5834\u5408\u306f\u5fc5\u305aPNG\u3092\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/strong><\/p>\n<p>\u4e0b\u306e\u753b\u50cf\u306f\u30e1\u30fc\u30eb\u306e\u30a2\u30a4\u30b3\u30f3\u3092JPEG\u3001PNG\u306b\u5909\u63db\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30d5\u30eb\u30ab\u30e9\u30fc\u306ePNG\u306f24bit\u30ab\u30e9\u30fc\u306a\u306e\u3067\u300cPNG24\u300d\u3001\u6e1b\u8272\u3057\u305f\u3082\u306e\u306f8bit\u30ab\u30e9\u30fc\u306a\u306e\u3067\u300cPNG8\u300d\u3068\u8868\u8a18\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3082\u3068\u306e\u753b\u50cf\u3067\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u306b\u3088\u308a\u900f\u904e\u306b\u306a\u3063\u3066\u3044\u305f\u80cc\u666f\u304c\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u304c\u5931\u308f\u308c\u308b\u3053\u3068\u3067\u9ed2\u8272\u306b\u5909\u308f\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001JPEG\u306f\u5148\u306b\u3082\u8ff0\u3079\u305f\u3068\u304a\u308a\u30e1\u30ea\u30cf\u30ea\u306e\u3042\u308b\u753b\u50cf\u3068\u3042\u307e\u308a\u76f8\u6027\u304c\u826f\u304f\u306a\u3044\u305f\u3081\u3001\u672c\u6765\u540c\u3058\u8272\u3067\u3042\u308b\u306f\u305a\u306e\u90e8\u5206\u306b\u30ce\u30a4\u30ba\u304c\u8f09\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<div id=\"attachment_12507\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12507\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2019\/03\/mail_sample.png\" alt=\"\" class=\"wp-image-12507 size-full\" width=\"800\" height=\"378\" srcset=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2019\/03\/mail_sample.png 800w, https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2019\/03\/mail_sample-768x363.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-12507\" class=\"wp-caption-text\">\u900f\u904e\u975e\u5bfe\u5fdc\u306eJPEG\u306f\u80cc\u666f\u306b\u8272\u304c\u3064\u3044\u3066\u3057\u307e\u3063\u3066\u3044\u308b<\/p><\/div>\n<p>\u9069\u6750\u9069\u6240\u3068\u3044\u3046\u8a00\u8449\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u753b\u50cf\u3082\u540c\u3058\u3002\u3069\u3053\u306b\u4f7f\u3046\u3069\u3093\u306a\u753b\u50cf\u306a\u306e\u304b\u306b\u5408\u308f\u305b\u3066\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u9078\u3076\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>JPEG\u3001PNG\u304c\u305d\u308c\u305e\u308c\u5f97\u610f\u30fb\u82e6\u624b\u3068\u3059\u308b\u753b\u50cf\u306b\u3064\u3044\u3066\u306f\u300c<a href=\"https:\/\/www.webtech.co.jp\/blog\/web\/12486\/\" target=\"_blank\" rel=\"noopener\">Twitter\u6295\u7a3f\u6642\u306bJPEG\u306b\u5909\u63db\u3055\u308c\u306a\u3044PNG\u753b\u50cf\u306e\u6761\u4ef6<\/a>\u300d\u3068\u3044\u3046\u30d6\u30ed\u30b0\u8a18\u4e8b\u306e\u4e2d\u3067\u3082\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u3088\u308d\u3057\u3051\u308c\u3070\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u6c7a\u307e\u3063\u305f\u3089\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3001\u4fdd\u5b58\u6642\u306e\u8a2d\u5b9a\u306b\u3082\u8981\u6ce8\u610f<\/h2>\n<p>\u753b\u50cf\u306e\u5e45\u30fb\u9ad8\u3055\u3068\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u6c7a\u307e\u3063\u305f\u3089JPEG\u3084PNG\u3067\u4fdd\u5b58\u3057\u307e\u3059\u3002\u305e\u308c\u305e\u308c\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3054\u3068\u306b\u4fdd\u5b58\u6642\u306e\u8a2d\u5b9a\u306b\u3082\u7279\u9577\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>JPEG\u306f\u753b\u8cea\uff08\u5727\u7e2e\u7387\uff09\u3092\u6307\u5b9a\u53ef\u80fd\u3001\u753b\u50cf\u5bb9\u91cf\u306f\u753b\u50cf\u306e\u5185\u5bb9\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u5909\u308f\u308b<\/h3>\n<p>\u307e\u305aJPEG\u3067\u4fdd\u5b58\u3059\u308b\u5834\u5408\u3001\u591a\u304f\u306e\u30c4\u30fc\u30eb\u3067\u753b\u8cea\uff08\u30c4\u30fc\u30eb\u306b\u3088\u3063\u3066\u306f\u300c\u5727\u7e2e\u7387\u300d\u3068\u3044\u3046\u5834\u5408\u3082\u3042\u308a\uff09\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u753b\u8cea\u3092\u826f\u304f\u3059\u308c\u3070\u753b\u50cf\u5bb9\u91cf\u306f\u5927\u304d\u304f\u306a\u308a\u3001\u9006\u306b\u753b\u8cea\u3092\u4e0b\u3052\u308c\u3070\u753b\u50cf\u5bb9\u91cf\u306f\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002\u6982\u306d0\uff5e100\u3067\u6307\u5b9a\u3067\u304d\u3001\u6570\u5b57\u304c\u5927\u304d\u304f\u306a\u308b\u307b\u3069\u753b\u8cea\u306f\u826f\u304f\u306a\u308a\u3001\u305d\u308c\u306b\u4f34\u3063\u3066\u753b\u50cf\u5bb9\u91cf\u3082\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u753b\u8cea\u304c\u4e00\u5b9a\u3067\u3082\u5727\u7e2e\u3092\u304b\u3051\u3084\u3059\u3044\u3088\u3046\u306a\u753b\u50cf\u306e\u5185\u5bb9\u306e\u5834\u5408\u306f\u753b\u50cf\u5bb9\u91cf\u306f\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3057\u3001\u9006\u306b\u5727\u7e2e\u3092\u304b\u3051\u306b\u304f\u3044\u753b\u50cf\u306f\u753b\u50cf\u5bb9\u91cf\u304c\u5927\u304d\u3081\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e0b\u8a18\u306f1440px\u00d71920px\u306eJPEG\u753b\u50cf\u30923\u7a2e\u985e\u306e\u753b\u8cea\u8a2d\u5b9a\u3067\u4fdd\u5b58\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u753b\u50cf\u5bb9\u91cf\u306b\u3082\u5927\u304d\u306a\u5dee\u304c\u51fa\u3066\u3044\u307e\u3059\u304c\u3001\u753b\u8cea\u306e\u6570\u5024\u304c\u4f4e\u3044\u307b\u3069\u30ce\u30a4\u30ba\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u306e\u304c\u304a\u308f\u304b\u308a\u3044\u305f\u3060\u3051\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<div id=\"attachment_14841\" style=\"width: 1450px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-14841\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/05\/sample_q100.jpg\" alt=\"\" class=\"wp-image-14841 size-full\" width=\"1440\" height=\"1920\" \/><p id=\"caption-attachment-14841\" class=\"wp-caption-text\">\u753b\u8cea100 3.08MB<\/p><\/div>\n<div id=\"attachment_14843\" style=\"width: 1930px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-14843\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/05\/sample_q50.jpg\" alt=\"\" class=\"wp-image-14843 size-full\" width=\"1920\" height=\"1280\" \/><p id=\"caption-attachment-14843\" class=\"wp-caption-text\">\u753b\u8cea50 264KB<\/p><\/div>\n<div id=\"attachment_14842\" style=\"width: 1450px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-14842\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/05\/sample_q10.jpg\" alt=\"\" class=\"wp-image-14842 size-full\" width=\"1440\" height=\"1920\" \/><p id=\"caption-attachment-14842\" class=\"wp-caption-text\">\u753b\u8cea10 68KB<\/p><\/div>\n<p>\u753b\u8cea50\u3067\u3082\u30d1\u30c3\u3068\u898b\u3067\u5145\u5206\u306a\u54c1\u8cea\u304c\u5f97\u3089\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u770b\u677f\u306a\u3069\u3092\u62e1\u5927\u3057\u3066\u307f\u3066\u307f\u308b\u3068JPEG\u304c\u82e6\u624b\u3068\u3059\u308b\u300c\u30d9\u30bf\u5857\u308a\u300d\u306e\u90e8\u5206\u306b\u30e2\u30b9\u30ad\u30fc\u30c8\u30ce\u30a4\u30ba\u3068\u547c\u3070\u308c\u308bJPEG\u7279\u6709\u306e\u30ce\u30a4\u30ba\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/05\/sample_q100_q50.png\" alt=\"\" class=\"alignnone size-full wp-image-15200\" width=\"800\" height=\"400\" \/><\/p>\n<p>\u753b\u8cea50\u306e\u72b6\u614b\u3092\u53ef\u3068\u3059\u308b\u304b\u5426\u3068\u3059\u308b\u304b\u306f\u4eba\u306b\u3088\u3063\u3066\u8a55\u4fa1\u304c\u5909\u308f\u3063\u3066\u304f\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u30d6\u30ed\u30b0\u8a18\u4e8b\u7528\u306e\u753b\u50cf\u3067\u3042\u308c\u3070\u554f\u984c\u306a\u3044\u30ec\u30d9\u30eb\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001EC\u30b5\u30a4\u30c8\u306e\u5546\u54c1\u753b\u50cf\u306a\u3069\u62e1\u5927\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u5834\u5408\u306f\u53b3\u3057\u3044\u3001\u3068\u3044\u3063\u305f\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u307e\u305a\u306f\u54c1\u8cea\u3092\u8272\u3005\u5909\u3048\u305f\u4e0a\u3067\u4fdd\u5b58\u3057\u3066\u307f\u3066\u300c\u81ea\u5206\u306b\u3068\u3063\u3066\u59a5\u5f53\u306a\u54c1\u8cea\u306f\u3044\u304f\u3064\u304f\u3089\u3044\u306a\u306e\u304b\u300d\u3092\u628a\u63e1\u3057\u3001\u305d\u306e\u5024\u3092\u30d9\u30fc\u30b9\u306b\u3001\u753b\u50cf\u306b\u5408\u308f\u305b\u3066\u300c\u3061\u3087\u3046\u3069\u3044\u3044\u611f\u3058\u306e\u54c1\u8cea\u5024\u300d\u3092\u63a2\u3063\u3066\u3044\u304f\u306e\u304c\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305f\u3001\u591a\u304f\u306e\u30c4\u30fc\u30eb\u3067\u4fdd\u5b58\u524d\u30d7\u30ec\u30d3\u30e5\u30fc\u304c\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u3058\u3063\u304f\u308a\u541f\u5473\u3057\u3066\u304b\u3089\u4fdd\u5b58\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u54c1\u8cea\u306f\u30c4\u30fc\u30eb\u306b\u4efb\u305b\u3066\u3057\u307e\u3046\u3001\u3068\u3044\u3046\u306e\u3082\u4e00\u3064\u306e\u624b<\/h3>\n<p>\u300c\u7d30\u304b\u3044\u6570\u5024\u8abf\u6574\u7121\u3057\u3067\u3044\u3044\u611f\u3058\u306b\u753b\u50cf\u5bb9\u91cf\u5c0f\u3055\u304f\u3057\u3066\u307b\u3057\u3044\u3001\u898b\u305f\u76ee\u304c\u304a\u304b\u3057\u304f\u306a\u3051\u308c\u3070\u305d\u308c\u3067\u3044\u3044\u304b\u3089\u300d\u3068\u3044\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u306e\u5834\u5408\u306f\u753b\u50cf\u30c4\u30fc\u30eb\u5074\u306e\u300c\u9ad8\u753b\u8cea\u300d\u300c\u4e2d\u753b\u8cea\u300d\u306a\u3069\u306e\u30d7\u30ea\u30bb\u30c3\u30c8\u306b\u307e\u304b\u305b\u3066\u3057\u307e\u3046\u306e\u3082\u4e00\u3064\u306e\u624b\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u5f0a\u793e\u306e\u753b\u50cf\u8efd\u91cf\u5316\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3<a href=\"https:\/\/www.webtech.co.jp\/smartjpeg\/\" target=\"_blank\" rel=\"noopener\">\u300cSmartJPEG\u300d<\/a>\u3067\u306f\u753b\u50cf\u306e\u5185\u5bb9\u3092\u81ea\u52d5\u3067\u5224\u5b9a\u3057\u3001\u753b\u8cea\u306e\u5909\u308f\u3089\u306a\u3044\u30ec\u30d9\u30eb\u3067\u753b\u50cf\u5bb9\u91cf\u3092\u6700\u5927\u30679\u5272\u5c0f\u3055\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Linux\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u7d44\u307f\u8fbc\u3093\u3067\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u753b\u50cf\u3092\u81ea\u52d5\u3067\u6700\u9069\u5316\u3059\u308b\u3082\u306e\u3001\u30af\u30e9\u30a6\u30c9\u4e0a\u3067\u753b\u50cf\u3092\u6700\u9069\u5316\u3057\u3066\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u306b\u914d\u4fe1\u3059\u308b\u3082\u306e\u3001Photoshop\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3082\u306e\u3001\u69d8\u3005\u306a\u5f62\u614b\u3067\u63d0\u4f9b\u3092\u304a\u3053\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/www.webtech.co.jp\/smartjpeg\/\" rel=\"noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2019\/10\/smartjpeglogow600.png\" alt=\"\" class=\"size-full wp-image-13049 aligncenter\" width=\"600\" height=\"80\" \/><\/a><\/p>\n<p>EC\u30b5\u30a4\u30c8\u3084\u60c5\u5831\u30b5\u30a4\u30c8\u306a\u3069\u3067\u306f\u3001\u753b\u50cf\u306e\u70b9\u6570\u304c\u6570\u4e07\u70b9\u306b\u53ca\u3073\u307e\u3059\u3002\u307e\u305f\u3001\u6bce\u65e5\u306e\u3088\u3046\u306b\u5927\u91cf\u306e\u753b\u50cf\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u8ffd\u52a0\u3055\u308c\u3066\u3044\u304d\u307e\u3059\u3002\u54c1\u8cea\u3092\u78ba\u4fdd\u3057\u3064\u3064\u81ea\u52d5\u3067\u6700\u9069\u5316\u51e6\u7406\u3092\u3055\u305b\u305f\u3044\u5834\u5408\u3084\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u5236\u4f5c\u5074\u306e\u753b\u50cf\u6700\u9069\u5316\u306e\u8ca0\u62c5\u3092\u4e0b\u3052\u305f\u3044\u5834\u5408\u306fSmartJPEG\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306bSmartJPEG\u3067\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u753b\u50cf\u3092\u6700\u9069\u5316\u3057\u305f\u3082\u306e\u3092\u898b\u3066\u307f\u305f\u3044\u3001\u3068\u3044\u3046\u65b9\u306f\u304a\u6c17\u8efd\u306b<a href=\"https:\/\/www.webtech.co.jp\/smartjpeg\/form.html\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u306e\u300c\u30da\u30fc\u30b8\u304c\u3069\u306e\u304f\u3089\u3044\u8efd\u304f\u306a\u308b\u304b\u77e5\u308a\u305f\u3044\u300d\u304b\u3089\u3054\u9023\u7d61\u304f\u3060\u3055\u3044\u3002<\/a><\/p>\n<h3>PNG\u306e\u753b\u50cf\u5bb9\u91cf\u3092\u6e1b\u3089\u3059\u5834\u5408\u306f\u300c\u6e1b\u8272\u300d\u3092\u884c\u3046<\/h3>\n<p>\u6b21\u306bPNG\u3067\u3059\u3002PNG\u306fJPEG\u3068\u306f\u5727\u7e2e\u51e6\u7406\u306e\u4ed5\u7d44\u307f\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u753b\u8cea\u3084\u54c1\u8cea\u3092\u6570\u5024\u3067\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u5727\u7e2e\u51e6\u7406\u306b\u306f\u6642\u9593\u306e\u304b\u304b\u308b\u6f14\u7b97\u4f5c\u696d\u304c\u5fc5\u8981\u306a\u305f\u3081\u3001\u30c4\u30fc\u30eb\u306b\u3088\u3063\u3066\u306f\u5727\u7e2e\u51e6\u7406\u3092\u7701\u3044\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<div id=\"attachment_14847\" style=\"width: 470px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-14847\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/02\/ps_png_save.png\" alt=\"\" class=\"wp-image-14847 size-full\" width=\"460\" height=\"395\" \/><p id=\"caption-attachment-14847\" class=\"wp-caption-text\">Photoshop\u306e\u300cWeb\u7528\u306b\u4fdd\u5b58\u300d\u30c0\u30a4\u30a2\u30ed\u30b0\u3002PNG\u3067\u306f\u753b\u8cea\u3092\u8a2d\u5b9a\u3067\u304d\u306a\u3044<\/p><\/div>\n<p>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u7279\u6027\u4e0a\u3001PNG\u306e\u5834\u5408\u306f\u4f7f\u7528\u3057\u3066\u3044\u308b\u8272\u6570\u3092256\u8272\u4ee5\u4e0b\u306b\u6e1b\u3089\u3059\u300c\u6e1b\u8272\u51e6\u7406\u300d\u306b\u3088\u3063\u3066\u753b\u50cf\u5bb9\u91cf\u3092\u6e1b\u3089\u3059\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u6e1b\u8272\u51e6\u7406\u3092\u884c\u3046\u3053\u3068\u3067\u753b\u50cf\u5bb9\u91cf\u306f\u5927\u5e45\u306b\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u5358\u7d14\u306b\u6e1b\u8272\u51e6\u7406\u3092\u3059\u308b\u3060\u3051\u3067\u306f\u753b\u50cf\u306e\u54c1\u8cea\u306b\u5f71\u97ff\u304c\u51fa\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f7f\u3048\u308b\u8272\u6570\u304c1\/65536\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u304b\u3089\u3001\u4ed5\u65b9\u306a\u3044\u3068\u3053\u3067\u306f\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e0b\u306e\u3088\u3046\u306b\u8272\u6570\u304c\u3042\u308a\u3001\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u753b\u50cf\u306f\u6e1b\u8272\u3057\u305f\u969b\u306b\u8272\u6570\u304c\u4e0d\u8db3\u3057\u3001\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u90e8\u5206\u306b\u30c9\u30c3\u30c8\u304c\u76ee\u7acb\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<div id=\"attachment_15384\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15384\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/pencil.png\" alt=\"\" class=\"wp-image-15384 size-full\" width=\"600\" height=\"400\" \/><p id=\"caption-attachment-15384\" class=\"wp-caption-text\">\u5143\u753b\u50cf\uff08PNG24) 240KB<\/p><\/div>\n<div id=\"attachment_15385\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15385\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/pencil8bitps.png\" alt=\"\" class=\"wp-image-15385 size-full\" width=\"600\" height=\"400\" \/><p id=\"caption-attachment-15385\" class=\"wp-caption-text\">\u4e00\u822c\u7684\u306a\u753b\u50cf\u30c4\u30fc\u30eb\u3067PNG8\u306b\u6e1b\u8272\u3057\u305f\u3082\u306e 81.5KB<\/p><\/div>\n<p>\u624b\u524d\u5473\u564c\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u300c\u6e1b\u8272\u51e6\u7406\u300d\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u305d\u306e\u30c4\u30fc\u30eb\u306e\u826f\u3057\u60aa\u3057\u304c\u51fa\u3066\u304d\u307e\u3059\u3002\u5f0a\u793e\u306eImageStudio\u30b7\u30ea\u30fc\u30ba\u3067\u6e1b\u8272\u3059\u308b\u3068\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div id=\"attachment_15390\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-15390\" src=\"https:\/\/www.webtech.co.jp\/blog\/wp-content\/uploads\/2021\/06\/pencil8bitis.png\" alt=\"\" class=\"wp-image-15390 size-full\" width=\"600\" height=\"400\" \/><p id=\"caption-attachment-15390\" class=\"wp-caption-text\">\u5f0a\u793eOPTPiX ImageStudio 8\u3067256\u8272\u306b\u6e1b\u8272 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\u753b\u50cf\u5bb9\u91cf\u3092\u5c0f\u3055\u304f\u3059\u308b\u65b9\u6cd5\u3001\u524d\u56de\u306f\u753b\u50cf\u30b5\u30a4\u30ba\u306b\u3064\u3044\u3066\u306e\u57fa\u790e\u77e5\u8b58\u3084\u30d4\u30af\u30bb\u30eb\u5bc6\u5ea6\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u753b\u50cf\u306e\u6700\u9069\u5316\u51e6\u7406\u306f\u4e3b\u306bPC\u3067\u884c\u3046\u3053\u3068\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3092\u898b\u308b\u74b0\u5883\u304c\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u5834\u5408\u306f\u30ea\u30b5\u30a4 &hellip; <a href=\"https:\/\/www.webtech.co.jp\/blog\/optpix_labs\/15219\/\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":26,"featured_media":15411,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[321],"tags":[172,38,75,762,60,54,52],"class_list":["post-15219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-optpix_labs","tag-gif","tag-jpeg","tag-png","tag-webp","tag-60","tag-54","tag-52"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u753b\u50cf\u5bb9\u91cf\u3092\u5c0f\u3055\u304f\u3059\u308b\u65b9\u6cd5\uff1a\u7b2c3\u56de \u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u7a2e\u985e\u3068\u9069\u6027 - OPTPiX Labs Blog<\/title>\n<meta name=\"description\" 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