{"id":23729,"date":"2026-09-20T18:09:19","date_gmt":"2026-09-20T09:09:19","guid":{"rendered":"https:\/\/cg-method.com\/work-tools\/?p=23729"},"modified":"2026-09-20T18:09:19","modified_gmt":"2026-09-20T09:09:19","slug":"png-to-webp-conversion","status":"publish","type":"post","link":"https:\/\/cg-method.com\/work-tools\/png-to-webp-conversion\/","title":{"rendered":"PNG\u3092WebP\u306b\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u6c7a\u3081\u65b9\uff5c\u53ef\u9006\u3068\u975e\u53ef\u9006\u3067\u3069\u308c\u3060\u3051\u5909\u308f\u308b\u304b\u6e2c\u3063\u305f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u753b\u50cf\u3092WebP\u306b\u3059\u308b\u3068\u8efd\u304f\u306a\u308b\u3068\u8a00\u308f\u308c\u308b\u304c\u3001\u3069\u308c\u3060\u3051\u5c0f\u3055\u304f\u306a\u308b\u304b\u306f\u8a2d\u5b9a\u3068\u753b\u50cf\u306e\u4e2d\u8eab\u3067\u5909\u308f\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u63db\u306e\u65b9\u5f0f\u306b\u306f\u3001\u5143\u306e\u753b\u7d20\u3092\u305d\u306e\u307e\u307e\u4fdd\u3064\u3082\u306e\u3068\u3001\u60c5\u5831\u3092\u6368\u3066\u3066\u5c0f\u3055\u304f\u3059\u308b\u3082\u306e\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u306f\u3001\u5b9f\u969b\u306b\u624b\u5143\u3067\u5909\u63db\u3057\u3066\u6e2c\u3063\u305f\u6570\u5024\u3092\u3082\u3068\u306b\u3001\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u306e\u8003\u3048\u65b9\u3092\u6574\u7406\u3059\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6e2c\u5b9a\u306f2026\u5e749\u670820\u65e5\u306bPython 3.13\u3068Pillow 12.3.0\u3067\u5b9f\u884c\u3057\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u969b\u306b\u6e2c\u3063\u305f\u6570\u5024<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u753b\u50cf\u3092PNG\u3068WebP\u3067\u4fdd\u5b58\u3057\u3001\u5927\u304d\u3055\u3068\u3001\u5143\u306e\u753b\u7d20\u3068\u306e\u5dee\u3092\u6bd4\u3079\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u679a\u76ee\u306f\u6587\u5b57\u3068\u5358\u8272\u306e\u9762\u304c\u591a\u3044\u753b\u50cf\uff081280\u00d7720\uff09\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"min-width:8em !important\">\u4fdd\u5b58\u306e\u4ed5\u65b9<\/th><th>\u5927\u304d\u3055<\/th><th>PNG\u6bd4<\/th><th>\u5143\u3068\u4e00\u81f4<\/th><th>\u753b\u7d20\u306e\u5e73\u5747\u5dee<\/th><th>\u6700\u5927\u5dee<\/th><\/tr><\/thead><tbody><tr><td>PNG<\/td><td>82,785 \u30d0\u30a4\u30c8<\/td><td>100%<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>WebP \u53ef\u9006<\/td><td>45,614 \u30d0\u30a4\u30c8<\/td><td>55.1%<\/td><td>\u4e00\u81f4\u3059\u308b<\/td><td>0<\/td><td>0<\/td><\/tr><tr><td>WebP \u54c1\u8cea90<\/td><td>14,908 \u30d0\u30a4\u30c8<\/td><td>18.0%<\/td><td>\u4e00\u81f4\u3057\u306a\u3044<\/td><td>1.08<\/td><td>19<\/td><\/tr><tr><td>WebP \u54c1\u8cea80<\/td><td>10,986 \u30d0\u30a4\u30c8<\/td><td>13.3%<\/td><td>\u4e00\u81f4\u3057\u306a\u3044<\/td><td>1.14<\/td><td>35<\/td><\/tr><tr><td>WebP \u54c1\u8cea75<\/td><td>9,700 \u30d0\u30a4\u30c8<\/td><td>11.7%<\/td><td>\u4e00\u81f4\u3057\u306a\u3044<\/td><td>1.17<\/td><td>38<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u6587\u5b57\u3068\u5358\u8272\u306e\u9762\u304c\u591a\u3044\u753b\u50cf\u3067\u306e\u5b9f\u6e2c\uff082026\u5e749\u670820\u65e5\uff09<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2\u679a\u76ee\u306f\u5225\u306e\u56f3\u7248\uff081280\u00d7720\uff09\u3067\u3001\u50be\u5411\u306f\u540c\u3058\u3060\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"min-width:8em !important\">\u4fdd\u5b58\u306e\u4ed5\u65b9<\/th><th>\u5927\u304d\u3055<\/th><th>PNG\u6bd4<\/th><th>\u753b\u7d20\u306e\u5e73\u5747\u5dee<\/th><th>\u6700\u5927\u5dee<\/th><\/tr><\/thead><tbody><tr><td>PNG<\/td><td>91,319 \u30d0\u30a4\u30c8<\/td><td>100%<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>WebP \u53ef\u9006<\/td><td>51,652 \u30d0\u30a4\u30c8<\/td><td>56.6%<\/td><td>0<\/td><td>0<\/td><\/tr><tr><td>WebP \u54c1\u8cea90<\/td><td>15,454 \u30d0\u30a4\u30c8<\/td><td>16.9%<\/td><td>0.99<\/td><td>16<\/td><\/tr><tr><td>WebP \u54c1\u8cea80<\/td><td>11,356 \u30d0\u30a4\u30c8<\/td><td>12.4%<\/td><td>1.07<\/td><td>23<\/td><\/tr><tr><td>WebP \u54c1\u8cea75<\/td><td>9,966 \u30d0\u30a4\u30c8<\/td><td>10.9%<\/td><td>1.10<\/td><td>31<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5225\u306e\u56f3\u7248\u3067\u306e\u5b9f\u6e2c\uff082026\u5e749\u670820\u65e5\uff09<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e73\u5747\u5dee\u3068\u6700\u5927\u5dee\u306f\u30010\u304b\u3089255\u307e\u3067\u306e\u5024\u3068\u3057\u3066\u306e\u5dee\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e73\u5747\u304c1\u524d\u5f8c\u3067\u3082\u6700\u5927\u304c30\u3092\u8d85\u3048\u308b\u7b87\u6240\u304c\u3042\u308a\u3001\u5dee\u306f\u753b\u50cf\u5168\u4f53\u306b\u5747\u7b49\u3067\u306f\u306a\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2\u3064\u306e\u65b9\u5f0f\u306e\u9055\u3044<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"min-width:8em !important\">\u65b9\u5f0f<\/th><th>\u753b\u7d20<\/th><th>\u5c0f\u3055\u3055<\/th><th>\u5411\u3044\u3066\u3044\u308b\u753b\u50cf<\/th><\/tr><\/thead><tbody><tr><td>\u53ef\u9006<\/td><td>\u5143\u3068\u5b8c\u5168\u306b\u540c\u3058<\/td><td>PNG\u306e\u7d0455%<\/td><td>\u56f3\u7248\u3001\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3001\u900f\u904e\u304c\u8981\u308b\u3082\u306e<\/td><\/tr><tr><td>\u975e\u53ef\u9006<\/td><td>\u308f\u305a\u304b\u306b\u5909\u308f\u308b<\/td><td>PNG\u306e1\u301c2\u5272<\/td><td>\u5199\u771f\u3001\u7d30\u304b\u3044\u968e\u8abf\u304c\u591a\u3044\u3082\u306e<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u65b9\u5f0f\u306b\u3088\u308b\u9055\u3044<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u9006\u3067\u3082PNG\u304b\u3089\u534a\u5206\u8fd1\u304f\u307e\u3067\u843d\u3061\u308b\u305f\u3081\u3001\u753b\u7d20\u3092\u5909\u3048\u305f\u304f\u306a\u3044\u5834\u5408\u3067\u3082\u7f6e\u304d\u63db\u3048\u308b\u4fa1\u5024\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3067\u3001\u975e\u53ef\u9006\u306b\u3059\u308b\u30681\u5272\u53f0\u307e\u3067\u843d\u3061\u308b\u306e\u3067\u3001\u5dee\u304c\u5927\u304d\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5dee\u3092\u3069\u3046\u53d7\u3051\u53d6\u308b\u304b\u306f\u3001\u305d\u306e\u753b\u50cf\u304c\u4f55\u306b\u4f7f\u308f\u308c\u308b\u304b\u3067\u5909\u308f\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u306e\u6c7a\u3081\u65b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u753b\u50cf\u306e\u4e2d\u8eab\u3088\u308a\u5148\u306b\u3001\u305d\u306e\u753b\u50cf\u306b\u6c42\u3081\u308b\u6027\u8cea\u3092\u6c7a\u3081\u308b\u307b\u3046\u304c\u65e9\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"min-width:8em !important\">\u6c42\u3081\u308b\u6027\u8cea<\/th><th>\u9078\u3076\u65b9\u5f0f<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u6587\u5b57\u304c\u306b\u3058\u3093\u3067\u306f\u56f0\u308b<\/td><td>\u53ef\u9006<\/td><td>\u975e\u53ef\u9006\u306f\u8f2a\u90ed\u306e\u5468\u308a\u306b\u5dee\u304c\u51fa\u308b<\/td><\/tr><tr><td>\u8272\u3092\u6b63\u78ba\u306b\u4f1d\u3048\u305f\u3044<\/td><td>\u53ef\u9006<\/td><td>\u753b\u7d20\u304c\u5909\u308f\u3089\u306a\u3044<\/td><\/tr><tr><td>\u8aad\u307f\u8fbc\u307f\u3092\u8efd\u304f\u3057\u305f\u3044<\/td><td>\u975e\u53ef\u9006<\/td><td>1\u5272\u53f0\u307e\u3067\u843d\u3061\u308b<\/td><\/tr><tr><td>\u5143\u753b\u50cf\u3068\u3057\u3066\u4fdd\u7ba1\u3059\u308b<\/td><td>\u53ef\u9006\u307e\u305f\u306fPNG\u306e\u307e\u307e<\/td><td>\u3042\u3068\u304b\u3089\u4f5c\u308a\u76f4\u305b\u308b<\/td><\/tr><tr><td>\u900f\u904e\u304c\u8981\u308b<\/td><td>\u3069\u3061\u3089\u3082\u53ef<\/td><td>WebP\u306f\u900f\u904e\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u6c42\u3081\u308b\u6027\u8cea\u304b\u3089\u65b9\u5f0f\u3092\u6c7a\u3081\u308b<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3084\u56f3\u7248\u3067\u6587\u5b57\u304c\u5165\u3063\u3066\u3044\u308b\u3082\u306e\u306f\u3001\u975e\u53ef\u9006\u306b\u3059\u308b\u3068\u8f2a\u90ed\u306e\u5468\u308a\u306b\u5dee\u304c\u51fa\u3084\u3059\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u6e2c\u3067\u3082\u3001\u6587\u5b57\u3068\u5358\u8272\u306e\u9762\u304c\u591a\u3044\u753b\u50cf\u306e\u307b\u3046\u304c\u6700\u5927\u5dee\u304c\u5927\u304d\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30aa\u30f3\u30e9\u30a4\u30f3\u306e\u5909\u63db\u3092\u4f7f\u3046\u3068\u304d\u306b\u898b\u308b\u3068\u3053\u308d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u30fc\u3067\u5909\u63db\u3067\u304d\u308b\u30b5\u30fc\u30d3\u30b9\u306f\u591a\u3044\u304c\u3001\u78ba\u304b\u3081\u3066\u304a\u304d\u305f\u3044\u70b9\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u53ef\u9006\u3068\u975e\u53ef\u9006\u3092\u9078\u3079\u308b\u304b\uff08\u9078\u3079\u306a\u3044\u3082\u306e\u306f\u975e\u53ef\u9006\u306e\u3053\u3068\u304c\u591a\u3044\uff09<\/li>\n\n\n<li>\u54c1\u8cea\u306e\u6570\u5024\u3092\u6307\u5b9a\u3067\u304d\u308b\u304b<\/li>\n\n\n<li>\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3069\u3053\u3078\u9001\u3089\u308c\u308b\u304b\uff08\u624b\u5143\u3067\u51e6\u7406\u3059\u308b\u3082\u306e\u3068\u3001\u9001\u4fe1\u3059\u308b\u3082\u306e\u304c\u3042\u308b\uff09<\/li>\n\n\n<li>\u5909\u63db\u5f8c\u306b\u30b5\u30a4\u30ba\u3092\u78ba\u304b\u3081\u3089\u308c\u308b\u304b<\/li>\n\n\n<li>\u900f\u904e\u304c\u6b8b\u308b\u304b<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u516c\u958b\u524d\u306e\u8cc7\u6599\u3084\u3001\u4ed6\u4eba\u304b\u3089\u9810\u304b\u3063\u305f\u753b\u50cf\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u9001\u4fe1\u306e\u6709\u7121\u3092\u5148\u306b\u78ba\u304b\u3081\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u624b\u5143\u3067\u51e6\u7406\u3059\u308b\u5f62\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u3042\u308c\u3070\u3001\u30d5\u30a1\u30a4\u30eb\u306f\u5916\u306b\u51fa\u306a\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u624b\u5143\u3067\u5909\u63db\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u8a2d\u5b9a\u3067\u4f55\u679a\u3082\u5909\u63db\u3059\u308b\u306a\u3089\u3001\u624b\u5143\u3067\u51e6\u7406\u3059\u308b\u307b\u3046\u304c\u65e9\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Python\u306ePillow\u3092\u4f7f\u3046\u5834\u5408\u306f\u3053\u3046\u66f8\u3051\u308b\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\"><code>from pathlib import Path\nfrom PIL import Image\n\nfor src in Path(\"\u5bfe\u8c61\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\").glob(\"*.png\"):\n    im = Image.open(src)\n    # \u753b\u7d20\u3092\u5909\u3048\u306a\u3044\n    im.save(src.with_suffix(\".webp\"), \"WEBP\", lossless=True)\n    # \u5c0f\u3055\u304f\u3057\u305f\u3044\u5834\u5408\n    # im.save(src.with_suffix(\".webp\"), \"WEBP\", quality=80)<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u63db\u3057\u305f\u3042\u3068\u3001\u5143\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u304b\u3081\u305f\u3044\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306b\u3059\u308b\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\"><code>from PIL import Image, ImageChops, ImageStat\n\na = Image.open(\"\u5143.png\").convert(\"RGB\")\nb = Image.open(\"\u5909\u63db\u5f8c.webp\").convert(\"RGB\")\nd = ImageChops.difference(a, b)\nprint(\"\u4e00\u81f4:\", d.getbbox() is None)\nprint(\"\u5e73\u5747\u5dee:\", [round(x, 2) for x in ImageStat.Stat(d).mean])<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067RGBA\u306b\u5909\u63db\u3057\u3066\u6bd4\u3079\u308b\u3068\u3001\u4e0d\u900f\u660e\u306a\u753b\u50cf\u3069\u3046\u3057\u3067\u306f\u5dee\u304c\u51fa\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306b\u3053\u306e\u66f8\u304d\u65b9\u3067\u6e2c\u3063\u305f\u3068\u304d\u306f\u3001\u975e\u53ef\u9006\u3067\u5727\u7e2e\u3057\u305f\u3082\u306e\u307e\u3067\u4e00\u81f4\u3068\u51fa\u3066\u3057\u307e\u3063\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bd4\u3079\u308b\u3068\u304d\u306fRGB\u306b\u305d\u308d\u3048\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7f6e\u304d\u63db\u3048\u308b\u3068\u304d\u306b\u6c17\u3092\u3064\u3051\u308b\u3053\u3068<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u5143\u306ePNG\u3092\u6d88\u3059\u524d\u306b\u3001\u5909\u63db\u5f8c\u306e\u898b\u305f\u76ee\u3092\u5b9f\u969b\u306b\u958b\u3044\u3066\u78ba\u304b\u3081\u308b<\/li>\n\n\n<li>\u5dee\u3057\u66ff\u3048\u308b\u306a\u3089URL\u3082\u5909\u308f\u308b\u305f\u3081\u3001\u53c2\u7167\u3057\u3066\u3044\u308b\u5834\u6240\u3092\u3059\u3079\u3066\u76f4\u3059<\/li>\n\n\n<li>\u5370\u5237\u3084\u518d\u7de8\u96c6\u306b\u4f7f\u3046\u5143\u30c7\u30fc\u30bf\u306f\u3001PNG\u306e\u307e\u307e\u6b8b\u3057\u3066\u304a\u304f<\/li>\n\n\n<li>\u540c\u3058\u8a2d\u5b9a\u3067\u5168\u90e8\u3092\u5909\u63db\u305b\u305a\u3001\u6587\u5b57\u306e\u591a\u3044\u753b\u50cf\u3060\u3051\u53ef\u9006\u306b\u3059\u308b\u306a\u3069\u5206\u3051\u308b<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bb9\u91cf\u3092\u524a\u308b\u3053\u3068\u3060\u3051\u3092\u76ee\u7684\u306b\u3059\u308b\u3068\u3001\u3042\u3068\u304b\u3089\u4f5c\u308a\u76f4\u305b\u306a\u3044\u753b\u50cf\u3092\u975e\u53ef\u9006\u306b\u3057\u3066\u3057\u307e\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u5b9f\u6e2c\u3067\u306f\u3001\u53ef\u9006\u3067PNG\u306e\u7d0455%\u3001\u54c1\u8cea80\u3067\u7d0413%\u307e\u3067\u843d\u3061\u305f<\/li>\n\n\n<li>\u53ef\u9006\u306f\u753b\u7d20\u304c\u5143\u3068\u5b8c\u5168\u306b\u4e00\u81f4\u3057\u3001\u975e\u53ef\u9006\u306f\u5e73\u57471\u524d\u5f8c\u3001\u6700\u592730\u4ee5\u4e0a\u306e\u5dee\u304c\u51fa\u305f<\/li>\n\n\n<li>\u6587\u5b57\u3084\u56f3\u7248\u306f\u53ef\u9006\u3001\u5199\u771f\u306f\u975e\u53ef\u9006\u3068\u3044\u3046\u5206\u3051\u65b9\u304c\u6271\u3044\u3084\u3059\u3044<\/li>\n\n\n<li>\u30aa\u30f3\u30e9\u30a4\u30f3\u306e\u5909\u63db\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u9001\u4fe1\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u5148\u306b\u78ba\u304b\u3081\u308b<\/li>\n\n\n<li>\u6bd4\u3079\u308b\u3068\u304d\u306fRGB\u306b\u305d\u308d\u3048\u308b\u3002RGBA\u3060\u3068\u5dee\u304c\u51fa\u306a\u3044\u3053\u3068\u304c\u3042\u308b<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6e2c\u5b9a\u306f2026\u5e749\u670820\u65e5\u306bPython 3.13\u3068Pillow 12.3.0\u3067\u5b9f\u884c\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u753b\u50cf\u306e\u4e2d\u8eab\u306b\u3088\u3063\u3066\u6570\u5024\u306f\u5909\u308f\u308b\u305f\u3081\u3001\u81ea\u5206\u304c\u6271\u3046\u753b\u50cf\u3067\u6e2c\u308a\u76f4\u3057\u3066\u307b\u3057\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WebP\u306e\u4ed5\u69d8\u306f<a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/compression\" target=\"_blank\" rel=\"noopener\">Google\u306e\u6280\u8853\u8cc7\u6599<\/a>\u306b\u307e\u3068\u307e\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f5c\u696d\u3092\u697d\u306b\u3059\u308b\u9053\u5177\u306f<a href=\"https:\/\/cg-method.com\/work-tools\/\">PC\u30e1\u30bd\u30c3\u30c9\u306e\u307e\u3068\u3081<\/a>\u306b\u3082\u7f6e\u3044\u3066\u3044\u308b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u753b\u50cf\u3092WebP\u306b\u3059\u308b\u3068\u8efd\u304f\u306a\u308b\u3068\u8a00\u308f\u308c\u308b\u304c\u3001\u3069\u308c\u3060\u3051\u5c0f\u3055\u304f\u306a\u308b\u304b\u306f\u8a2d\u5b9a\u3068\u753b\u50cf\u306e\u4e2d\u8eab\u3067\u5909\u308f\u308b\u3002 \u5909\u63db\u306e\u65b9\u5f0f\u306b\u306f\u3001\u5143\u306e\u753b\u7d20\u3092\u305d\u306e\u307e\u307e\u4fdd\u3064\u3082\u306e\u3068\u3001\u60c5\u5831\u3092\u6368\u3066\u3066\u5c0f\u3055\u304f\u3059\u308b\u3082\u306e\u304c\u3042\u308b\u3002 \u3053\u3053\u3067\u306f\u3001\u5b9f\u969b\u306b\u624b\u5143\u3067\u5909\u63db\u3057\u3066\u6e2c\u3063\u305f\u6570\u5024\u3092\u3082 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23730,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"","swell_btn_cv_data":"","ssp_meta_description":"PNG\u3092WebP\u306b\u5909\u63db\u3059\u308b\u3068\u3001\u53ef\u9006\u3067\u306f\u7d0455%\u3001\u54c1\u8cea80\u3067\u306f\u7d0413%\u307e\u3067\u30d5\u30a1\u30a4\u30eb\u304c\u5c0f\u3055\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u5b9f\u969b\u306b\u6e2c\u3063\u305f\u6570\u5024\u3092\u3082\u3068\u306b\u3001\u53ef\u9006\u3068\u975e\u53ef\u9006\u306e\u9078\u3073\u5206\u3051\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u306e\u5909\u63db\u3092\u4f7f\u3046\u3068\u304d\u306e\u5224\u65ad\u6750\u6599\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002","ssp_meta_title":"PNG\u3092WebP\u306b\u5909\u63db\u3059\u308b\u3068\u304d\u306e\u6c7a\u3081\u65b9\u3068\u5b9f\u6e2c\u5024","ssp_meta_robots":"","ssp_meta_canonical":"","ssp_meta_image":"","ssp_meta_keyword":"","book_review_data":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-23729","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/posts\/23729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/comments?post=23729"}],"version-history":[{"count":1,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/posts\/23729\/revisions"}],"predecessor-version":[{"id":23731,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/posts\/23729\/revisions\/23731"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/media\/23730"}],"wp:attachment":[{"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/media?parent=23729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/categories?post=23729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cg-method.com\/work-tools\/wp-json\/wp\/v2\/tags?post=23729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}