[{"data":1,"prerenderedAt":831},["ShallowReactive",2],{"blog-post-/blog/ja-jp/how-to-prepare-product-images-for-ecommerce":3,"related-posts-/ja-JP/blog/how-to-prepare-product-images-for-ecommerce":212},{"id":4,"title":5,"author":6,"body":7,"category":194,"date":195,"description":196,"extension":197,"featured":198,"image":199,"meta":200,"navigation":201,"path":202,"readingTime":203,"seo":204,"stem":205,"tags":206,"tools":210,"__hash__":211},"content/blog/ja-JP/how-to-prepare-product-images-for-ecommerce.md","EC向けの商品画像を準備する方法","Anything Tools Editorial",{"type":8,"value":9,"toc":183},"minimark",[10,14,18,37,42,45,48,70,73,77,80,83,97,101,104,115,121,125,128,134,138,149,153,156,176,180],[11,12,5],"h1",{"id":13},"ec向けの商品画像を準備する方法",[15,16,17],"p",{},"Product images affect page speed, buyer confidence, and conversion rate. Images that are too large slow down the store. Images that are too small make details hard to inspect. The wrong format can also break transparency, color quality, or file size.",[15,19,20,21,26,27,31,32,36],{},"Before uploading product photos, you can prepare them with the ",[22,23,25],"a",{"href":24},"/image/resizer","Anything Tools Image Resizer",", ",[22,28,30],{"href":29},"/image/compressor","Image Compressor",", and ",[22,33,35],{"href":34},"/image/converter","Image Converter",".",[38,39,41],"h2",{"id":40},"start-with-the-image-purpose","Start with the image purpose",[15,43,44],{},"Different placements need different image sizes. Avoid uploading one oversized original everywhere.",[15,46,47],{},"Common e-commerce image placements include:",[49,50,51,55,58,61,64,67],"ul",{},[52,53,54],"li",{},"main product image",[52,56,57],{},"product gallery image",[52,59,60],{},"thumbnail",[52,62,63],{},"category page image",[52,65,66],{},"email or ad creative",[52,68,69],{},"social sharing image",[15,71,72],{},"A main product image should preserve detail. A thumbnail should load quickly and keep the product shape recognizable.",[38,74,76],{"id":75},"resize-images-before-upload","Resize images before upload",[15,78,79],{},"Most stores do not need product images that are several thousand pixels wide. Choose a target size based on the store template or marketplace requirement, then resize before upload.",[15,81,82],{},"Practical rules:",[49,84,85,88,91,94],{},[52,86,87],{},"keep main images square or use one consistent ratio",[52,89,90],{},"use the same size within a product category",[52,92,93],{},"avoid uploading images far larger than their display size",[52,95,96],{},"keep enough resolution for high-density screens without overdoing it",[38,98,100],{"id":99},"choose-the-right-image-format","Choose the right image format",[15,102,103],{},"Format choice affects transparency, quality, and file size.",[49,105,106,109,112],{},[52,107,108],{},"JPG works well for standard product photography",[52,110,111],{},"PNG is useful for transparent backgrounds, logos, and screenshots",[52,113,114],{},"WebP is often a good balance between quality and small file size",[15,116,117,118,120],{},"If the original format is not ideal, convert it with the ",[22,119,35],{"href":34}," before publishing.",[38,122,124],{"id":123},"compress-without-losing-key-details","Compress without losing key details",[15,126,127],{},"Compression is not about making the file as tiny as possible. The goal is to keep the page fast while preserving product texture, labels, color, and edges.",[15,129,130,131,133],{},"Use the ",[22,132,30],{"href":29},", then preview the product page on desktop and mobile before publishing.",[38,135,137],{"id":136},"use-descriptive-file-names","Use descriptive file names",[15,139,140,141,145,146,36],{},"File names help maintenance and image SEO. A name like ",[142,143,144],"code",{},"blue-running-shoes-side-view.jpg"," is much better than ",[142,147,148],{},"IMG_1234.jpg",[38,150,152],{"id":151},"pre-publish-checklist","Pre-publish checklist",[15,154,155],{},"Before uploading, check:",[49,157,158,161,164,167,170,173],{},[52,159,160],{},"does the image match the target placement size?",[52,162,163],{},"is the file size reasonable?",[52,165,166],{},"is transparency preserved if needed?",[52,168,169],{},"is the product centered and easy to recognize?",[52,171,172],{},"is the file name readable?",[52,174,175],{},"does it look sharp on mobile?",[38,177,179],{"id":178},"final-thoughts","Final thoughts",[15,181,182],{},"Preparing e-commerce product images is more than compression. A reliable workflow is: choose the purpose, resize, select the format, compress, name the file, and preview the result. This keeps product pages faster, clearer, and easier to maintain.",{"title":184,"searchDepth":185,"depth":185,"links":186},"",2,[187,188,189,190,191,192,193],{"id":40,"depth":185,"text":41},{"id":75,"depth":185,"text":76},{"id":99,"depth":185,"text":100},{"id":123,"depth":185,"text":124},{"id":136,"depth":185,"text":137},{"id":151,"depth":185,"text":152},{"id":178,"depth":185,"text":179},"画像最適化","2026-05-05T00:00:00.000Z","オンラインストアへアップロードする前に、商品画像のサイズ変更、圧縮、形式変換、命名を確認する実用チェックリスト。","md",false,"/blog/how-to-prepare-product-images-for-ecommerce.png",{},true,"/blog/ja-jp/how-to-prepare-product-images-for-ecommerce",6,{"title":5,"description":196},"blog/ja-JP/how-to-prepare-product-images-for-ecommerce",[207,208,209],"Product Images","E-commerce","Image Optimization",[24,29,34],"bVCWWe5v4FB7b8zLSv42bKZAW85EU75elpmMeLegZik",[213,746],{"id":214,"title":215,"author":216,"body":217,"category":194,"date":732,"description":733,"extension":197,"featured":198,"image":734,"meta":735,"navigation":201,"path":736,"readingTime":203,"seo":737,"stem":738,"tags":739,"tools":743,"__hash__":745},"content/blog/ja-JP/avif-vs-webp-comparison.md","AVIF vs WebP: 2026年、最適な画像フォーマットはどれ？","Anything Tools チーム",{"type":8,"value":218,"toc":713},[219,222,234,241,245,354,358,363,368,388,392,398,402,422,425,429,432,445,449,452,456,470,483,620,623,626,629,632,652,655,666,670,675,683,688,699,709],[11,220,215],{"id":221},"avif-vs-webp-2026年最適な画像フォーマットはどれ",[15,223,224,225,229,230,233],{},"より高速なウェブサイトとより良いユーザー体験を追求する中で、画像の最適化は重要な役割を果たします。長年にわたり、",[226,227,228],"strong",{},"WebP"," はJPEGやPNGへの対抗馬でした。しかし今、新たな競争相手が登場しました：",[226,231,232],{},"AVIF","です。",[15,235,236,237,240],{},"このガイドでは、",[226,238,239],{},"AVIF vs WebP"," を比較し、2026年のプロジェクトに最適な次世代フォーマットはどちらかを判断する手助けをします。",[38,242,244],{"id":243},"概要結論","概要：結論",[246,247,248,265],"table",{},[249,250,251],"thead",{},[252,253,254,258,260,262],"tr",{},[255,256,257],"th",{},"機能",[255,259,228],{},[255,261,232],{},[255,263,264],{},"勝者",[266,267,268,287,304,321,338],"tbody",{},[252,269,270,276,279,282],{},[271,272,273],"td",{},[226,274,275],{},"圧縮",[271,277,278],{},"良好 (JPEGより25-35%小さい)",[271,280,281],{},"優秀 (JPEGより50%以上小さい)",[271,283,284,285],{},"🏆 ",[226,286,232],{},[252,288,289,294,297,300],{},[271,290,291],{},[226,292,293],{},"画質",[271,295,296],{},"中/高ビットレートで良好",[271,298,299],{},"低ビットレートで優れている",[271,301,284,302],{},[226,303,232],{},[252,305,306,311,314,317],{},[271,307,308],{},[226,309,310],{},"ブラウザ対応",[271,312,313],{},"ほぼ全て (97%以上)",[271,315,316],{},"優秀 (93%以上)",[271,318,284,319],{},[226,320,228],{},[252,322,323,328,331,334],{},[271,324,325],{},[226,326,327],{},"エンコード速度",[271,329,330],{},"早い",[271,332,333],{},"遅め",[271,335,284,336],{},[226,337,228],{},[252,339,340,344,347,350],{},[271,341,342],{},[226,343,257],{},[271,345,346],{},"透明度, アニメーション",[271,348,349],{},"透明度, アニメーション, HDR, 広色域",[271,351,284,352],{},[226,353,232],{},[38,355,357],{"id":356},"webpとは","WebPとは？",[15,359,360,362],{},[226,361,228],{}," は、2010年にGoogleによって開発された画像フォーマットです。予測符号化を使用して、JPEGやPNGよりも効率的に画像を圧縮します。",[364,365,367],"h3",{"id":366},"webpの主な利点","WebPの主な利点：",[49,369,370,376,382],{},[52,371,372,375],{},[226,373,374],{},"広範なサポート:"," すべての主要ブラウザ（Chrome、Firefox、Safari、Edge）でサポートされています。",[52,377,378,381],{},[226,379,380],{},"多用途:"," 不可逆圧縮と可逆圧縮の両方、および透明度（アルファチャンネル）とアニメーションをサポートしています。",[52,383,384,387],{},[226,385,386],{},"パフォーマンス:"," 通常、同等のJPEG画像よりも25-35%小さくなります。",[38,389,391],{"id":390},"avifとは","AVIFとは？",[15,393,394,397],{},[226,395,396],{},"AVIF (AV1 Image File Format)"," は、AV1ビデオコーデックのキーフレームから派生した新しいフォーマットです。2019年にAlliance for Open Media (AOMedia) によってリリースされました。",[364,399,401],{"id":400},"avifの主な利点","AVIFの主な利点：",[49,403,404,410,416],{},[52,405,406,409],{},[226,407,408],{},"卓越した圧縮:"," 同じ画質でJPEGより50%、WebPより20-30%小さくできます。",[52,411,412,415],{},[226,413,414],{},"高画質:"," WebP（ブロック状に見えることがある）と比較して、非常に小さなファイルサイズでも構造的な詳細をより維持します。",[52,417,418,421],{},[226,419,420],{},"高度な機能:"," HDR（ハイダイナミックレンジ）と広色域（WCG）をネイティブサポートしています。",[38,423,424],{"id":424},"詳細比較",[364,426,428],{"id":427},"_1-ファイルサイズと圧縮","1. ファイルサイズと圧縮",[15,430,431],{},"ここではAVIFが明確な勝者です。その圧縮アルゴリズムはより高度で、より少ないバイト数により多くのデータを詰め込むことができます。私たちのテストでは：",[49,433,434,440],{},[52,435,436,437,439],{},"100KB JPEG を ",[226,438,228],{}," に変換: ~70KB",[52,441,436,442,444],{},[226,443,232],{}," に変換: ~50KB",[364,446,448],{"id":447},"_2-視覚的な品質","2. 視覚的な品質",[15,450,451],{},"ファイルサイズが小さい場合、WebPは「ブロックノイズ」やぼやけが発生しがちです。一方、AVIFは細かいテクスチャや粒子が失われる可能性がありますが、一般的にエッジや形状をはるかによく保持し、積極的な圧縮レベルでも人間の目にはより心地よい画像を生成します。",[364,453,455],{"id":454},"_3-ブラウザ対応-2026","3. ブラウザ対応 (2026)",[49,457,458,464],{},[52,459,460,463],{},[226,461,462],{},"WebP:"," 基本的にすべての環境でサポートされています。主要なフォーマットとして安全に使用できます。",[52,465,466,469],{},[226,467,468],{},"AVIF:"," Chrome、Firefox、Safari (iOS 16+, macOS Ventura+)、Edgeでサポートされています。グローバルなサポート率は93%を超えています。",[471,472,473],"blockquote",{},[15,474,475,478,479,482],{},[226,476,477],{},"推奨:"," ",[142,480,481],{},"\u003Cpicture>","タグを使用して、最新のブラウザにはAVIFを提供し、古いブラウザにはWebPまたはJPEGにフォールバックします。",[484,485,489],"pre",{"className":486,"code":487,"language":488,"meta":184,"style":184},"language-html shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u003Cpicture>\n  \u003Csource srcset=\"image.avif\" type=\"image/avif\">\n  \u003Csource srcset=\"image.webp\" type=\"image/webp\">\n  \u003Cimg src=\"image.jpg\" alt=\"説明\">\n\u003C/picture>\n","html",[142,490,491,507,545,576,610],{"__ignoreMap":184},[492,493,496,500,504],"span",{"class":494,"line":495},"line",1,[492,497,499],{"class":498},"sMK4o","\u003C",[492,501,503],{"class":502},"swJcz","picture",[492,505,506],{"class":498},">\n",[492,508,509,512,515,519,522,525,529,531,534,536,538,541,543],{"class":494,"line":185},[492,510,511],{"class":498},"  \u003C",[492,513,514],{"class":502},"source",[492,516,518],{"class":517},"spNyl"," srcset",[492,520,521],{"class":498},"=",[492,523,524],{"class":498},"\"",[492,526,528],{"class":527},"sfazB","image.avif",[492,530,524],{"class":498},[492,532,533],{"class":517}," type",[492,535,521],{"class":498},[492,537,524],{"class":498},[492,539,540],{"class":527},"image/avif",[492,542,524],{"class":498},[492,544,506],{"class":498},[492,546,548,550,552,554,556,558,561,563,565,567,569,572,574],{"class":494,"line":547},3,[492,549,511],{"class":498},[492,551,514],{"class":502},[492,553,518],{"class":517},[492,555,521],{"class":498},[492,557,524],{"class":498},[492,559,560],{"class":527},"image.webp",[492,562,524],{"class":498},[492,564,533],{"class":517},[492,566,521],{"class":498},[492,568,524],{"class":498},[492,570,571],{"class":527},"image/webp",[492,573,524],{"class":498},[492,575,506],{"class":498},[492,577,579,581,584,587,589,591,594,596,599,601,603,606,608],{"class":494,"line":578},4,[492,580,511],{"class":498},[492,582,583],{"class":502},"img",[492,585,586],{"class":517}," src",[492,588,521],{"class":498},[492,590,524],{"class":498},[492,592,593],{"class":527},"image.jpg",[492,595,524],{"class":498},[492,597,598],{"class":517}," alt",[492,600,521],{"class":498},[492,602,524],{"class":498},[492,604,605],{"class":527},"説明",[492,607,524],{"class":498},[492,609,506],{"class":498},[492,611,613,616,618],{"class":494,"line":612},5,[492,614,615],{"class":498},"\u003C/",[492,617,503],{"class":502},[492,619,506],{"class":498},[38,621,622],{"id":622},"画像の変換方法",[15,624,625],{},"次世代画像を作成するために高価なソフトウェアは必要ありません。",[364,627,628],{"id":628},"オンラインツール",[15,630,631],{},"私たちの無料ツールを使用して画像を変換できます：",[49,633,634,640,646],{},[52,635,636],{},[22,637,639],{"href":638},"/image/converter/jpg-to-webp","JPGをWebPに変換",[52,641,642],{},[22,643,645],{"href":644},"/image/converter/png-to-avif","PNGをAVIFに変換",[52,647,648],{},[22,649,651],{"href":650},"/image/converter/heic-to-jpg","HEICをJPGに変換",[364,653,654],{"id":654},"コマンドライン",[15,656,657,658,661,662,665],{},"開発者にとって、",[142,659,660],{},"ffmpeg"," (AVIF用) や ",[142,663,664],{},"cwebp"," (WebP用) のようなツールは、バッチ処理のための強力な選択肢です。",[38,667,669],{"id":668},"結論どちらを使うべき","結論：どちらを使うべき？",[15,671,672],{},[226,673,674],{},"以下の場合にWebPを使用してください：",[49,676,677,680],{},[52,678,679],{},"フォールバック戦略なしで最大の互換性が必要な場合。",[52,681,682],{},"高速なエンコード速度が必要な場合（例：その場で画像を生成する）。",[15,684,685],{},[226,686,687],{},"以下の場合にAVIFを使用してください：",[49,689,690,693,696],{},[52,691,692],{},"最速のページ読み込みのために、ファイルサイズを最小限に抑えたい場合。",[52,694,695],{},"HDRサポートやより高いビット深度の色が必要な場合。",[52,697,698],{},"フォールバックタグの使用に抵抗がない場合。",[15,700,701,704,705,708],{},[226,702,703],{},"最終判定:"," 2026年現在、",[226,706,707],{},"パフォーマンスにはAVIFが最適","ですが、WebPは依然として堅実で普遍的にサポートされている主力フォーマットです。最良の戦略は、多くの場合、両方を使用することです。",[710,711,712],"style",{},"html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":184,"searchDepth":185,"depth":185,"links":714},[715,716,719,722,727,731],{"id":243,"depth":185,"text":244},{"id":356,"depth":185,"text":357,"children":717},[718],{"id":366,"depth":547,"text":367},{"id":390,"depth":185,"text":391,"children":720},[721],{"id":400,"depth":547,"text":401},{"id":424,"depth":185,"text":424,"children":723},[724,725,726],{"id":427,"depth":547,"text":428},{"id":447,"depth":547,"text":448},{"id":454,"depth":547,"text":455},{"id":622,"depth":185,"text":622,"children":728},[729,730],{"id":628,"depth":547,"text":628},{"id":654,"depth":547,"text":654},{"id":668,"depth":185,"text":669},"2026-01-20T00:00:00.000Z","AVIFとWebP画像フォーマットの包括的な比較。圧縮率、画質、ブラウザ対応状況、そしてあなたのウェブサイトにどちらを使用すべきかを解説します。","/blog/avif-vs-webp.jpg",{},"/blog/ja-jp/avif-vs-webp-comparison",{"title":215,"description":733},"blog/ja-JP/avif-vs-webp-comparison",[232,228,740,741,742],"画像圧縮","Webパフォーマンス","SEO",[744],"/image/converter/webp-to-avif","VKl8mlHRAWoibjHFRpfqfu4IYVMz1lX226jm7PqRMRg",{"id":747,"title":748,"author":6,"body":749,"category":194,"date":818,"description":819,"extension":197,"featured":198,"image":820,"meta":821,"navigation":201,"path":822,"readingTime":823,"seo":824,"stem":825,"tags":826,"tools":829,"__hash__":830},"content/blog/ja-JP/how-to-compress-images-for-faster-page-speed.md","画像を圧縮してページ表示を高速化する方法",{"type":8,"value":750,"toc":811},[751,753,756,760,763,767,772,776,783,787,804,808],[11,752,748],{"id":748},[15,754,755],{},"重い画像は、今でもページ表示を遅くする最大要因のひとつです。特にモバイル体験と Core Web Vitals に効いてきます。",[38,757,759],{"id":758},"why-compression-matters","Why compression matters",[15,761,762],{},"Large images increase download weight, slow perceived load time, and make Core Web Vitals harder to improve.",[38,764,766],{"id":765},"pick-the-right-format-first","Pick the right format first",[15,768,769,770,36],{},"Use JPG for photos, PNG for graphics with transparency, and WebP when you want a modern web delivery format. You can compare options with the ",[22,771,35],{"href":34},[38,773,775],{"id":774},"resize-before-compressing","Resize before compressing",[15,777,778,779,782],{},"Do not compress a 4000px image if the layout only needs 1200px. Start with the ",[22,780,781],{"href":24},"Image Resizer",", then compress the smaller file.",[38,784,786],{"id":785},"delivery-workflow","Delivery workflow",[788,789,790,793,796,801],"ol",{},[52,791,792],{},"Export the original asset.",[52,794,795],{},"Resize to the real display range.",[52,797,798,799,36],{},"Compress with ",[22,800,30],{"href":29},[52,802,803],{},"Recheck the page and compare before/after in the browser.",[38,805,807],{"id":806},"final-takeaway","Final takeaway",[15,809,810],{},"For better page speed, think in this order: dimensions first, format second, compression third.",{"title":184,"searchDepth":185,"depth":185,"links":812},[813,814,815,816,817],{"id":758,"depth":185,"text":759},{"id":765,"depth":185,"text":766},{"id":774,"depth":185,"text":775},{"id":785,"depth":185,"text":786},{"id":806,"depth":185,"text":807},"2026-03-24T00:00:00.000Z","適切な形式の選択、先にリサイズしてから圧縮する流れ、そして画質と Core Web Vitals のバランスを実践的に解説します。","/blog/how-to-compress-images-for-faster-page-speed.png",{},"/blog/ja-jp/how-to-compress-images-for-faster-page-speed",7,{"title":748,"description":819},"blog/ja-JP/how-to-compress-images-for-faster-page-speed",[740,827,828,741,742],"ページ速度","Core Web Vitals",[29],"KgaEJP5Pv_YBcX6U7udC-k98i4IbI5_jwBuYMUgdUe0",1781687205749]