[{"data":1,"prerenderedAt":192},["ShallowReactive",2],{"blog-post-/blog/ja-jp/how-to-remove-exif-c2pa-and-ai-metadata-from-images":3,"related-posts-/blog/ja-jp/how-to-remove-exif-c2pa-and-ai-metadata-from-images":191},{"id":4,"title":5,"author":6,"body":7,"category":171,"date":172,"description":173,"extension":174,"featured":175,"image":176,"meta":177,"navigation":178,"path":179,"readingTime":180,"seo":181,"stem":182,"tags":183,"tools":189,"__hash__":190},"content/blog/ja-JP/how-to-remove-exif-c2pa-and-ai-metadata-from-images.md","画質を落とさずに画像のEXIF・GPS・C2PA署名・AIプロンプトを削除する方法",null,{"type":8,"value":9,"toc":165},"minimark",[10,29,37,40,45,111,113,117,122,147],[11,12,13,14,18,19,18,22,18,25,28],"p",{},"スマートフォンで撮影した写真の共有や、",[15,16,17],"strong",{},"Stable Diffusion","、",[15,20,21],{},"ComfyUI",[15,23,24],{},"Midjourney",[15,26,27],{},"Adobe Firefly"," で生成したAIイラストの納品時には、目に見えないメタデータの確認が欠かせません。",[11,30,31,36],{},[32,33,35],"a",{"href":34},"/image/metadata-remover","画像メタデータ＆C2PA削除ツール"," を使えば、ファイルを外部サーバーにアップロードすることなく、ブラウザ内で安全かつ無劣化（ロスレス）でメタデータを一括消去できます。",[38,39],"hr",{},[41,42,44],"h2",{"id":43},"_1-画像に潜む4つのメタデータ領域","1. 画像に潜む4つのメタデータ領域",[46,47,48,66,78,105],"ol",{},[49,50,51,65],"li",{},[15,52,53,54,18,58,18,61,64],{},"EXIF＆GPS位置情報（",[55,56,57],"code",{},"JPEG APP1",[55,59,60],{},"PNG eXIf",[55,62,63],{},"WebP EXIF","）","：撮影場所の緯度・経度、日時、カメラ機種名など。",[49,67,68,77],{},[15,69,70,71,18,74,64],{},"C2PA / JUMBFコンテンツ認証（",[55,72,73],{},"JPEG APP11",[55,75,76],{},"PNG caBX/c2pa","：OpenAI DALL-E 3、Adobe Firefly、Google Imagenなどが埋め込む電子署名マニフェスト。",[49,79,80,92,93,96,97,100,101,104],{},[15,81,82,83,18,86,18,89,64],{},"AI生成プロンプト＆ノードグラフ（",[55,84,85],{},"PNG tEXt",[55,87,88],{},"iTXt",[55,90,91],{},"zTXt","：Automatic1111の ",[55,94,95],{},"parameters"," やComfyUIの ",[55,98,99],{},"prompt"," / ",[55,102,103],{},"workflow"," JSON。",[49,106,107,110],{},[15,108,109],{},"XMP＆IPTC編集履歴","：画像編集ソフトの履歴情報。",[38,112],{},[41,114,116],{"id":115},"_2-ロスレスバイナリ削除とcanvas再エンコードの違い","2. ロスレス・バイナリ削除とCanvas再エンコードの違い",[11,118,119,121],{},[32,120,35],{"href":34}," では2つのモードを選択できます。",[123,124,125,141],"ul",{},[49,126,127,130,131,100,134,100,137,140],{},[15,128,129],{},"ロスレス・バイナリ削除（推奨）","：画像の圧縮ピクセルデータ（",[55,132,133],{},"IDAT",[55,135,136],{},"SOS",[55,138,139],{},"VP8","）には一切触れず、メタデータチャンクのみを切り離します。画質劣化はゼロで、ICCカラープロファイルの保持も選択可能です。",[49,142,143,146],{},[15,144,145],{},"ピクセル再エンコード（Canvas）","：HTML5 Canvas上にピクセルを再描画し、新しい画像コンテナを生成します。",[11,148,149,150,154,155,159,160,164],{},"削除後は ",[32,151,153],{"href":152},"/image/ai-detector","AI画像＆C2PA検出ツール"," でメタデータが完全に消えていることを確認でき、",[32,156,158],{"href":157},"/image/gemini-watermark-remover","Gemini透かし消去ツール"," や ",[32,161,163],{"href":162},"/image/compressor","画像圧縮ツール"," と組み合わせて公開作業を効率化できます。",{"title":166,"searchDepth":167,"depth":167,"links":168},"",2,[169,170],{"id":43,"depth":167,"text":44},{"id":115,"depth":167,"text":116},"Image Privacy","2026-10-27T00:00:00.000Z","PNG、JPG、WebP画像に含まれるEXIFカメラ情報、GPS座標、C2PAコンテンツ認証、Stable DiffusionやComfyUIのワークフローをブラウザ内で無劣化削除する手順を解説します。","md",false,"/blog/how-to-remove-exif-c2pa-and-ai-metadata-from-images.png",{},true,"/blog/ja-jp/how-to-remove-exif-c2pa-and-ai-metadata-from-images",6,{"title":5,"description":173},"blog/ja-JP/how-to-remove-exif-c2pa-and-ai-metadata-from-images",[184,185,186,187,188],"exif-remover","c2pa","stable-diffusion","comfyui","image-privacy",[34,152,157,162],"XZuBDGHpbVM5QO1gn1eXxN3phwBDRiscfMyYZWwJyGo",[],1793175861779]