[{"data":1,"prerenderedAt":365},["ShallowReactive",2],{"blog-img-resize-complete-guide":3},{"id":4,"title":5,"author":6,"body":7,"category":346,"description":347,"extension":348,"image":349,"keywords":350,"meta":357,"navigation":358,"path":359,"publishedAt":360,"readingTime":361,"seo":362,"stem":363,"updatedAt":360,"__hash__":364},"blog\u002Fblog\u002Fimg-resize-complete-guide.md","免费在线图片尺寸修改工具：调整图片大小完全指南","91AI工具",{"type":8,"value":9,"toc":326},"minimark",[10,14,18,21,25,66,69,89,92,95,181,184,238,241,243,246,252,263,265,268,270,273,279,282,293,296,302,308,314,320],[11,12,13],"p",{},"图片尺寸调整是日常最常用的图像处理需求之一。无论是制作证件照、优化网页图片加载速度，还是统一社交媒体封面尺寸，都需要修改图片的尺寸和比例。",[15,16,17],"h2",{"id":17},"在线图片尺寸修改工具",[11,19,20],{},"91AI工具网的免费在线图片尺寸修改工具，支持多种裁剪和调整方式，纯前端处理，无需上传服务器。",[22,23,24],"h3",{"id":24},"核心功能",[26,27,28,36,42,48,54,60],"ul",{},[29,30,31,35],"li",{},[32,33,34],"strong",{},"自由裁剪","：交互式拖拽选择裁剪区域，所见即所得",[29,37,38,41],{},[32,39,40],{},"预设尺寸","：一键选择一寸照、二寸照等常用尺寸",[29,43,44,47],{},[32,45,46],{},"自定义尺寸","：精确输入宽高像素值",[29,49,50,53],{},[32,51,52],{},"批量处理","：同时处理多张图片，提高效率",[29,55,56,59],{},[32,57,58],{},"纯前端处理","：图片在浏览器本地处理，上传服务器",[29,61,62,65],{},[32,63,64],{},"即时预览","：调整效果实时显示，不满意可随时重试",[22,67,68],{"id":68},"如何使用",[70,71,72,80,83,86],"ol",{},[29,73,74,75],{},"打开",[76,77,79],"a",{"href":78},"\u002Ftools\u002Fimg-resize","图片尺寸修改工具",[29,81,82],{},"上传JPG、PNG、WebP、BMP或GIF格式的图片",[29,84,85],{},"选择裁剪模式（自由裁剪、预设尺寸或自定义尺寸）",[29,87,88],{},"预览调整效果，确认后下载处理后的图片",[15,90,91],{"id":91},"常见尺寸对照表",[22,93,94],{"id":94},"证件照尺寸",[96,97,98,114],"table",{},[99,100,101],"thead",{},[102,103,104,108,111],"tr",{},[105,106,107],"th",{},"证件类型",[105,109,110],{},"尺寸（像素）",[105,112,113],{},"比例",[115,116,117,129,140,150,160,171],"tbody",{},[102,118,119,123,126],{},[120,121,122],"td",{},"一寸照",[120,124,125],{},"295×413",[120,127,128],{},"3:4",[102,130,131,134,137],{},[120,132,133],{},"小一寸",[120,135,136],{},"260×378",[120,138,139],{},"约2:3",[102,141,142,145,148],{},[120,143,144],{},"大一寸",[120,146,147],{},"390×567",[120,149,139],{},[102,151,152,155,158],{},[120,153,154],{},"二寸照",[120,156,157],{},"413×579",[120,159,128],{},[102,161,162,165,168],{},[120,163,164],{},"小二寸",[120,166,167],{},"413×531",[120,169,170],{},"约3:4",[102,172,173,176,179],{},[120,174,175],{},"大二寸",[120,177,178],{},"413×626",[120,180,139],{},[22,182,183],{"id":183},"社交媒体尺寸",[96,185,186,196],{},[99,187,188],{},[102,189,190,193],{},[105,191,192],{},"平台",[105,194,195],{},"推荐尺寸（像素）",[115,197,198,206,214,222,230],{},[102,199,200,203],{},[120,201,202],{},"微信头像",[120,204,205],{},"360×360",[102,207,208,211],{},[120,209,210],{},"公众号封面",[120,212,213],{},"900×500",[102,215,216,219],{},[120,217,218],{},"微博封面",[120,220,221],{},"980×300",[102,223,224,227],{},[120,225,226],{},"小红书笔记",[120,228,229],{},"1080×1440",[102,231,232,235],{},[120,233,234],{},"抖音视频",[120,236,237],{},"1080×1920",[15,239,240],{"id":240},"尺寸调整方式详解",[22,242,34],{"id":34},[11,244,245],{},"交互式拖拽选择裁剪区域，保留需要的画面部分。适合去除照片中的多余背景或调整构图。",[11,247,248,251],{},[32,249,250],{},"操作提示","：",[26,253,254,257,260],{},[29,255,256],{},"拖拽裁剪框角标可调整裁剪区域大小",[29,258,259],{},"拖拽裁剪框内部可移动区域位置",[29,261,262],{},"裁剪框外区域将被移除",[22,264,40],{"id":40},[11,266,267],{},"一键选择预设的常用尺寸，包括证件照、社交媒体封面、网页元素等。系统自动计算最佳裁剪比例。",[22,269,46],{"id":46},[11,271,272],{},"精确输入目标宽度和高度（像素），适合需要严格按照指定尺寸输出的场景。",[11,274,275,278],{},[32,276,277],{},"宽高比保持","：开启锁定比例后，修改宽度自动调整高度，保持画面不变形。",[15,280,281],{"id":281},"注意事项",[26,283,284,287,290],{},[29,285,286],{},"放大图片会导致画质下降，建议只缩小不放大",[29,288,289],{},"WebP和GIF格式支持透明背景，裁剪后保留透明度",[29,291,292],{},"批量处理时所有图片使用相同的裁剪参数",[15,294,295],{"id":295},"常见问题",[11,297,298,301],{},[32,299,300],{},"Q：修改尺寸后图片会变模糊吗？","\nA：缩小图片通常不会明显降低清晰度。但放大图片（将小图放大）会导致像素化和画质下降。",[11,303,304,307],{},[32,305,306],{},"Q：支持哪些图片格式？","\nA：支持JPG、JPEG、PNG、WebP、BMP、GIF格式。",[11,309,310,313],{},[32,311,312],{},"Q：图片上传到服务器吗？","\nA：不会。所有处理在浏览器本地完成，图片文件不上传服务器，保护隐私安全。",[11,315,316,319],{},[32,317,318],{},"Q：可以批量处理多张图片吗？","\nA：支持同时上传多张图片，使用相同的裁剪参数批量处理，显著提高工作效率。",[11,321,322,325],{},[32,323,324],{},"Q：如何保持图片比例不变？","\nA：在自定义尺寸模式下，锁定宽高比例开关，修改宽度或高度时另一方将自动按比例调整。",{"title":327,"searchDepth":328,"depth":328,"links":329},"",2,[330,335,339,344,345],{"id":17,"depth":328,"text":17,"children":331},[332,334],{"id":24,"depth":333,"text":24},3,{"id":68,"depth":333,"text":68},{"id":91,"depth":328,"text":91,"children":336},[337,338],{"id":94,"depth":333,"text":94},{"id":183,"depth":333,"text":183},{"id":240,"depth":328,"text":240,"children":340},[341,342,343],{"id":34,"depth":333,"text":34},{"id":40,"depth":333,"text":40},{"id":46,"depth":333,"text":46},{"id":281,"depth":328,"text":281},{"id":295,"depth":328,"text":295},"image","免费在线图片尺寸修改工具，支持交互式自由裁剪和预设尺寸（一寸照二寸照等），可自定义任意宽高。纯前端处理不上传服务器保护隐私，即时预览调整效果，支持批量处理多张图片，不限文件大小完全免费使用。","md","\u002Fog-image.png",[351,352,353,354,355,356],"图片尺寸修改","图片裁剪","在线调整图片大小","图片缩放","一寸照制作","图片批量处理",{},true,"\u002Fblog\u002Fimg-resize-complete-guide","2026-07-10",5,{"title":5,"description":347},"blog\u002Fimg-resize-complete-guide","M6yZ6XSEDIs524nahNzuvIAQb1zmc_1FR1enbmf6Ylw",1783648213608]