[{"data":1,"prerenderedAt":154},["ShallowReactive",2],{"topic-doc-image-compress-30k-guide":3},{"id":4,"title":5,"body":6,"canonical":130,"description":131,"draft":132,"extension":133,"faqRefs":134,"h1":5,"meta":139,"navigation":140,"path":141,"published":140,"relatedTools":142,"robots":147,"seo":148,"slug":149,"stem":150,"summary":151,"theme":143,"updatedAt":152,"__hash__":153},"topics\u002Ftopics\u002Fimage-compress-30k-guide.md","图片压缩到30K以内怎么做",{"type":7,"value":8,"toc":121},"minimark",[9,13,17,21,81,84,103,106],[10,11,12],"h2",{"id":12},"直接答案",[14,15,16],"p",{},"要压到 30K 以内，先不要直接把质量拉到很低。更稳的做法是先减少无效像素，再压缩体积，最后检查成品是否还能看清关键内容。",[10,18,20],{"id":19},"_30k-以内怎么分步处理","30K 以内怎么分步处理",[22,23,24,37],"table",{},[25,26,27],"thead",{},[28,29,30,34],"tr",{},[31,32,33],"th",{},"原图情况",[31,35,36],{},"建议",[38,39,40,49,57,65,73],"tbody",{},[28,41,42,46],{},[43,44,45],"td",{},"手机原图几 MB",[43,47,48],{},"先改像素，再压缩",[28,50,51,54],{},[43,52,53],{},"四周空白很多",[43,55,56],{},"先裁剪，再压缩",[28,58,59,62],{},[43,60,61],{},"PNG 体积偏大",[43,63,64],{},"先看是否能转 JPG",[28,66,67,70],{},[43,68,69],{},"证件照或报名照",[43,71,72],{},"先保证人脸清楚",[28,74,75,78],{},[43,76,77],{},"商品图",[43,79,80],{},"先保证主体边缘清楚",[10,82,83],{"id":83},"推荐处理顺序",[85,86,87,91,94,97,100],"ol",{},[88,89,90],"li",{},"查看当前文件大小和像素",[88,92,93],{},"改像素或裁剪掉无关区域",[88,95,96],{},"再压缩到 30K 以内",[88,98,99],{},"格式不支持时转换",[88,101,102],{},"上传前检查清晰度和文件参数",[10,104,105],{"id":105},"不建议的做法",[107,108,109,112,115,118],"ul",{},[88,110,111],{},"多次重复压缩同一张图",[88,113,114],{},"先压缩再裁剪",[88,116,117],{},"为了达标让人脸或文字不可辨认",[88,119,120],{},"只改文件后缀，不处理真实格式",{"title":122,"searchDepth":123,"depth":123,"links":124},"",3,[125,127,128,129],{"id":12,"depth":126,"text":12},2,{"id":19,"depth":126,"text":20},{"id":83,"depth":126,"text":83},{"id":105,"depth":126,"text":105},null,"说明图片需要压缩到 30K 以内时，如何先改像素、裁剪无关区域，再压缩并检查清晰度。",false,"md",[135,136,137,138],"compress-photo-under-30k","compress-to-20k-50k","compress-blurry-after-small-size","choose-between-jpg-png-webp",{},true,"\u002Ftopics\u002Fimage-compress-30k-guide",[143,144,145,146],"compression","modify-pixel","image-crop","format-convert","index,follow",{"title":5,"description":131,"robots":147},"image-compress-30k-guide","topics\u002Fimage-compress-30k-guide","30K 以内先缩小无效像素，再压缩体积，最后检查清晰度。","2026-04-23","_zwmnRkURX9LoLBuWgydH-baeuLFRXAV9wLTdzi7YcQ",1779810693221]