[{"data":1,"prerenderedAt":129},["ShallowReactive",2],{"faq-doc-workflow-what-dpi-for-print":3},{"id":4,"title":5,"answer":6,"body":7,"canonical":103,"category":104,"description":105,"draft":106,"extension":107,"faqRefs":108,"h1":112,"meta":113,"navigation":114,"path":115,"published":114,"question":5,"relatedTools":116,"robots":121,"seo":122,"slug":124,"stem":125,"summary":126,"updatedAt":127,"__hash__":128},"faqs\u002Ffaqs\u002Fwhat-dpi-for-print.md","打印照片一般用多少 DPI？","常见照片打印通常按 300 DPI 准备；如果相馆、打印店或上传系统有明确要求，以对方要求为准。不要只改 DPI 数字，还要同时检查实际像素和打印尺寸。",{"type":8,"value":9,"toc":93},"minimark",[10,14,18,21,24,46,49,67,70,87,90],[11,12,13],"h2",{"id":13},"使用场景",[15,16,17],"p",{},"打印照片、证件照、A4 排版图、海报或资料页时，经常会看到 DPI 要求。DPI 表示每英寸打印多少个点，但它必须和实际像素、打印尺寸一起看，单独改 DPI 数字不能让低清图片真正变清楚。",[15,19,20],{},"如果只是手机或网页查看，DPI 通常不是重点；如果要交给相馆、打印店、报名系统或印刷场景，就要按对方要求检查。",[11,22,23],{"id":23},"推荐判断顺序",[25,26,27,31,34,37,40,43],"ol",{},[28,29,30],"li",{},"先确认最终用途：证件照、A4 打印、照片冲印、海报还是大幅喷绘。",[28,32,33],{},"常规照片和近距离阅读材料，可以先按 300 DPI 准备。",[28,35,36],{},"再确认目标打印尺寸，例如一寸、二寸、A4、六寸或海报尺寸。",[28,38,39],{},"按打印尺寸反推图片像素是否够用，不要只看文件体积。",[28,41,42],{},"打印前看 100% 预览，重点检查人脸、文字、边缘和二维码。",[28,44,45],{},"如果打印店或系统写了明确 DPI、像素或尺寸要求，以入口说明为准。",[11,47,48],{"id":48},"重点看哪里",[50,51,52,55,58,61,64],"ul",{},[28,53,54],{},"DPI 数字只是打印密度，实际清晰度还取决于图片像素。",[28,56,57],{},"文件大不一定清楚，文件小也不一定不能打印，关键看像素和打印尺寸。",[28,59,60],{},"小照片、证件照和资料图通常更看重边缘和五官是否清楚。",[28,62,63],{},"大幅喷绘如果观看距离较远，不一定需要按近距离照片标准处理。",[28,65,66],{},"打印前一定看系统预览，避免被自动缩放、拉伸或裁边。",[11,68,69],{"id":69},"常见错误与修正",[50,71,72,75,78,81,84],{},[28,73,74],{},"只把 DPI 改成 300，不看像素。修正：同时检查宽高像素和打印尺寸。",[28,76,77],{},"以为文件越大越清楚。修正：看 100% 预览里的文字、人脸和边缘。",[28,79,80],{},"先把小图拉大再打印。修正：优先找更高清原图，必要时再做画质增强。",[28,82,83],{},"忽略打印店要求。修正：按对方给出的 DPI、尺寸和格式导出。",[28,85,86],{},"打印面板开启自动适应。修正：打印前检查缩放比例和边距。",[11,88,89],{"id":89},"进阶建议",[15,91,92],{},"重要照片建议先打印一张小样。确认尺寸、清晰度、颜色和边距都没问题，再正式打印多份，比一次性全部输出后返工更稳。",{"title":94,"searchDepth":95,"depth":95,"links":96},"",3,[97,99,100,101,102],{"id":13,"depth":98,"text":13},2,{"id":23,"depth":98,"text":23},{"id":48,"depth":98,"text":48},{"id":69,"depth":98,"text":69},{"id":89,"depth":98,"text":89},null,"workflow","说明打印照片常见 DPI 要求，以及 DPI、打印尺寸、像素、清晰度和文件大小之间的关系。",false,"md",[109,110,111],"jpg-png-image-print","image-print-system-dialog","a4-photo-sheet-print-check","打印照片一般用多少 DPI",{},true,"\u002Ffaqs\u002Fwhat-dpi-for-print",[117,118,119,120],"change-dpi","modify-resolution","change-size","photo-sheet","index,follow",{"title":5,"description":123,"robots":121},"打印照片 DPI 怎么选：300 DPI、打印尺寸、像素大小、文件体积和打印预览之间的关系说明。","what-dpi-for-print","faqs\u002Fwhat-dpi-for-print","300 DPI 是常见参考，但能不能打印清楚，还要看实际像素、打印尺寸和预览效果。","2026-06-18","GZ1Z89cmkLC786cdA_n1t8UuRiJgxD2QcWmP363a7Gw",1781797969368]