[{"data":1,"prerenderedAt":236},["ShallowReactive",2],{"guide:\u002Fguides\u002Fmerge-split-pdf-scanned-docs":3,"guides:list":167},{"id":4,"title":5,"body":6,"category":145,"description":146,"extension":147,"faq":148,"meta":158,"navigation":159,"path":160,"seo":161,"stem":162,"toolSlugs":163,"updated":165,"__hash__":166},"guides\u002Fguides\u002Fmerge-split-pdf-scanned-docs.md","PDF 合并与拆分实操：把零散扫描件整理成一份干净文件",{"type":7,"value":8,"toc":135},"minimark",[9,14,18,27,31,34,37,47,50,54,57,88,91,98,102,109,112,115,118,122],[10,11,13],"h2",{"id":12},"场景扫描件为什么要整理","场景：扫描件为什么要整理",[15,16,17],"p",{},"扫描的麻烦不在扫，在扫完之后。身份证过了两遍机器，出来正反两个文件；合同签好回传，对方只肯收一个附件；月底报销，十几张单据各自成件，财务邮箱里塞满了你的邮件。把零散页面整理成一份页序正确的 PDF，收件的人不必挨个打开，你也不必被退回重传。",[15,19,20,21,26],{},"反方向的需求同样常见：材料里混进了空白页和误扫页，得清掉再发；上百页的合同，只需要把其中几页抽给对方看。合并、提取、拆分、删页，四个动作基本覆盖扫描件整理的全部日常。本站的",[22,23,25],"a",{"href":24},"\u002Ftools\u002Fdocument\u002Fpdf-process","PDF 处理","工具把这四件事放进同一个页面：按要做的操作选模式，导出结果即可，不必为拆两页纸去装一个桌面软件，也无需注册，打开页面就能用。",[10,28,30],{"id":29},"合并多份-pdf-拼成一份","合并：多份 PDF 拼成一份",[15,32,33],{},"切到合并模式，把文件依次拖入。有一条规则决定整个操作的成败：列表顺序就是输出页序，排在前面的文件，页面也排在前面。所以别一口气全拖进去再慢慢调，按目标页序一个个添加，加完从头核对一遍文件名——这是合并前最值钱的一步。",[15,35,36],{},"发现顺序不对，列表每一行都带着行内按钮，可以直接挪动位置；错得离谱就移除那一项，重新按序添加。动手前再过两件事：",[38,39,40,44],"ul",{},[41,42,43],"li",{},"文件数量：至少两个 PDF 才能合并，单个文件没有合并的必要；",[41,45,46],{},"书签取舍：跨文档合并不会保留各文件原有的目录书签，页面内部的批注则会留下。扫描件大多没有书签，不受影响；处理带目录的正式文档前，先想想书签丢了要不要紧。",[15,48,49],{},"核对无误，点「合并 N 个文件并下载」，成品直接落到本地。",[10,51,53],{"id":52},"拆分与提取按页码范围出文件","拆分与提取：按页码范围出文件",[15,55,56],{},"提取和逐页拆分共用同一套页码范围写法，规则一分钟就能上手：",[38,58,59,67,74,81],{},[41,60,61,62,66],{},"单页：",[63,64,65],"code",{},"7","，只取第 7 页；",[41,68,69,70,73],{},"连续区间：",[63,71,72],{},"1-3","，取第 1 到 3 页；",[41,75,76,77,80],{},"开区间：",[63,78,79],{},"8-","，末尾带横线，表示从第 8 页一直到最后一页；",[41,82,83,84,87],{},"组合：",[63,85,86],{},"1-3,5,8-","，几种写法可混用，分隔符不挑剔，中文逗号、英文逗号、顿号、空格都认。",[15,89,90],{},"逐页拆分想拆整份文件，范围留空即可（提取模式必须填一个合法范围）。",[15,92,93,94,97],{},"两种模式干的是两件事。提取把范围内的页面合成一个 PDF：合同第 5 到 12 页是补充协议，输入 ",[63,95,96],{},"5-12"," 导出新文件，原文件分毫不动。逐页拆分则是每页单独成文件，打包成一个 ZIP 下载——比如把 PPT 导出的 PDF 拆成单页，分给不同的人各自批注，互不干扰。ZIP 只打包、不做二次压缩，PDF 本身已是压缩格式，再压一遍收益很小，却会拖慢处理。",[10,99,101],{"id":100},"删页清掉空白页与误扫页","删页：清掉空白页与误扫页",[15,103,104,105,108],{},"扫描仪过纸时偶尔多吐一张空白页，或者手一抖，把桌面也扫了进去。删除页面模式与提取共用页码语法，语义相反：这里填的是要删掉的页码，导出的是剩余页面。删第 3 页和第 7 页，写 ",[63,106,107],{},"3,7","，其余页面原样保留。材料里用不上的附件页、同一张扫了两遍的重复页，也都走这个模式清掉，再对外发送。",[15,110,111],{},"有一点要说清：删页删的永远是导出的新文件，不是你手里的原件——文件全程没有离开本机，工具也不会改写它。稳妥起见，删之前把页码记在便签上，下载后打开翻一遍，确认删对了再发出去。真删错了也不慌，原件还在，重新跑一遍、改个页码，两分钟的事。",[10,113,114],{"id":114},"本地处理意味着什么",[15,116,117],{},"合同、证件、工资单这类材料，交给在线工具前总要先问一句：文件会被传到哪、存多久。这个工具里，读取、拆合、打包全部在浏览器本地完成，文件不会离开你的设备。对扫描件这种敏感材料，这不是锦上添花，而是能不能用的前提。两个边界顺带说明：带密码的加密 PDF 暂不支持，先在阅读器里输入密码、另存一份未加密副本再处理；整个操作是对象级的无损搬运——页面不重新渲染、不重新编码，导出的每一页与原文件完全一致，速度也快，耗时主要取决于文件体积而不是页数。",[10,119,121],{"id":120},"衔接转图片与图片转-pdf","衔接：转图片与图片转 PDF",[15,123,124,125,129,130,134],{},"PDF 整理常常只是链路中的一环。对方系统只收图片附件，用",[22,126,128],{"href":127},"\u002Ftools\u002Fdocument\u002Fpdf-to-image","PDF 转图片","按页码范围把每一页渲染成 PNG 或 JPG，支持 2x、3x 放大导出高清图，逐页打包 ZIP 带走。反过来，手机翻拍的纸质材料先用",[22,131,133],{"href":132},"\u002Ftools\u002Fdocument\u002Fimage-to-pdf","图片转 PDF","拼成一份：图片顺序可拖拽调整，页面可选跟随图片尺寸或 A4 适配。翻拍、合成、删掉拍糊的页，三步连起来，就是一条从纸面到成品的完整流水线。",{"title":136,"searchDepth":137,"depth":137,"links":138},"",2,[139,140,141,142,143,144],{"id":12,"depth":137,"text":13},{"id":29,"depth":137,"text":30},{"id":52,"depth":137,"text":53},{"id":100,"depth":137,"text":101},{"id":114,"depth":137,"text":114},{"id":120,"depth":137,"text":121},"document","扫描件东一页西一页？手把手把多个 PDF 合并成一份、按页码范围拆分提取、删掉空白页与误扫页再导出，全程浏览器本地处理，合同与证件扫描件不出本机。","md",[149,152,155],{"q":150,"a":151},"合并后的文件顺序不对怎么办？","合并前在列表里核对一遍顺序，工具按列表顺序拼接；发现不对就移除后重新按序添加，比合并后再拆省事。",{"q":153,"a":154},"能只提取某一章（比如第 5 到 12 页）吗？","可以，按页码范围拆分提取即可，输入起止页导出为新文件，原文件不受影响。",{"q":156,"a":157},"扫描件里有空白页要删，删错页怎么补救？","删除前记下页码，下载后打开翻一遍，确认删对了再用；文件全程本地处理，原文件始终在你手里，重新来一遍即可。",{},true,"\u002Fguides\u002Fmerge-split-pdf-scanned-docs",{"title":5,"description":146},"guides\u002Fmerge-split-pdf-scanned-docs",[164],"document\u002Fpdf-process","2026-09-11","kMaZF9wje2O-Ly1h1UEJyWIQ_iGDC1rqLhXx9yJKQy4",[168,176,183,191,200,202,208,214,222,229],{"path":169,"title":170,"description":171,"category":172,"toolSlugs":173,"updated":175},"\u002Fguides\u002Fbatch-watermark-images","批量给图片加水印防搬运：文字水印与 Logo 水印实操","一次给几十张图片加文字或 Logo 水印：九宫格位置与平铺铺满怎么选、透明度旋转怎么调才既防搬运又不毁图，水印大小随图片宽度等比缩放的原理与批量导出步骤。","image",[174],"image\u002Fwatermark","2026-09-10",{"path":177,"title":178,"description":179,"category":172,"toolSlugs":180,"updated":175},"\u002Fguides\u002Fcompress-image-to-200kb","图片压到 200KB 以内的三种方法：按质量压、按目标体积压、转格式","上传证件、填报名表总卡在体积限制？三种思路把图片压到 200KB 以内：按质量逐档试、直接指定目标体积自动逼近、换 WebP\u002FJPG 格式再压，附批量操作与画质权衡建议。",[181,182],"image\u002Fcompress","image\u002Fconvert",{"path":184,"title":185,"description":186,"category":187,"toolSlugs":188,"updated":190},"\u002Fguides\u002Fmake-qrcode-wifi-logo","二维码怎么做：网址码、WiFi 码、带中心 Logo 的定制码","三种最常见的二维码制作：网页链接码、连 WiFi 免输密码的 WiFi 码、带中心 Logo 的品牌码；配色与容错等级怎么配才既好看又扫得出，PNG\u002FSVG 导出与反向解析一次讲清。","developer",[189],"developer\u002Fqrcode","2026-09-13",{"path":192,"title":193,"description":194,"category":195,"toolSlugs":196,"updated":199},"\u002Fguides\u002Fmd5-vs-sha256-file-checksum","MD5 和 SHA-256 怎么选：文件校验入门","下载文件怕被篡改、传完文件怕损坏？讲清 MD5 与 SHA-256 的差异与各自适用场景，文本与文件摘要怎么算、校验值怎么比对，以及分块流式处理大文件的实操步骤。","general",[197,198],"developer\u002Fmd5","security\u002Ffile-hash","2026-09-15",{"path":160,"title":5,"description":146,"category":145,"toolSlugs":201,"updated":165},[164],{"path":203,"title":204,"description":205,"category":145,"toolSlugs":206,"updated":165},"\u002Fguides\u002Fprint-copybook-tianzige","田字格字帖打印指南：从生字表到 A4 成品","在家给孩子打印练字帖：田字格\u002F米字格\u002F回宫格怎么选、拼音标注与描红模式怎么配、内容输什么（生字、姓名、古诗），A4 版式直接打印或另存 PDF 的完整流程。",[207],"document\u002Fcopybook",{"path":209,"title":210,"description":211,"category":172,"toolSlugs":212,"updated":190},"\u002Fguides\u002Fremove-exif-location-before-sharing","发照片前先清 EXIF：你的位置信息可能就藏在原图里","手机原图自带拍摄时间、机型、GPS 坐标等 EXIF 元数据。讲清哪些信息会泄露、哪些平台会清除哪些不会，以及发图前用浏览器本地工具一键查看并清除 EXIF 的完整步骤。",[213],"image\u002Fexif",{"path":215,"title":216,"description":217,"category":172,"toolSlugs":218,"updated":221},"\u002Fguides\u002Fresize-crop-image-for-platforms","一张图适配所有平台：改尺寸与裁剪比例速查","头图要 16:9、封面要 1:1、简历照要 4:3？分清「改尺寸」与「裁剪」两件事：等比缩放保画质，按比例裁剪定构图，附常用平台比例速查表与批量处理流程。",[219,220],"image\u002Fresize","image\u002Fcrop","2026-09-17",{"path":223,"title":224,"description":225,"category":226,"toolSlugs":227,"updated":199},"\u002Fguides\u002Ftrim-video-lossless-vs-reencode","视频怎么裁出一段：无损截取与重编码怎么选","只想留视频里 30 秒精华？讲清无损截取（秒级出片、不改分辨率帧率）与重编码裁剪的原理差异、各自的画质与兼容性代价，以及双端滑杆精确选段到帧级的操作步骤。","audio-video",[228],"audio-video\u002Fvideo-trim",{"path":230,"title":231,"description":232,"category":187,"toolSlugs":233,"updated":235},"\u002Fguides\u002Fwhat-is-unix-timestamp","Unix 时间戳是什么：秒与毫秒怎么区分、怎么换算","一文讲清 Unix 时间戳：10 位秒级与 13 位毫秒级的自动判断规则、换算差 8 小时的三种常见原因、负数与超限值的边界，附三个真实排查案例与在线换算步骤。",[234],"developer\u002Ftimestamp","2026-09-08",1791906054496]