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Merge PDF

Merge several PDFs into one and reorder them; no limit on files or pages

PDF 在你的浏览器里合并,不上传服务器

把 PDF 拖到这里,或点击选择(可多选)

支持选择多个文件;合并顺序即下方列表顺序,可逐个调整

提示:合并会保留每个 PDF 的原有页面内容与尺寸(不同页面尺寸可以混排)。已加密(需要密码打开)的 PDF 无法合并,请先去密码。

PDF 合并的常见用法

材料提交的场景最多。入职材料(身份证、学历证明、体检报告)、报销单据(发票、行程单、审批单)、投标与资质文件(营业执照、授权书、业绩证明)通常要求"合并成一份 PDF 上传"。这类文件往往来自不同来源、页数不一,用本工具合并后顺序可控、格式不乱。

顺序怎么定。合并顺序完全按列表从上到下。添加后可用 ↑ ↓ 调整,也可以把最需要放前面的文件先单独上传、再上传其余文件。建议按对方的清单顺序排列,能明显减少被退回补正的概率。

为什么有的 PDF 合并不了。最常见的原因是文件带打开密码(加密),合并前必须先解密;其次是文件本身损坏或并非真正的 PDF(例如把 .doc 直接改名为 .pdf)。遇到这两种情况页面会明确指出是哪个文件的问题,其余文件不受影响。

Privacy note:合并过程完全在你的浏览器内完成——文件通过 JavaScript 直接读取并在本机内存中重组,没有任何上传。合同、身份证、银行流水这类材料用在线工具处理时,这一点比"是否好用"更重要,你可以在开发者工具的 Network 面板核验。

FAQ

Does merging reduce clarity?

No. Merging just moves the page objects of all files into one document: page content and embedded images are copied verbatim, with no re-encoding and no recompression.

Will bookmarks, forms or hyperlinks be lost?

Visible page content and annotations are kept; but document-level bookmarks/outlines, fillable form fields and some interactive scripts may stop working after merging - an inherent limit of browser-side merging. Your original files are never modified, so keep them with confidence.

How many files and how much volume at most?

There is no hard limit on count or page number; the practical limit is your machine's memory. Keep a single run under 200MB; for very large sets, merge in batches.

Can I merge only certain pages of each file?

This page merges whole files. To pick pages, first extract the ones you need with our PDF split tool, then merge.

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