PDF 拆分器

拆分 PDF 文件 — 免费

Extract pages or split a PDF into separate files in seconds — pick exact pages or ranges, processed securely on our server and deleted automatically afterward.

  • 按页面、范围或逐页拆分
  • 保留原始质量和格式
  • 免费 · 无需注册 · 文件自动删除

每个 PDF 最大 50 MB

Split into pages

拖入一份 PDF 以拆分

PDF

文件在处理后自动删除通过 HTTPS 安全处理

Frequently Asked Questions

拖入一份 PDF,并选择三种拆分模式之一:「页面范围」提取你指定的页面(例如 1-3、5、8-10),「每 N 页」将其切分为等量片段,或「每页一份 PDF」拆分为一份份单页 PDF。多份输出会打包成 ZIP,方便一键下载。

usage

用短横线表示范围,用逗号表示单独的选择——「1-3, 5, 8-10」会将第 1、2、3、5、8、9、10 页提取到输出中。空格会被忽略,重叠的范围会去重,超出范围的页码会自动裁剪到文档的实际长度。

usage

使用页面范围模式,输入章节的起始-结束页(例如「47-86」)。输出是一个仅包含这些页面的 PDF,并保留原始排版、字体和嵌入图片。无需对整份文档进行扫描和 OCR。

tips

可以——使用「每 N 页」模式并选择分块大小。一份 200 页的报告每 20 页拆分一次,会生成 10 个 PDF,每个都远低于常见的邮件附件大小限制。ZIP 会按 part-01、part-02 等顺序保留它们。

features

逐页拆分的 PDF 适用于需要单独归档的多页扫描记录(医疗、法律),适合单独销售书籍章节,也适合在逐页处理的工作流中进行并行处理(OCR 流水线、签名收集)。

features

不会——pdf-lib 会将整页从源文件复制到输出文件,因此字体、图片、矢量内容和表单字段都保持逐字节一致。各部分的总体积与原文件大致相同。

quality

Yes — your PDF is uploaded over an encrypted (HTTPS) connection, processed on our secure server, and deleted automatically afterward. We never store, view or share your files. For legal discovery, medical records or HR workflows with a strict no-upload policy, use a desktop PDF tool instead.

privacy

Yes — free, no signup, no watermark, no daily cap. Files up to 50 MB are processed on our secure server and deleted automatically afterward. Use it commercially for client work without attribution.

pricing

选择“按文件大小”模式并以 MB 设定上限。工具会在该上限内尽量将完整页面填入每个分册,达到上限后再开始新的分册,最后将它们全部打包为 ZIP。这对应对邮件附件大小限制,或拒收超过固定大小文件的上传平台非常实用。

usage

拆分只能把一个 PDF 拆开。若要将多个 PDF 合并成一个,请用「合并 PDF」;若要删除或重新排列单个文件中的页面,请用「整理 PDF」。只有在你想提取页码范围或将一份文档拆成多个文件时,拆分才是正确选择。

usage

Use Page ranges when you know exactly which pages you need, like one chapter or exhibit. Use Every N pages to cut a long document into equal chunks for review or distribution. Use One PDF per page to burst a scan into individually filed pages. Use By file size when the destination — email, an upload portal — enforces a byte limit rather than a page count: set the Max MB per part field and the tool fills each part with as many whole pages as fit.

tips

The final part simply gets whatever pages remain — a 22-page PDF split every 5 pages produces four 5-page parts plus one 2-page part, rather than an error or a padded file. Every part keeps the original page content untouched, just grouped in that trailing, smaller chunk.

technical

You can enter any value from 0.1 MB upward in 0.5 MB increments, and the tool packs as many whole pages as fit under that cap into each part before starting a new one. Setting it lower than your single largest page still produces one oversized part for that page, because pages are never split apart mid-page.

technical

How Split PDF helps you get it done

Real problems it solves every day — for businesses, creators, and everyday tasks. Find the use case that fits you and start in seconds.

Education

从电子书中提取单个章节

使用页码范围(例如「47-86」)从 400 页的参考 PDF 中只提取您需要的章节。分享更快,在平板上加载更快,标注也更方便。

Finance

按账户拆分银行对账单

联名银行对账单 PDF 通常会为每位账户持有人设有单独的部分。用页码范围提取每位持有人的部分,以便单独归档或分享。

For Business

将大型报告拆分成便于邮件发送的分块

200 页的报告超出了常见的邮件附件大小限制。可将其拆分为每段 20 页依次发送,或逐个上传到文件分享服务。

Productivity

将多页扫描件拆分成独立文件

一叠扫描的混合文档(水电账单、证件、收据)需要逐份归档。将其拆分为每页一个 PDF,然后逐个重命名并归档。

Legal

从合同中提取已签字页面

长篇合同的签署页通常是最后两三页。您可以只提取这几页,供对方留存,或用于只需已签署签名页的 HR 归档系统。

Education

分发定制化课程资料

老师准备一份总的 PDF,需要把不同部分分发给不同的学生小组。按页码范围拆分,即可为每个小组生成各自的讲义。

Official Documents

Prep Single-Page Uploads for Immigration Forms

Visa, passport and immigration portals often require every supporting document as its own single-page file. Use One PDF per page mode to burst a scanned bundle of IDs, bank letters and photos into individually named files ready to upload one at a time.

Legal

Clear Court E-Filing Size Limits

Court e-filing systems and government portals often reject PDFs over a hard size cap, commonly 10-25 MB. Use By file size mode to automatically break a large exhibit bundle into parts that each clear the limit, so nothing bounces back at submission.

For Business

Share Just One Investor Deck Section

数据室 PDF 中的股权结构表页、财务模型和法律附录往往是给不同接收方看的。使用"页码范围"只提取某位特定投资人或顾问需要看到的部分,无需发送整份文件。

Privacy & Security

Separate Multi-Patient Records Before Filing

Home-care agencies and small clinics often scan several patients' visit notes into one combined PDF. Use One PDF per page (or per-patient page ranges) to split the bundle into individual patient files before filing, so no single record shows another patient's information.