✂️ PDF 拆分Split PDF
把一个 PDF 拆成多个文件：每页单独一个、每 N 页一份，或按自定义范围（如 1-3,4-10）分段，结果可逐个下载或打包 ZIP，文件只在本地处理。Split one PDF into several files — one file per page, every N pages, or custom ranges such as 1-3,4-10 — then download each part or everything as a ZIP. Processed locally.
使用说明与常见问题How-to & FAQ
「PDF 拆分」是什么？What is the Split PDF tool?
把一个 PDF 拆成多个文件：每页单独一个、每 N 页一份，或按自定义范围（如 1-3,4-10）分段，结果可逐个下载或打包 ZIP，文件只在本地处理。Split one PDF into several files — one file per page, every N pages, or custom ranges such as 1-3,4-10 — then download each part or everything as a ZIP. Processed locally.
如何使用「PDF 拆分」？How do I use the Split PDF tool?
在「PDF 拆分」中，按需设置「拆分方式」、「每份页数」、「拆分范围」等选项，然后点击「拆分」、「全部下载（ZIP）」按钮即可。支持拖放文件。加密的 PDF 选好后会先出现「打开密码」栏和「打开」按钮，输入密码点「打开」后再继续。In the Split PDF: Set "Split mode", "Pages per file", "Ranges", then click "Split", "Download all (ZIP)". Drag-and-drop files is supported. For an encrypted PDF, a Password field and an Open button appear after you choose it — enter the password and click Open first.
有哪几种拆分方式？What split modes are there?
每页一个文件；每 N 页一份（最后一份可能不足 N 页）；或自定义范围，每个逗号分隔的范围生成一个文件，例如 1-3,4-6,7- 会得到 3 个文件。One file per page; every N pages (the last part may be shorter); or custom ranges where each comma-separated range becomes one file — 1-3,4-6,7- gives three files.
拆分会降低画质吗？Does splitting reduce quality?
不会。页面是原样复制的（文字、矢量、图片都不重新压缩），只是放进新的文件里。No. Pages are copied as-is — text, vector graphics and images are not re-compressed — just placed into new files.
文件名是怎么命名的？How are output files named?
按“原文件名-p起始页-结束页.pdf”命名，例如 report-p1-3.pdf，方便识别和排序；多个文件可以一键打包成 ZIP 下载。As originalname-pStart-End.pdf, e.g. report-p1-3.pdf, so they sort and identify easily; multiple files can be downloaded together as a ZIP.
加密的 PDF 可以处理吗？Can it handle password-protected PDFs?
可以。如果 PDF 需要打开密码，会提示你输入；只有权限限制（无打开密码）的文件会自动打开。输出文件不再带密码，如需加密请使用“PDF 加密”工具。Yes. If the PDF needs an open password you'll be asked for it; files with only permission restrictions open automatically. The output is not password-protected — use the Protect PDF tool if needed.
文件会上传到服务器吗？Are my files uploaded?
不会。PDF 在你的浏览器里用 pdf-lib / pdf.js 处理，文件不会离开你的设备，关闭页面后不留存任何数据。No. The PDF is processed in your browser with pdf-lib / pdf.js; files never leave your device and nothing is kept after you close the page.
「PDF 拆分」免费吗？需要注册吗？Is the Split PDF free? Do I need an account?
「PDF 拆分」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Split PDF is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.