✂️ 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，选择或拖入文件，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。加密的 PDF 会提示输入密码（出现「打开密码」栏和「打开」按钮），输入密码并点「打开」后再继续。In the Split PDF: Choose or drop your files, set "Split mode", "Pages per file", "Ranges", then click "Split", "Download all (ZIP)". For an encrypted PDF, the page asks for its password (a Password field and an Open button appear) — enter it, click Open, then continue.
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.