[转]使用Pdftk合并PDF文件

link: http://bbs.haopdf.cn/viewthread.php?tid=441

PDF文件的跨平台特性使其应用广泛，我们在工作学习中经常接触此类文件，但从网上得到的PDF文档，经常是一篇文章中单独页面，怎么把这些单独的页面重新拼合成完整的文档就成了不小的问题。

当然，我们可以借助于Adobe Acrobat中的“Create PDF|From Multiple Files”合并这些单独的页面，但Acrobat是Adobe公司的商业软件，很多朋友由于版权问题并不会安装Acrobat。那么，我们能够使用什么软件来实现同样的功能呢？那就是 Pdftk。

Pdftk是由Sid Steward写的一个PDF增强软件，也就是所谓的PDF Hacks。它可以合并/分割PDF文档、解开必要的输入密码、输出加密、给PDF文档加水印、从PDF文档中解出附件、将PDF文档变成一页等等，能够做到操作PDF文档的所有事情。

其合并文档的具体用法为：

合并多个文档成一个文档：

pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf

使用参数：

pdftk A=1.pdf B=2.pdf cat A B output 12.pdf

使用通配符：

pdftk *.pdf cat output combined.pdf

从几个文档中分割内容合并成一个文档：

pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf

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