pdf - 如何在pdf上每页设置关键字或（类似信息）？

Question

我有一个 pdf，它几乎有 300-400 页。我想设置每页的信息。

前任 ：

(Information will be hidden)

For page 4 = Information : history books
For page 5 = Information : history books
For page 6 = Information : history books

For page 7 = Information : biology books
For page 8 = Information : biology books
For page 9 = Information : biology books

.
.
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然后我可以轻松提取页面。

谢谢你的帮助

Answer 1

You are probably looking at a toolkit that will allow you to set some metadata within a PDF file. The most commonly used is probably XMP. The wiki also provides a list of toolkits that work with XMP. Adobe provides a toolkit free of charge under the BSD license. You may be interested in checking that out.