encoding - 粘贴从 PDF 复制的文本？

Question

我有一个 PDF 文件，它只包含文本。

当我复制如下文本时：

payload

并尝试将其粘贴到 Notepad++ 中，得到如下框：

我尝试在 Notepad++ 中更改编码，但看不到实际文本。

这发生在一个特定的 PDF 文件中。

我已验证 PDF 的安全性允许复制：

我发现了另一件事，如果我在 PDF 中搜索一些文本，尽管搜索的词在文档中，但 find 命令无法找到文本。

如何粘贴从此类文件中复制的文本？

标签： encodingadobeacrobat

Answer 1

Though you don't include the PDF file in your question, it's fair to assume the problem is what it always is with such files - the PDF file does not provide a correct character code to Unicode translation table.

In such files, searching doesn't work and copy / paste doesn't work either, because Acrobat doesn't know what these things on the page are supposed to mean.

The problem is usually unfixable - meaning, there isn't generally something you can do to fix this particular document so that it will start to work.

A possible work-around - and this will sound stupid - is to convert the PDF to images and perform OCR on it. The OCR algorithm, if it handles the file correctly, will normally insert proper text that can be searched or copied.