抱歉，也许我没有说清楚。
我在想用户可能想要两种类型的最终产品，一种是用于在手机和平板电脑上分发的 PDF 数字形式，另一种是印刷版本。如果超链接是像 URL 那样的显式链接，用户可能更喜欢印刷版本将超链接渲染为没有蓝色文本和下划线的形式（就像纯文本一样：http://www.mycoolsite.lookitup.org 没有颜色）。
而 PDF 的数字副本可能最好具有活动的超链接。（就像最后一段那样。）
这种格式选择应该是 PTXprint 中的一个选项。（但也许通过“color font”（彩色字体）选项已经部分实现了。）
至于最初的请求，听起来它是一张嵌入/隐藏在图片中的超链接。我怀疑那会是不同级别的复杂性。听起来很酷，我能看到这种功能的实用性。
（我以为 PDF 有能力在下方保持真正的超链接，而 @andy_pi 说的是，像 Sumatra PDF 这样的应用程序会看到文本字符串，将其识别为可能的 URL，并提议将其用作链接。你是这个意思吗？）
Sorry, maybe I wasn’t very clear.
I’m thinking that the user might want two types of end products, a digital form of the PDF for distribution on cellphones and tablets, etc. and a printed version. IFF the hyperlink is an overt link like a URL or some such, the user might prefer printed version to render the hyperlink without the blue text and underlying (just plain text like: http://www.mycoolsite.lookitup.org without the color).
Whereas the digital copy of the PDF might be nice to have it have live hyperlinks. (Much like in the last paragraph.)
This formatting choice might should be an option in PTXprint. (But maybe it kind of is already with the “color font” option.)
As to the original request, it sounds like it is a picture/image with a hyperlink embedded in/hidden under it. So that would be a different level of complexity I suspect. Sounds cool, and I could see the usefulness of such a capability.
(I was under the impression that PDFs had the ability to maintain real hyperlinks underneath, whereas what @andy_pi is saying, an app like Sumatra PDF sees the text string and recognizes it as a possible URL and offers to use it as a link. Is that what you are saying?)
机器翻译自 English
