Maybe it is worth for you to have a look
here. There you can download a pdftk plug-in for Vim [an "advanced text editor"].
Quote:
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Originally Posted by @ linked page
Vim users can also install my plug-in for easily editing PDF code. When you open a PDF in Vim, the plug-in calls pdftk to uncompress the page streams, so they are editable. When you save the PDF, the plug-in uses pdftk to repair and re-compress the PDF.
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This is quite handy!
You can find Vim versions for Windows, Linux, & Mac.