Thread: How do I find the Chapter and or Page break in a PDF
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Old 01-26-2024, 01:00 PM   #8
kovidgoyal
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Let's count the reasons:

1) there is no guarantee bookmarks entries are chapter starts
2) PDF consists of a bunch of font glyphs placed at absolute co-ordinates on the page. A bookmark or any link really is also just another co-ordinate on a page. There is no way to map that to some semantic element reliably. One has to use heuristics.
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