Tl;dr, but

>  I've noticed that some characters aren't as expected when extracted: 

PDF allows to embed it's own fonts, and the encoding of characters is sometimes random then.

You can solve it for a specific PDF document only by scanning the affected font number and manually building a translation table into a hash.

HTH! :)

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Wikisyntax for the Monastery

In reply to Re: Build a PDF book index by LanX
in thread Build a PDF book index by markong

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