I don't know if this will help, but have you evaluated SWISH::Filters::Pdf2HTML?

from CPAN:

- Perl extension for filtering PDF documents with Swish-e
This is a plug-in module that uses the xpdf package to convert PDF documents to html for indexing by Swish-e. Any info tags found in the PDF document are created as meta tags.
This filter plug-in requires the xpdf package

In reply to Re: Convert PDF to HTML (or JPEG) by ww
in thread Convert PDF to HTML (or JPEG) by Anonymous Monk

Title:
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and:  <code> code here </code>
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