In that case, it's beyond what's possible with the theming system in Asciidoctor PDF, and Asciidoctor PDF in general.

Being able to use arbitrary templates for the header/footer will be a key requirement for asciidoctor-pdf.js (the browser-based predecessor that's starting to take shape). See https://github.com/mogztter/asciidoctor-pdf.js

Best Regards,

-Dan

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