We support several Drupal 7 sites which use the PrinceXML commercial PDF engine, using the PrinceXML module which apparently was never ported to Drupal 8. Rather than rewrite what we have to work with one of the supported PDF engines, it would make our life simpler if Prince was natively supported.
Failing that, if there is a guide on how to manually add your own PDF engine that would be welcome.
Closed: outdated
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
PrinceXML is a proprietary and paid library.
You can ask their developers to create a plugin for entity_print.
Here's an example how to create a plugin for your own pdf engine:
https://www.drupal.org/project/entity_print/issues/3063998
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mPDF Plugin
Needs review