We are using a wrapper around PrinceXML until we can move into a separate rendering engine. We want to be able to offer the same layout features of such an engine, hopefully much faster.

You can have a look at our (WIP) set of templates at https://react.onedoclabs.com/ui/templates where the images are automatically built from the PDFs themselves.

We are trying things out to see how we can make a live preview for development purposes but the challenges of pagination are quite hard to solve in an elegant way at the moment. We are experimenting with Taffy to see how it could fit our use case but this is still a very early tentative.