I'm using this fork to contribute features and fixes to the upstream project. In order to create good pull requests, I'm rebasing my feature branches, squashing and reordering commits, etc. If you fork this repository be aware that my development branches may rewrite history without prior notice.
Starting with Qt 5.15, there is a Qt PDF module for rendering PDF documents.
Examine whether this module could be a replacement for Poppler, further reducing the dependency on external libraries outside of Qt.