Hello Brody,
In mendix there are many widgets like PDF Separator, pdf utils, pdf suits, pdf parse, pdf generator, iframe widget check with that if any can help, there is external pdf splitting api also which provide some nice feature.
PDF.co PDF4me
Did you try this marketplace module? It seems like this is what you need.
https://marketplace.mendix.com/link/component/217435
If you are facing problems splitting your PDF file into 30 pages you can take the help of an effective and easiest tool called Softaken PDF Splitter Software this effective tool will smoothly split your PDF file into 30 pages in a proper manner without facing any issues and this tool is the easiest tool to use also this great tool gives you 100% accuracy and safety. Moreover, this effective tool works in all editions of Windows OS.
If you want to split your PDF file into 30 pages and you are facing issues completing this task in this situation I recommend a unique utility known as PDFCHAMP Split PDF file Tool. This tool will smoothly split your PDF file into 30 pages also you can specify the page range as per your request without any issues and wasting time this tool is very easy to use and this tool gives you 100% accuracy and safety. Moreover, this utility works on all Windows OS.