Access to bpmn diff url with my own .bpmn file by default

Hello, i need a bpmn diff that can open my own bpmn diagram when i make the request to the website (demo.bpmn.io/diff). Indeed he actually load another test bpmn diagram, and i would like to change it, its possible ?

Thanks a lot

Fantemis

The diffing project is open source: https://github.com/bpmn-io/bpmn-js-differ

Feel free to modify it to your needs.