Hello, friends! Thank you all for your patience 
@projectmuse.dev,
Unfortunately, the result of the plugin conversion can be saved as text only. Thus, if you save the output file URL into your database the data type should be text.
You can refer to this example:
Bubble Page to PDF - New Plugin from Zeroqode - Showcase / Plugins - Bubble Forum
Yes, it is absolutely possible. 
@jpiercebbg,
The plugin is designed to covert to PDF the content of the page it “sees” on the page load. If the page viewport appears a mobile size - the resulting PDF file will contain a document with small pages, mobile-sized, just as it was previewed on the device before the conversion.
As a workaround, we can suggest you create a non-responsive page with the convenient for you design and formatting which will satisfy your needs as a resulting PDF file after the conversion.
This means, you can create a separate page with the content you want to convert to PDF having the same formatting and sizing, and open and convert it, instead of responsive page that’ll adapt for the device viewport and change the PDF file layout after conversion.
Hope it helps and makes sense for you 
@tylerboodman,
Thank you for your message. Well, the latest convert to PDF action of this plugin is running on the server-side (which provides a high PDF document quality). Still, it is fact that at the moment plugin can not run on the backend workflow. We are working on this and hope to release a new plugin version that’ll contain the most requested and necessary functionalities.
Thanks! Regards,
Zeroqode Support Team