Forge viewer - Download pdf derivative via API

Question

Can I download a pdf from a derivative via API?

Answer 1

It's not clear to me what exactly you're asking for. Below are a couple of answers to what I think your question could be:

You have uploaded a PDF file to the Model Derivative service, and you would like to download the results of the conversion?

While you can download the derivatives of 3D models, I'm afraid it is not possible for PDFs. When processing PDFs, the Model Derivative service converts them to image pyramids to enable Google Maps-like experience where zooming in on different parts of the PDF will load in higher resolution images of the area.

However, if your goal is to be able to load a PDF into the viewer without the Model Derivative service, note that this is also possible: https://aps.autodesk.com/blog/dwf-and-pdf-support-forge-viewer

You have uploaded a design (e.g., a Revit design) to the Model Derivative service, and you would like to download the PDF output that the service generated?

If you're interested in converting Revit designs to PDFs, I would suggest that you generate the PDFs using the Design Automation for Revit as this service is better suited for these types of tasks.