Store User-Uploaded Files
When you want to store a file uploaded by an end user, the file needs to be uploaded to your service first, and then forwarded to PSPDFKit Document Engine.
A user uploads a document to your backend.
Your backend forwards the uploaded PDF file to PSPDFKit Document Engine. In return, it receives a document identifier. On your Document Engine, you only have to store the identifier; we store the PDF document, its annotations, and the meta information. Document files are stored in the asset storage, which can be one of the supported asset storage backends.