Integrate DWS Viewer API with Your Own Backend

DWS Viewer API provides a programmatic API that allows you to easily integrate it with your backend. This backend can be a regular server-side application running in your infrastructure or in a cloud, or it could even be a serverless function. The API as such is language agnostic, the only requirement being an ability to communicate via HTTP.

Uploading a Document to DWS Viewer API

When you create a document by upload, your backend service sends the file to DWS Viewer API, which will manage the entire document lifecycle.

1. 1
   Your service uploads the document to DWS Viewer API, which stores the document.
2. 2
   Your service receives the document ID back, which it can use to reference the document later.
3. 3
   To be able to do this, it needs to persist the document ID in a permanent storage — for example, a database.

Viewing a Document in Your Web App

After you create a document via upload, you can open it via the PSPDFKit for Web SDK. Any changes made to the document are automatically persisted by DWS Viewer API.

1. 1
   A user requests a document to display in your web app running in a web browser.
2. 2
   Your app requests access to the document from your backend.
3. 3
   Your backend creates an session token for the requested document via DWS Viewer API’s API.
4. 4
   The session token is then passed to your web app.
5. 5
   The web app loads Nutrient for Web using the session token for authentication.
6. 6
   After successful authentication, it displays the document streamed from DWS Viewer API.