DWS Viewer API
Stream, render, and collaborate on documents without the backend headaches
DWS Viewer API is a cloud-based deployment option that allows you to render PDFs, Office files, and images securely in the browser with backend performance. Add annotations, edit, fill forms, and collaborate in real time — no infrastructure required.
Public preview
DWS Viewer API is now in public preview and ready for you to build with today.
Start for free — no servers, no friction.
Start building today
Why DWS Viewer API
Instant performance gains — Stream rendering from the cloud for faster load times, smoother UX, and zero infrastructure lag — even with large documents and images.
Effortless onboarding — Deploy the Web SDK in minutes — now with cloud-powered features once exclusive to our self-hosted engine.
Get to market faster — Add new PDF functionality to your application quickly with the use of a token. No infrastructure setup or maintenance required.
Enhanced security — Keep documents in the cloud and off local devices, reducing risk of exfiltration or misuse.
Unified API for all platforms — Easily integrate DWS Viewer API with your project in any programming language.
Expand your app’s offering
DWS Viewer API is a suite of tools made to grow with your web app. Start with what you need now and add more components as your requirements grow. Test all these components in our trial.
Viewer
Forms
Annotations
Signatures
Collaboration
Document viewing
Upload a document and embed it in your web app to view PDFs, Office files, and PNG, JPG, and TIFF documents.
Form viewing and filling
Provide users with a convenient way to view and fill out PDF forms with native controls.
Mark up documents
Use the various annotation tools to highlight or underline text, add notes or shape annotations, and more.
Sign documents
Add electronic signatures to let your users sign digital documents using drawn, typed, or image signatures.
Collaboration
Use the power of Instant to let multiple users comment and annotate on the same document in real time.
Document viewing
Upload a document and embed it in your web app to view PDFs, Office files, and PNG, JPG, and TIFF documents.
Form viewing and filling
Mark up documents
Use the various annotation tools to highlight or underline text, add notes or shape annotations, and more.
Sign documents
Add electronic signatures to let your users sign digital documents using drawn, typed, or image signatures.
Collaboration
Use the power of Instant to let multiple users comment and annotate on the same document in real time.
All available components
Enterprise-grade security
Security isn't a feature — it’s the foundation.
Storage
Uploaded files are stored and hosted in the cloud and can be viewed and worked on in the browser. This means files can be kept in a central location, which eliminates the need for users to download files to their local machines.
Document permissions
DWS Viewer API gives you full control over who has access to and what can be done on a document through configurable tokens, while the dashboard helps you keep track of all your documents.
Encryption
With DWS Viewer API, your data remains secure. We encrypt data both at rest in our infrastructure and in transit by enforcing HTTPS. We also support opening and editing password-protected documents.
Try it today
Start building with DWS Viewer API in minutes — no payment info required.