Pdfjs-express vs webviewer license key

PDF.js Express Version
@pdftron/webviewer 8.5.0

Detailed description of issue
We need this feature

so we are using @pdftron/webviewer

We have a license key for PDF.js Express Plus.

Watermarks are still present when used in a subdomain of the root domain that’s indicated in our license.

Expected behaviour

There should be no watermarks

Does your issue happen with every document, or just one?

Every document

Code snippet

const instance = await WebViewer(
          licenseKey: process.env.NEXT_PUBLIC_PDFEXPRESS_LICENSE_KEY,
          path: '/pdftron',

Hello, I’m Ron, an automated tech support bot :robot:

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:


I have updated this question to follow the format. Can we kindly have an answer pls? Thanks!!


To use PDFTron WebViewer you must purchase a different license. To do so, get in touch with our sales team here. If you purchase a WebViewer license, we will happily refund you the cost of your Express license.


Thank you very much! Will contact them and will let you know once we have a new license so you can process a refund for us.