# PDF.js Express Viewer Watermarks **URL:** \ **Category:** Technical Support\ **Created:** [April 20, 2022, 2:12pm UTC](https://pdfjs.community/t/pdf-js-express-viewer-watermarks/1614 "2022-04-20T14:12:48Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Logan](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/logan/32/13_2.png) [@Logan](https://pdfjs.community/u/Logan)\ **Post date:** [April 20, 2022, 2:12pm UTC](https://pdfjs.community/t/pdf-js-express-viewer-watermarks/1614/1 "2022-04-20T14:12:48Z")
Hi everyone, There was been many posts recently about watermarks appearing on the PDF.js Express Viewer product, even with a license key. Please make sure to follow these debugging steps before creating a ticket: - Make sure you are using the npm package `@pdftron/pdfjs-express-viewer` and not `@pdftron/pdfjs-express` - The watermark will always appear on localhost. It only gets removed in production environments - If you recently switched from `@pdftron/pdfjs-express` to `@pdftron/pdfjs-express-viewer`, make sure the static assets in `/public` get properly copied over. We recommend deleting the old assets and completely replacing them Thanks! Logan ---
**Author:** ![Logan](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/logan/32/13_2.png) [@Logan](https://pdfjs.community/u/Logan)\ **Post date:** [April 20, 2022, 2:13pm UTC](https://pdfjs.community/t/pdf-js-express-viewer-watermarks/1614/4 "2022-04-20T14:13:34Z")
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**Author:** ![mida](https://avatars.discourse-cdn.com/v4/letter/m/b2d939/32.png) [@mida](https://pdfjs.community/u/mida)\ **Post date:** [May 17, 2022, 5:14pm UTC](https://pdfjs.community/t/pdf-js-express-viewer-watermarks/1614/5 "2022-05-17T17:14:24Z")
Hi, can you kindly check on our account? It did not have watermarks before but when we changed our domain, the watermarks showed. Thanks