# Pdfjs.express watermark despite licence key & correct domain

**URL:** https://pdfjs.community/t/pdfjs-express-watermark-despite-licence-key-correct-domain/1592
**Category:** Technical Support
**Created:** [April 16, 2022, 7:42am UTC](https://pdfjs.community/t/pdfjs-express-watermark-despite-licence-key-correct-domain/1592 "2022-04-16T07:42:07Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![system](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/ffbcd25c7d423db8d5acd5db201c272f4db306dd.png) [@system](https://pdfjs.community/u/system)
#### Post date: [April 16, 2022, 7:42am UTC](https://pdfjs.community/t/pdfjs-express-watermark-despite-licence-key-correct-domain/1592/3 "2022-04-16T07:42:13Z")

</div>

**Hello, I’m Ron, an automated tech support bot 🤖**

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

Guides:
- [Adding your license key - PDF.js Express Plus License Keys](https://pdfjs.express/documentation/get-started/add-license-key#pdf.js-express-plus-license-keys-<span-class='plus'></span>)
- [Add a watermark to a document using the Express REST API - Body params](https://pdfjs.express/documentation/utils/watermark#body-params)
- [Signatures with PDF.js Express](https://pdfjs.express/documentation/signature/overview)

APIs:
- [Core.Document - requirePage(pageNumber)](https://pdfjs.express/api/Core.Document.html#requirePage__anchor)
- [ExpressUtils(optionsopt) - # async watermark(options) → {Promise.}](https://pdfjs.express/api/utils/ExpressUtils.html#watermark__anchor)
- [PDF.js Express Utilities](https://pdfjs.express/api/utils/index.html#__anchor)

Forums:
- [I have license, but still show watermark](https://pdfjs.community/t/i-have-license-but-still-show-watermark/1078/1)
- [Can I remove watermark from PDF.js viewer (free version)?](https://pdfjs.community/t/can-i-remove-watermark-from-pdf-js-viewer-free-version/1166/1)
- [Can I remove pdfjs.express watermark from viewer?](https://pdfjs.community/t/can-i-remove-pdfjs-express-watermark-from-viewer/1073/4)

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