# Commercial licence activation **URL:** \ **Category:** Technical Support\ **Tags:** pdfjs-express\ **Created:** [October 6, 2021, 7:09pm UTC](https://pdfjs.community/t/commercial-licence-activation/1035 "2021-10-06T19:09:34Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/ffbcd25c7d423db8d5acd5db201c272f4db306dd.png) [@system](https://pdfjs.community/u/system)\ **Post date:** [October 6, 2021, 7:09pm UTC](https://pdfjs.community/t/commercial-licence-activation/1035/2 "2021-10-06T19:09:38Z")
**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: - [Rich text](https://pdfjs.express/documentation/annotation/rich-text.8) - [PDF.js Express annotations - Get started](https://pdfjs.express/documentation/annotation/overview#get-started) - [Open a document from Blob](https://pdfjs.express/documentation/basic-operations/open-document/blob) APIs: - [Core.DocumentViewer - setDocumentXFDFRetriever(retriever)](https://pdfjs.express/api/Core.DocumentViewer.html#setDocumentXFDFRetriever__anchor) - [Core.Document - getClientId()](https://pdfjs.express/api/Core.Document.html#getClientId__anchor) - [Core.Annotations.RotationUtils - PathCustomAnnotationRotationMixin()](https://pdfjs.express/api/Core.Annotations.RotationUtils.html#PathCustomAnnotationRotationMixin__anchor) Forums: - [Licence of PDFJS Express with NO connection to your server](https://pdfjs.community/t/licence-of-pdfjs-express-with-no-connection-to-your-server/1028/1) - [CORS issue correspondence](https://pdfjs.community/t/cors-issue-correspondence/878/1) - [Mouse Coordinates / Annotations Coordinates](https://pdfjs.community/t/mouse-coordinates-annotations-coordinates/1014/1) --- _[View the full topic](https://pdfjs.community/t/commercial-licence-activation/1035)._