# Can the licensekey be used offline

**URL:** <https://pdfjs.community/t/can-the-licensekey-be-used-offline/1606>\
**Category:** Technical Support\
**Created:** [April 19, 2022, 11:44am UTC](https://pdfjs.community/t/can-the-licensekey-be-used-offline/1606 "2022-04-19T11:44:19Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/ffbcd25c7d423db8d5acd5db201c272f4db306dd.png) [@system](https://pdfjs.community/u/system)\
**Post date:** [April 19, 2022, 11:44am UTC](https://pdfjs.community/t/can-the-licensekey-be-used-offline/1606/3 "2022-04-19T11:44:22Z")

</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>)
- [Manually Download & integrate PDF.js Express Plus - Integrate into your application](https://pdfjs.express/documentation/get-started/manually#integrate-into-your-application)
- [Integrating PDF.js Express Plus with Vue.js - Prerequisites](https://pdfjs.express/documentation/get-started/vue#prerequisites)

APIs:
- [Core - preloadPDFWorker(pdfBackendType, workerHandlers)](https://pdfjs.express/api/Core.html#.preloadPDFWorker__anchor)
- [UI.MentionsManager - getUserData()](https://pdfjs.express/api/UI.MentionsManager.html#getUserData__anchor)
- [Core.Document - initOfflineDB()](https://pdfjs.express/api/Core.Document.html#initOfflineDB__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/1028/3)
- [The active licence key is not working](https://pdfjs.community/t/the-active-licence-key-is-not-working/1099/8)
- [PDf embed for WordPress](https://pdfjs.community/t/pdf-embed-for-wordpress/1447/6)

---

_[View the full topic](https://pdfjs.community/t/can-the-licensekey-be-used-offline/1606)._