# Staging environment

**URL:** <https://pdfjs.community/t/staging-environment/1884>\
**Category:** General Discussion\
**Tags:** pdfjs-express\
**Created:** [July 17, 2022, 10:06am UTC](https://pdfjs.community/t/staging-environment/1884 "2022-07-17T10:06:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tristan](https://avatars.discourse-cdn.com/v4/letter/t/96bed5/32.png) [@tristan](https://pdfjs.community/u/tristan)\
**Post date:** [July 17, 2022, 10:06am UTC](https://pdfjs.community/t/staging-environment/1884/1 "2022-07-17T10:06:51Z")

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**Which product are you using?**  
PDF.js Express Plus

**PDF.js Express Version**

**Detailed description of issue**  
I am considering to buy PDF Express JS Professional Annotations.  
How does the license work if I have a development environment on another subdomain? the viewer would works but what if I want to test the annotations saving etc…

## **Expected behaviour**

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

**Link to document**  
{Provide a link to the document in question if possible}

**Code snippet**  
{Provide a relevant code snippet}

---

<div class="post-metadata">

**Author:** ![kkim](https://avatars.discourse-cdn.com/v4/letter/k/3ab097/32.png) [@kkim](https://pdfjs.community/u/kkim)\
**Post date:** [July 18, 2022, 4:03pm UTC](https://pdfjs.community/t/staging-environment/1884/2 "2022-07-18T16:03:53Z")

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Hi Tristan,

Thank you for your interest in PDF.JS Express Plus!

The client key is domain locked and will only work on the specified domain (and any subdomains):

> **[Pricing for PDF.js Express Utility API | Documentation](https://pdfjs.express/documentation/utils/pricing#how-to-sign-up)**

Please note that when testing in testing/localhost environment, only the first 500 actions per month will be free and the output will be mangled/watermarked but still usable for testing purposes:

> **[Development | Documentation](https://pdfjs.express/documentation/utils/development)**

Once you have the keys, you can follow the guide here to setup:

> **[PDF.js Express Viewer Download & Integration | Documentation](https://pdfjs.express/documentation/get-started/add-license-key)**

Best Regards,

Kevin Kim  
Web Development Support Engineer  
PDFTron Systems, Inc.