# Watermark doesn't removed after using License Key

**URL:** <https://pdfjs.community/t/watermark-doesnt-removed-after-using-license-key/152>\
**Category:** Technical Support\
**Created:** [July 24, 2020, 7:27pm UTC](https://pdfjs.community/t/watermark-doesnt-removed-after-using-license-key/152 "2020-07-24T19:27:44Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**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:** [July 24, 2020, 7:45pm UTC](https://pdfjs.community/t/watermark-doesnt-removed-after-using-license-key/152/2 "2020-07-24T19:45:37Z")

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Hi,

Your license key is locked to a single domain, so please make sure the domain name licensed with the key matches the domain your are using. You can edit the domain any time on your [profile page](https://pdfjs.express/profile).

If you are developing on localhost, the watermark will not be removed but there will be a log saying:

```javascript
PDFJS.express: Development environment detected. This license key is currently registered to YOUR_DOMAIN

```

Please refer to the [documentation](https://pdfjs.express/documentation/get-started/add-license-key).

Thanks,  
Logan

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