# Activate SignatureWidgetAnnotation programmatically

**URL:** <https://pdfjs.community/t/activate-signaturewidgetannotation-programmatically/1709>\
**Category:** Technical Support\
**Tags:** pdfjs-express\
**Created:** [May 25, 2022, 8:38pm UTC](https://pdfjs.community/t/activate-signaturewidgetannotation-programmatically/1709 "2022-05-25T20:38:06Z")\
**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:** [May 25, 2022, 8:38pm UTC](https://pdfjs.community/t/activate-signaturewidgetannotation-programmatically/1709/3 "2022-05-25T20:38:12Z")

</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:
- [APIs for customizing UI](https://pdfjs.express/documentation/ui-customization/api.8)
- [Config files](https://pdfjs.express/documentation/learn-more/advanced/config-files.8)
- [PDF.js Express Viewer APIs](https://pdfjs.express/documentation/viewer/api)

APIs:
- [PDF.js Express Utilities](https://pdfjs.express/api/utils/index.html#__anchor)
- [UI.VerificationOptions](https://pdfjs.express/api/UI.VerificationOptions.html#__anchor)
- [UndefinedWebViewer(options, viewerElement)](https://pdfjs.express/api/global.html#WebViewer__anchor)

Forums:
- [Watermark issue](https://pdfjs.community/t/watermark-issue/1586/1)
- [Error when changing default language](https://pdfjs.community/t/error-when-changing-default-language/1499/1)
- [I have free license key (pdf express viewer), but still showing watermark](https://pdfjs.community/t/i-have-free-license-key-pdf-express-viewer-but-still-showing-watermark/1601/1)

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_[View the full topic](https://pdfjs.community/t/activate-signaturewidgetannotation-programmatically/1709)._