# How can I "require" a signature?

**URL:** <https://pdfjs.community/t/how-can-i-require-a-signature/1410>\
**Category:** Technical Support\
**Tags:** pdfjs-express\
**Created:** [February 24, 2022, 9:27pm UTC](https://pdfjs.community/t/how-can-i-require-a-signature/1410 "2022-02-24T21:27:47Z")\
**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:** [February 24, 2022, 9:27pm UTC](https://pdfjs.community/t/how-can-i-require-a-signature/1410/3 "2022-02-24T21:27:52Z")

</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:
- [PDF.js Express Plus Overview - Select an integration or framework to get started - Frameworks](https://pdfjs.express/documentation/get-started#frameworks)
- [Manually Download & integrate PDF.js Express Plus - Run samples](https://pdfjs.express/documentation/get-started/manually#run-samples)
- [Signatures with PDF.js Express - Get started](https://pdfjs.express/documentation/signature/overview#get-started)

APIs:
- [Core.Annotations.Forms.Field - new Field(name [, options])](https://pdfjs.express/api/Core.Annotations.Forms.Field.html#Field__anchor)
- [PDF.js Express Utilities](https://pdfjs.express/api/utils/index.html#__anchor)
- [UI - setSignatureFonts(fonts)](https://pdfjs.express/api/UI.html#.setSignatureFonts__anchor)

Forums:
- [Is there an event for when signatures get placed onto a PDF?](https://pdfjs.community/t/is-there-an-event-for-when-signatures-get-placed-onto-a-pdf/1080/1)
- [Is there a limit to the number of documents I can send to be signed by my customers per month?](https://pdfjs.community/t/is-there-a-limit-to-the-number-of-documents-i-can-send-to-be-signed-by-my-customers-per-month/1281/1)
- [Revoke the possibility to change the signature placeholder location by the end user](https://pdfjs.community/t/revoke-the-possibility-to-change-the-signature-placeholder-location-by-the-end-user/1280/1)

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