# Can i custom signatureModal in sigature field

**URL:** <https://pdfjs.community/t/can-i-custom-signaturemodal-in-sigature-field/834>\
**Category:** Technical Support\
**Created:** [June 21, 2021, 2:44pm UTC](https://pdfjs.community/t/can-i-custom-signaturemodal-in-sigature-field/834 "2021-06-21T14:44:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dang.pt](https://avatars.discourse-cdn.com/v4/letter/d/5daacb/32.png) [@dang.pt](https://pdfjs.community/u/dang.pt)\
**Post date:** [June 21, 2021, 2:44pm UTC](https://pdfjs.community/t/can-i-custom-signaturemodal-in-sigature-field/834/1 "2021-06-21T14:44:13Z")

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![1](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/8134682fb9c555297e6149fe7ed2c6b4ab806573.png)

I want custom signatureModal when user click on signature field, i want to show my popup signatureModal, not pdfjs express.

Thanks.

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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:** [June 25, 2021, 3:43pm UTC](https://pdfjs.community/t/can-i-custom-signaturemodal-in-sigature-field/834/2 "2021-06-25T15:43:05Z")

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Hi there,

Sorry for the delay here.

We currently do not have a good way of doing this. The signature modal and signature flow in PDFs is quite complex and this is a difficult use case to accomodate.

That being said, our UI is open sources meaning you can fork the code and make any customizations you wish. See [this guide](https://pdfjs.express/documentation/ui-customization/advanced-customization) for more info.

Thanks!  
Logan