# DocumentViewer Feature: Uploading Signature Images

> A very popular feature of the DocumentViewer is the possibility to request signatures from multiple users for a document. A new feature allows users to upload and adjust prepared signature images.

- **Author:** Bjoern Meyer
- **Published:** 2020-08-17
- **Modified:** 2026-07-17
- **Description:** A very popular feature of the DocumentViewer is the possibility to request signatures from multiple users for a document. A new feature allows users to upload and adjust prepared signature images.
- **2 min read** (292 words)
- **Tags:**
  - Angular
  - ASP.NET
  - Document Signing
  - Image Processing
  - Signature
- **Web URL:** https://www.textcontrol.com/blog/2020/08/17/new-documentviewer-features-uploading-signature-images/
- **LLMs URL:** https://www.textcontrol.com/blog/2020/08/17/new-documentviewer-features-uploading-signature-images/llms.txt
- **LLMs-Full URL:** https://www.textcontrol.com/blog/2020/08/17/new-documentviewer-features-uploading-signature-images/llms-full.txt

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A very popular feature of the DocumentViewer available for ASP.NET and Angular is the possibility to request signatures from multiple users for a document.

### Drawing Signatures

The usual way to add the signature is to draw the signature using the mouse or touch on the signature soft pad shown in the screen video below:

![Signing Documents with TX Text Control](https://s1-www.textcontrol.com/assets/dist/blog/2020/08/17/a/assets/sign1.webp "Signing Documents with TX Text Control")

### Uploading Signatures

A new way to add the signature is to upload a prepared signature image from typical image formats such as JPG or PNG. Simply upload an image file and use the *auto adjust* feature to add contrast and to remove the background automatically:

![Signing Documents with TX Text Control](https://s1-www.textcontrol.com/assets/dist/blog/2020/08/17/a/assets/sign1.webp "Signing Documents with TX Text Control")

For more complex and distorted images such as scans or bad quality images, you can adjust the image manually by removing key colors and adding contrast settings:

![Signing Documents with TX Text Control](https://s1-www.textcontrol.com/assets/dist/blog/2020/08/17/a/assets/sign1.webp "Signing Documents with TX Text Control")

In the mobile view, you can take pictures directly from your mobile phone and upload the signature representation:

![Signing documents with TX Text Control](https://s1-www.textcontrol.com/assets/dist/blog/2020/08/17/a/assets/mobile.webp "Signing documents with TX Text Control")

This feature is available in the latest version of the DocumentViewer available for [ASP.NET](https://docs.textcontrol.com/textcontrol/asp-dotnet/article.aspnet.mvcviewer.htm) and [ASP.NET Core](https://docs.textcontrol.com/textcontrol/asp-dotnet/article.aspnet.mvcviewercore.htm) and [Angular](https://docs.textcontrol.com/textcontrol/asp-dotnet/article.client.angular-viewer.htm).

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## About Bjoern Meyer

As CEO, Bjoern is the visionary behind our strategic direction and business development, bridging the gap between our customers and engineering teams. His deep passion for coding and web technologies drives the creation of innovative products. If you're at a tech conference, be sure to stop by our booth - you'll most likely meet Bjoern in person. With an advanced graduate degree (Dipl. Inf.) in Computer Science, specializing in AI, from the University of Bremen, Bjoern brings significant expertise to his role. In his spare time, Bjoern enjoys running, paragliding, mountain biking, and playing the piano.

- [LinkedIn](https://www.linkedin.com/in/bjoernmeyer/)
- [X](https://x.com/txbjoern)
- [GitHub](https://github.com/bjoerntx)

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## Related Posts

- [New DocumentViewer Signature Tutorial Sample](https://www.textcontrol.com/blog/2020/08/18/new-documentviewer-signature-tutorial-sample/llms.txt)
- [Signing Documents with the Angular DocumentViewer](https://www.textcontrol.com/blog/2020/08/11/signing-documents-with-the-angular-documentviewer/llms.txt)