> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.invoice123.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to Add Signatures to Documents?

Signatures on invoices are important as they confirm receipt of goods or services and the completion of a transaction. They ensure the accuracy and validity of accounting and can serve as evidence in legal disputes, providing credibility to the document and ensuring a smooth business process.

### How to add a signature?
1. Open the **Integrations** list
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/integrations_1r6j562.png)
| You can find modules in two ways: through the Account Management dashboard by selecting the **PUZZLE ICON** or in account settings by clicking on **Integrations**

2. In the list of integrations, locate the **Signing documents** integration and install it
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/screenshot-2024-06-11-at-15161_1iu59x2.png)
3. Enable the client's signature and add your signature
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/screenshot-2024-06-11-at-15164_u8k2r9.png)
4. Save changes
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/screenshot-2024-06-11-at-15170_dztzy9.png)
5. Your signature will appear on the invoice's PDF file, in the designated field for the issued invoice
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/image_1ssvu2k.png)
6. The client will be able to add their signature during invoice issuance, in the **Client Signature** section
![](https://storage.crisp.chat/users/helpdesk/website/a9835b72ea0f8000/screenshot-2024-06-11-at-15174_yby7di.png)