> For the complete documentation index, see [llms.txt](https://docs.sign-web.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sign-web.app/developers.md).

# DEVELOPERS

- [Technical details](https://docs.sign-web.app/developers/technical-details.md)
- [File Certification](https://docs.sign-web.app/developers/technical-details/file-certification.md): This is how you Certify your files or data on the SIGN Smart Contract
- [Revoke certification](https://docs.sign-web.app/developers/technical-details/revoke-certification.md): In some cases, it make sens to have to possibility to revoke a certification.
- [Email Certification](https://docs.sign-web.app/developers/technical-details/email-certification.md): This is how you can Certify your sent emails on the SIGN Smart Contract
- [Multiparty Agreement](https://docs.sign-web.app/developers/technical-details/multiparty-agreement.md): This is how you can Create and Certify your Multiparty Agreement on the SIGN Smart Contract
- [USDN & Certification Credits](https://docs.sign-web.app/developers/technical-details/usdn-and-certification-credits.md): This is the main method to convert USDN tokens into SIGN Certification Credits on the basis of 0.5 USDN = 1 Certification Credit.
- [SIGN API](https://docs.sign-web.app/developers/sign-api.md)
- [3rd Party Integration](https://docs.sign-web.app/developers/3rd-party-integration.md): You can easily integrate the File Certification feature into any web application or web site with our Javascript library.
- [Certify](https://docs.sign-web.app/developers/3rd-party-integration/certify.md): Implementation of the certification process into your admin workf
- [Verify](https://docs.sign-web.app/developers/3rd-party-integration/verify.md): Implementation of a verification page on your website