One click.
Legally signed.

Thanks to the sproof API, seamless integration via widget into your own web solution is guaranteed. Insert eIDAS-compliant digital PDF signatures into your systems.

sproof widget with API for digital signatures

Your software with white-label integration
for eIDAS-compliant e-signatures

sproof widget and API integration

Offer legally compliant, eIDAS-compliant electronic signatures via sproof widget and API directly in your software – fully integrated, individually branded and 100% GDPR compliant.

Make an appointment with an expert

1) E-signature button:
New feature in your web application
Embed the e-signature for your users as a widget in your applications.
2) Legally valid PDF signature issued by sproof
Signatures are applied to the contracts via API interfaces.
3) Success message: Signed documents are synchronized with your web solution
The documents are available to your user base in signed form.

Seamlessly integrate electronic signatures into your software or application using API

sproof widget integration and API

sproof's Signing Widget enables the direct integration of eIDAS-compliant electronic signatures (AES, QES) into any application and website. Unlike traditional signing workflows, where signers receive an invitation to sign via separate channels such as email or SMS, the Signing Widget keeps users in the existing environment.

The API allows the signing process to be seamlessly integrated into a system, with the user interface being customizable to enable customized user journeys. The Signing Widget is particularly suitable for web applications that regularly generate contracts or other documents that have to be signed by the users themselves.

Download Sproof Widget One Pager

Digitale Signaturen mit API automatisieren. Die Signatur für Entwickler:innen

Request API tokens now
and try it for free

sproof API for developers

Embed signature as a widget: Integrate the all-in-one eSignature solution as a button, widget or directly into your DMS and enable secure, legally compliant signing without media discontinuity.
In Corporate Branding: Users sign in familiar branding without leaving their familiar surroundings.
International & legally valid: eIDAS-compliant, advanced and qualified e-signatures directly integrated via API.

Made in Europe for Europe

Server location Europe - 100% GDPR compliant - ISO 27001

Important contracts and sensitive signatures remain in Europe to ensure data sovereignty and compliance with strict data protection regulations. sproof guarantees the highest compliance standards and 100% GDPR conformity, as all services are provided exclusively with server location in Europe. sproof is ISO 27001 certified.

Learn more about compliance at sproof