sproof sign is a digital signature tool that allows to sign documents online. sproof sign makes the collection of digital signatures fast and easy. sproof sign is free to use and offers additional premium plans for small, medium and large companies. With sproof sign you can digitize your signature workflows within minutes and without setting up IT projects. sproof sign is a cloud-based software for signing document electronically and for collecting signatures from others. Digital signatures created with sproof sign are legally-binding and GDPR-compliant. sproof sign is hosted in the EU and supports advanced and qualified digital signatures according to the eIDAS regulation. All premium plans include unlimited qualified digital signatures and unlimited advanced digital signatures. You can sign DOCX and PDF documents online and for free in the basic version. You can upgrade to sproof sign premium at any time with flexible monthly and yearly plans. Premium customers also benefit from automation with an API, the integration of SSO providers, unlimited storage of documents batch signing.