Contracts, invoices, consents and agreements signed by your customers in the simplest and most legal way.

Paperless - Sign without paper


Companies that trust us


How does it work?

1. Prepare your documents

Upload your documents in PDF, docx, odt format and and add fields to start the signing process

2. Submit the request

Add recipients and submit a request via email or SMS. You will receive a notification after submitting your request

3. Simple management

Tracking the overall signing process. Management and custody of the documents in the cloud.

Digital signature using a smartphone with Viafirma

Quickly fill your fields

Smart forms

  • Improve your user experience
  • Get your forms filled out faster than ever
  • Avoid data entry errors errors when the user fills in the form with field and condition validation

Prevents litigation caused by not reading the clauses

Mandatory reading clauses

Legal Guarantee

Peace of mind for you and your customers.
Complying with GDPR regulations

¿Why is it important?

Most people do not read all the contracts or do not understand some clauses. With this solution we are forcing the client to read them, as well as helping him to better understand the most important ones.

VIAFIRMA DOCUMENTS is the most comprehensive solution on the market


Remote Signature

Mail or sms the documents to be signed. The signatory will be able to sign them anywhere

Face-to-face Signature

Sign documents face-to-face via tablet or smartphone

Sign using a Digital Certificate

Sign or send signature requests to your clients so that they can sign with a digital certificate

Design your brand

Customize your app, email and logo using your own brand

Template editing

Create templates to accelerate the sending of recurring signatures: Monthly contracts, payrolls...

Identification and Authentication OTP/SMS

Sign your documents via SMS One-Time-Password

Customized Forms

Collects the signatory's data from a form and adds the information to the document

Audit Trail

The entire signature process is audited considering all digitally collected events.

Advanced signature flows

It involves all participants in the signing process of a document and sets the order of each signatory


It integrates the most comprehensive solution on the market in your favourite apps.

100% Cloud

Manages your digital signatures through our Cloud tool


The digital signature can be easily integrated into your Android and iOS apps.

Legal Regulation and auditing

Your documents signed and validated complying with the most demanding regulations in the world: EIDAS Regulation - (EU) N 910/2014


Our solutions offer full validity, complying with the most demanding regulations in the world: EIDAS Regulation - (EU) N 910/2014 (EU).


Documents signed by Viafirma Documents contain an audit trail that include all data, events, and evidence collected during the signing process.

EAD Trust, European Agency of Digital Trust, S.L CERTIFIES that, regarding the digitized signature management, Viafirma Documents meet the criteria established by this entity for the managed signatures to be considered as ''Advanced Digitized Handwritten Signature''

the digital signature suitable for any need

Easy Integration


Easy integration through our API REST


Access to our sandbox for free

Sign Documents

Integrate CRM, ERP and Salesforce with your tool



Viafirma Documents is a digital signature software that allows you to electronically sign documents practically on any device (in PDF, DOCX, ODT format) from almost anywhere in the world.

Technically, digital signature means the cryptographic signature procedure that meets the following characteristics:

  • Authentication: That is, whoever signed can be recognized.
  • Non-repudiation: the signatory cannot deny that he has digitally signed the document.
  • Integrity: it is verified that the document has not been altered after being signed.

You may cancel your subscription at any point.

If you unsubscribe you will not lose your content, you simply cannot sign anymore.

You can use different types of legally binding online signatures around the globe. Choose the one that suits you best:

  • Biometric Signature
  • OTP SMS/ OTP mail
  • Using a digital certificate

If you want to sign using your cloud centralized certificate, please check our solution Viafirma Fortres

Yes. It allows to create a PDF from pre-designed templates that can be done in two ways: via Microsoft Word and Adobe Acrobat with AcroForm input fields

Yes, Viafirma Documents allows integration with third-party software. It has API REST to simplify the integration of third party applications as well as to manage users, devices, messages, notifications, etc.

Documents can be stored within the tool or in your document management system.

Viafirma Documents allows you to customize the final stages of the lifecycle of a document by implementing different mechanisms for transferring and/or copying the generated and signed documents.

Mechanisms that are currently supported: NFS, FTP, CMiS (Content Management Interoperability Services) and, in general, any repository that exposes its REST services.

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