Your files deserve an expert. Voltn.

Whatever your file-related needs, Voltn has you covered. Simply and expertly.

Over 300,000 users and 2,000 clients protect their data with Voltn
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Work with peace of mind

Your data is protected by our advanced security protocols.

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Collaborate smoothly

Platform management optimized for greater productivity.

Act with confidence

Whether sending or receiving, your privacy settings are customized to your daily requirements.

Otherwise, you could keep all your documents on a floppy disk.

Two solutions tailored to all your use cases

Store, share, co-edit, sign, and track: Voltn covers everything your company does with its files. Two solutions to meet your needs: Voltn Share for your external exchanges, and Voltn Workspace to bring all your files together and work on them.

External file sharing

Send files with no size or format limits

Customized sharing portals branded to your company

Full traceability of downloads and views

Access protected by password, expiration date, and permissions

Send, receive, and collect files with external parties, with no size or format limits. Voltn Share integrates with your existing tools and makes every exchange traceable and secure.

The enterprise file platform

Real-time document co-editing and approval

Granular permission management by team, project, or folder

Version history and change tracking

Activity notifications to stay informed

Bring all your company's files together in one place: store, co-edit, sign, approve, track, and find them. Voltn Workspace prevents files from being scattered across emails, messaging apps, and servers by providing a single, controlled platform.

Behind Voltn are reachable experts. Not a call center.

Have a question, a deployment project, or a specific need? Our experts are here to help before, during, and after.

Speak to an expert
Man in office holding a large stack of file folders, hiding part of his face behind them.

A secure and certified cloud, hosted in Europe

Voltn meets the most demanding certifications on the market. Your files are hosted and managed in France and Luxembourg on infrastructure we control from end to end.

Learn more

100% European hosting

Voltn manages its own servers, hosted in France and Luxembourg in data centers compliant with Tier 3+ and Tier 4 standards. Your data never leaves European territory and remains out of reach of the Cloud Act.

Advanced file protection

Every file is scanned and encrypted in real time. Integrated antivirus and ransomware detection protect your data at every step.

Certifications & compliance

Certification ISO 9001
Certification ISO 27001
Certification HDS, Hébergeur de Données de Santé
Label Numérique Responsable niveau 1
Conformité au règlement européen DORA
Conformité à la directive européenne NIS 2
Conformité au règlement européen eIDAS 2.0

The numbers don't lie

15+ years

of expertise

300,000

daily users

2,000

organizations

500M

files stored

Connect Voltn to all your tools

96% of our clients recommend us

Philippe LECOCQ

Chief Information Officer at Louis De Waele

“In construction, we exchange a great many documents with partners and subcontractors. We chose Voltn for its simplicity, its user-friendly interface and its responsive support. The platform is fast, flexible, easy to use, and accessible on smartphones and tablets.”

Dominique Tessaro

Chief Information Officer at Vinci Energies

“We were looking for a document sharing solution that met our security and confidentiality requirements, accessible on the move and user-friendly enough to avoid shadow IT. Hosted in France and ISO 27001 certified, Voltn was chosen to meet these criteria, notably with secure SAML authentication.”

Thérèse Vally

Safety Adviser at Carbonne Conseil & Formation

“We are very happy with the Voltn solution. It lets us securely back up our data, our administrative documents, the safety adviser deliverables we produce for our clients and all of our training materials. Voltn is our internal communication network. It is an effective and secure collaboration tool.”

Frédéric Lamagdelaine

IT Project Manager at Samu Social de Paris

“With Voltn we share and collaborate easily, in a fully secure, HDS-compliant environment, adapting the access rights, confidentiality and audit trail requirements of each of our assignments to their specific needs.”

Laurence Lahousse

Administrative Manager, Cabinet ALCYON

“The French institute of chartered accountants recommended no longer using email to transfer sensitive data, because email systems are not always secure. Thanks to Voltn's secure sharing link, we were able to stop doing so and comply with that recommendation.”

Guillaume Gérard

IT Manager at AMISEP

“We were looking for a secure solution, hosted in France, that met GDPR requirements. Voltn stood out for its simplicity and its HDS certification. Since then we have had a reliable platform, accessible without a VPN, which has greatly simplified our document management.”

Use cases

Solutions for every sector

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News, trends, and best practices

The Voltn blog provides insights into the challenges of cybersecurity, sovereign cloud, and online collaboration.

Cybersecurity
Published on
21.09.2026

Ransomware and human error: the technical and organisational levers that build resilience and let you react quickly after an incident.

2
min
Read article
Cloud
Published on
21.09.2026

Access to records, telemedicine, research and costs: what the cloud brings healthcare organisations, and how to pick an HDS-certified host.

5
min
Read article
File sharing
Published on
21.09.2026

Microsoft retires SPO OTP on 31 August 2026: the switch to Entra B2B, the impact on your sharing links and a checklist to work through.

6
min
Read article
You could keep all your documents on a floppy disk.
Vintage office chair with a pile of folders and a beige corded telephone, handset off the hook on red carpet.

But I must admit that entrusting your files to an expert is still simpler.