WeTransfer Alternatives That Will Never Train AI on Your Files

In July 2025, WeTransfer quietly updated their terms of service. The new language gave WeTransfer rights to use uploaded files — your files, your clients' files, confidential documents, creative work — to train AI models.

The backlash was immediate and loud. WeTransfer reversed the policy within days, issuing a statement that the terms had been "misunderstood" and that they had "no intention" of training on user content.

Here's the problem: a company that tried this once has demonstrated the willingness to try it. Terms of service can change again. "We reversed it under pressure" is not the same as "the architecture makes it impossible."

If you're sharing files with a meaningful expectation of privacy — legal documents, medical records, financial data, unreleased creative work, client deliverables under NDA — you need a platform where the guarantee isn't a policy. You need one where it's the technology.

Why "We Won't Do It" Is Not Enough

WeTransfer's reversal was a PR response, not a technical one. The files still pass through WeTransfer's servers. WeTransfer still holds the decryption keys. WeTransfer can still technically read every file you upload.

The only guarantee that holds against:

• A future policy change
• A data breach exposing your files
• A legal compulsion to hand over file contents
• An employee with database access acting in bad faith

...is zero-knowledge encryption. This means your files are encrypted before they leave your device, with a key that never touches the service's servers. The service physically cannot read your files. Not now, not under pressure, not ever.

That's an architectural guarantee. A terms-of-service paragraph is not.

The 4 Best WeTransfer Alternatives

1. TinyX — Best Overall (Zero-Knowledge Encryption, Built In)

tinyx.co | Free | Pro: $9/mo | Max: $29/mo

TinyX is the only general-purpose file sharing platform on this list that is zero-knowledge by default — not as a premium add-on, not requiring configuration.

How TinyX encryption works:

When you upload a file to TinyX, it is encrypted in your browser using AES-256-GCM before any data leaves your device. The encryption key is derived client-side and embedded in the share link's URL fragment (the # portion). URL fragments are never sent to web servers — they exist only in the browser.

The result: TinyX's servers receive only encrypted ciphertext. The key is in the link. Only the recipient with the link can decrypt. TinyX cannot read your files. Not today, not if they get hacked, not if a government presents them with a warrant for file contents. The architecture enforces privacy that no policy statement can.

What else TinyX offers beyond file sharing:

• Short links with real-time analytics (country, device, referrer)
• QR code for every link — file link or short link
• Upload drops: let anyone send files to you via a link, no account required
• Password protection and link expiry (time-based or click-based)
• Forms and questionnaires via link
• Webhooks to Slack, Discord, or any endpoint
• White-label platform for agencies and resellers
• REST API v2

For teams who also do link shortening, client communication, or document collection — TinyX replaces WeTransfer and several other tools at the same time.

What TinyX doesn't have:

• Very large file transfers (Max plan tops at 500MB per file — WeTransfer free goes to 2GB)
• Collaborative document editing
• Native desktop sync client

Verdict: the strongest privacy architecture of any option here, with the most features beyond file transfer. The right replacement for most individuals and small business teams.

2. Tresorit — Best for Regulated Industries

tresorit.com | Pro: ~$15/user/mo

Tresorit is a Swiss-based, end-to-end encrypted cloud storage and file sharing platform. Like TinyX, it uses zero-knowledge encryption — Tresorit cannot access your files. Unlike TinyX, it's built as a full cloud storage replacement (think Dropbox with actual privacy).

Tresorit has invested heavily in compliance documentation: SOC 2 Type II, GDPR compliance, and documented HIPAA suitability. For legal firms, healthcare organisations, and financial services teams who need to check compliance boxes — Tresorit has the paperwork.

Strengths:

• True zero-knowledge end-to-end encryption
• Compliance documentation for regulated industries
• File sync and collaboration (like Dropbox, but private)
• Strong audit trails

Weaknesses:

• Expensive: business plans run $15–$25/user/month with minimum seats
• No URL shortening, no analytics on link opens, no forms
• The "share a file with someone outside the company" flow is more complex than WeTransfer's simplicity
• No upload drops (collecting files from others)

Verdict: the right choice for regulated-industry teams replacing both cloud storage and secure file sharing. Overkill and overpriced for most casual users leaving WeTransfer.

3. Internxt — Best Budget Zero-Knowledge Cloud Storage

internxt.com | Free | Pro: ~$5/mo

Internxt is a Spain-based open-source zero-knowledge cloud storage platform that has grown significantly in recent years. Like Tresorit, it's primarily a cloud storage product — folders, sync, versioning — with file sharing as a feature.

The differentiator is price: Internxt's paid plans are significantly cheaper than Tresorit, and the free plan offers 10GB of storage. The client apps are available on all major platforms.

Strengths:

• Zero-knowledge encryption (open-source, auditable)
• Very competitive pricing
• Solid mobile and desktop apps
• Simple share link generation

Weaknesses:

• The file sharing UX is functional but less polished than WeTransfer
• No link analytics, no expiry controls on basic plans, no forms
• Smaller company — longevity is a reasonable question to ask
• No upload drops

Verdict: a credible privacy-first cloud storage option at a fair price. Not a direct WeTransfer replacement in terms of simplicity, but solid if you're already evaluating zero-knowledge storage.

4. ProtonDrive — Best if You're Already in the Proton Ecosystem

proton.me/drive | Free | Plus: ~$4/mo (bundled)

ProtonDrive is the file storage component of Proton's privacy suite (the same company behind ProtonMail and ProtonVPN). It uses end-to-end encryption — Proton cannot read your stored files. Share links can be generated from any file or folder.

The appeal is the ecosystem: if you already use ProtonMail for email, ProtonVPN for network privacy, and Proton Calendar, adding ProtonDrive is a natural extension. The Proton bundle plan makes pricing reasonable relative to getting equivalent privacy elsewhere.

Strengths:

• Zero-knowledge encryption, trusted company with strong privacy track record
• Good mobile apps, improving desktop sync
• Part of a wider privacy-first ecosystem
• Simple share link generation

Weaknesses:

• No link analytics, no password protection on share links (basic tier), no expiry
• No upload drops, no forms, no URL shortening
• File sharing UX is secondary to storage — WeTransfer's simplicity for one-off transfers is genuinely better
• Free storage limited to 1GB on drive specifically

Verdict: excellent for Proton users extending their existing privacy stack. Not the obvious WeTransfer replacement for standalone file transfers.

Direct Comparison

The WeTransfer Forced Expiry Problem

One thing worth noting about WeTransfer's free tier beyond the AI training incident: files expire in 7 days. Not optionally — mandatorily. Share a file today, it's gone next week whether the recipient has downloaded it or not.

TinyX free has no forced expiry. You can set expiry if you want it — time-based or click-based. Or you can leave the link open indefinitely.

Frequently Asked Questions

Did WeTransfer actually train AI on user files? WeTransfer updated their terms of service in July 2025 to include language permitting use of uploaded content for AI training purposes. After significant public backlash and press coverage, they reversed the change within days and issued a statement clarifying their intentions. However, the technical capability for WeTransfer to access file content remained — their platform is not zero-knowledge.

What does "zero-knowledge" actually mean? Zero-knowledge encryption means the service provider cannot read your files, because they never receive the decryption key. Your files are encrypted on your device before upload, and the key stays in the sharing link (or with you). It's not just a policy — it's a technical architecture. A zero-knowledge provider cannot hand your file contents to anyone, because they cannot decrypt them.

Is TinyX's encryption actually verifiable? TinyX uses AES-256-GCM with client-side key generation. The encryption happens in JavaScript in your browser before upload. You can verify this by opening browser dev tools before uploading — the encrypted payload is visible in network requests, and the key never appears in any outbound request to TinyX's servers.

What if I need to share files larger than 500MB? TinyX Max ($29/mo) handles files up to 500MB. For genuinely large files (video production, large datasets), Tresorit or Internxt are better fits with higher file size ceilings. WeTransfer's Pro plan still allows up to 200GB transfers — if sheer volume is the priority, that remains competitive.

Can I use TinyX to replace WeTransfer for client file delivery? Yes. TinyX handles both sending (share a link to a file you uploaded) and receiving (create an upload drop link, send it to your client, they upload files directly to you). No accounts required on either side for basic use.

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Bottom Line

WeTransfer reversed their AI training policy under pressure. That's better than not reversing it. But it's not a reason to trust them with sensitive files going forward.

The alternatives above are zero-knowledge by architecture — the AI training question is simply moot. TinyX leads the list because it combines genuine zero-knowledge encryption with the full feature set missing from WeTransfer: real-time analytics, upload drops, expiry controls, password protection, URL shortening, and forms.

Try TinyX free at tinyx.co — your files are encrypted before they leave your device. We cannot read them. See all plans at tinyx.co/pricing.