WeTransfer vs PrivateNote: Which Is Better for Secure File Sharing?

WeTransfer and PrivateNote both deliver files through links. The practical difference is the workflow you need: large-file delivery, or an encrypted handoff of confidential information with configurable access controls.

For standard transfers, WeTransfer encrypts files in transit and at rest and manages the encryption keys. PrivateNote encrypts attachments before upload and decrypts them in the recipient’s browser. WeTransfer also documents a separate Enterprise end-to-end encryption option, available on request to selected customers.

This comparison covers standard WeTransfer transfers unless otherwise stated. It is published by PrivateNote, one of the services being compared. Product documentation was checked on October 9, 2026.

A quick comparison

• Encryption: standard WeTransfer transfers use provider-managed encryption; PrivateNote uses client-side encryption. WeTransfer Enterprise has a separate end-to-end encryption option.
• File size: WeTransfer targets large-file delivery. PrivateNote currently allows up to 1 GB per file and per transfer on Business.
• Recipients: neither service requires a recipient account for ordinary link-based delivery.
• Access: both provide expiration and password-protection options; availability and additional controls depend on the plan.
• PrivateNote sender accounts: attaching files requires an account. Higher limits, recipient verification, and unopened-note revocation require paid plans.

The key question is who needs access to the decryption keys—not simply whether a service advertises encryption.

Encryption: who holds the keys?

Standard WeTransfer transfers

WeTransfer documents TLS 1.2 or 1.3 for transmission and AES-256 for stored files. These protect traffic and stored data, but standard transfers use keys managed by WeTransfer. Its current documentation also describes limited circumstances in which it may review transfer contents, including consented research and investigations. WeTransfer’s file-protection documentation

Technical access is not evidence that employees routinely inspect files. It means confidentiality also depends on the provider’s access controls and operating policies.

WeTransfer Enterprise end-to-end encryption

WeTransfer documents an Enterprise add-on enabled on request for selected customers. In that mode, the sender’s browser encrypts files before upload, and the sender shares a separate key with the recipient. WeTransfer does not receive that key.

The feature has workflow restrictions, including link-only transfers and no server-side previews or malware scanning of encrypted contents. It is therefore inaccurate to claim that WeTransfer never offers end-to-end encryption. WeTransfer Enterprise encryption documentation

PrivateNote’s file encryption

PrivateNote encrypts attachments on the sender’s device using libsodium’s secretstream construction with XChaCha20-Poly1305. Notes use AES-256-GCM. The recipient’s browser decrypts the encrypted content; the normal delivery workflow does not give the server the decryption keys.

This reduces the storage provider’s ability to read the contents. It does not eliminate trust in the browser application or the devices at either end. The security documentation explains the architecture in more detail.

Why the sharing link is sensitive

PrivateNote carries decryption information in the URL fragment: the portion after #. Browsers omit fragments from ordinary HTTP requests, allowing the server to retrieve encrypted data without receiving that information in the request URL.

The complete link still needs protection. An unintended recipient who obtains it may have the information needed to decrypt the content, subject to any additional access checks. Password protection and recipient verification can add separate requirements.

The fragment is not a defense against compromised application code or malicious browser extensions. Client-side software can read it. Browser encryption protects the handoff when the application and endpoints operate as intended.

The 2025 AI controversy, accurately described

In July 2025, WeTransfer faced criticism over terms referring to improving machine-learning models for content moderation. The company removed the disputed wording and said the contemplated capability had not been implemented. The controversy concerned contractual language; it was not evidence that customer files had actually been used to train AI.

WeTransfer’s published position is that customer content is not used to train AI models. Its commitments should be acknowledged when comparing the services. WeTransfer’s July 2025 clarification · Principles of Content Protection

The useful lesson is the distinction between policy and architecture. When a provider holds the keys, its policies help govern how readable content is handled. Client-side encryption adds a technical barrier by keeping stored content unreadable without the keys. Neither model removes every security risk.

File size and workflow

WeTransfer is oriented toward large-file delivery. If you regularly send multi-gigabyte video projects, check its current plan limits and delivery features against your requirements. WeTransfer pricing

PrivateNote’s limits are smaller and suited to confidential documents and moderately sized attachments:

• Free: 25 MB per file and per transfer, with 10 file transfers per month.
• Starter: 250 MB per file and per transfer, with 50 file transfers per month.
• Business: 1 GB per file and per transfer, with unlimited file transfers.

A 20 GB project does not fit within PrivateNote’s current transfer limits. For a sensitive PDF, the encryption and recipient controls may matter more than maximum capacity. PrivateNote plans

Who can open the file?

A link can be forwarded or pasted into the wrong conversation. Decide whether possession of the link should be enough to authorize access.

WeTransfer offers password protection, expiration, and transfer-management features, with availability depending on the plan. These are useful access controls, but a transfer password is not automatically equivalent to encrypting content before upload.

PrivateNote combines client-side encryption with additional access options:

• Link access: the complete link authorizes access while the applicable limits permit it.
• Password protection: the recipient needs a password as well as the link.
• Recipient email verification: supported paid plans can require a code sent to a designated inbox.
• Combined protection: a password and recipient verification can be used together.

Email verification demonstrates control of an inbox, rather than proving legal identity. Send passwords through a different channel from the link when possible.

Expiration, opening limits, and revocation

PrivateNote supports expiration and plan-dependent opening limits. These restrict future access through the note link. Attachments have a file-access window so a recipient can retrieve them after opening the note; an opening limit should not be described as an exact count of file downloads.

Starter and Business support revocation of unopened notes. This is narrower than a promise to revoke any file at any time after sharing.

WeTransfer also offers expiration and transfer-management controls. The difference is how these controls fit into each service’s workflow, not that one service has expiration and the other does not.

Neither service can erase a file that the recipient has already downloaded. A recipient may also take screenshots or otherwise retain information. Encryption protects contents during the handoff; expiration and revocation restrict later access to the hosted copy.

Which service fits your use case?

Large creative projects

For substantial video projects and media collections, WeTransfer’s focus on large-file delivery may be the more practical fit. If you also require end-to-end encryption, investigate its Enterprise option or encrypt the files before using a transfer service.

Confidential documents

For financial records, contracts, and sensitive personal documents within its size limits, PrivateNote combines encryption before upload with optional recipient checks and restricted access windows.

Passwords and API keys

For a short secret, an encrypted text note is often more convenient than creating a file. PrivateNote supports text notes as well as attachments. Its account requirements differ between those two workflows.

You do not need one service for every situation. Match the encryption architecture, transfer capacity, and recipient experience to the information you are sending.

How to send a file with PrivateNote

1. Sign in and attach your files

Open Secure File Transfer, sign in, and choose your attachments. File sending requires an account; the recipient does not need one.

2. Set the access rules

Choose expiration and available opening settings. Add password protection or, on a supported plan, recipient email verification. Review the file limits before creating the transfer.

3. Create and share the link

PrivateNote encrypts files locally before uploading them. Share the resulting link only with your intended recipient and communicate any password separately.

4. Let the recipient decrypt locally

The recipient completes the required checks and opens the content in their browser. The configured expiration, opening limits, and attachment access window control future retrieval. If necessary, a supported paid plan lets you revoke the note before it is opened.

Frequently asked questions

Is WeTransfer end-to-end encrypted?

Standard transfers use encryption in transit and at rest with provider-managed keys. WeTransfer separately documents an Enterprise end-to-end encryption add-on for selected customers. Check which mode your workspace actually uses.

Does WeTransfer train AI on uploaded files?

WeTransfer says it does not. Its July 2025 terms controversy should not be presented as evidence that such training occurred.

Is PrivateNote safer than WeTransfer?

PrivateNote’s client-side encryption provides a different confidentiality boundary from standard provider-managed encryption. Overall security also depends on correct implementation, endpoint integrity, how you protect the link, and recipient behavior. A blanket safety ranking would hide those distinctions.

Can I send files without an account?

PrivateNote requires a sender account for file attachments. Recipients do not need to register. Basic text-note sharing has different requirements.

Can I revoke a file after sharing it?

PrivateNote’s paid plans support revocation before the note is opened. Expiration and access limits also restrict future retrieval. None of these controls deletes a copy already saved by a recipient.

Choose for the information you are sharing

Choose a large-file delivery workflow when capacity and convenience are the main requirements. Choose client-side encrypted sharing when the provider should not need access to the plaintext, and add recipient controls where link possession alone is insufficient.

Send an encrypted file with PrivateNote. If you are comparing a wider range of services, read our WeTransfer alternatives guide.