Send files
- Files stay on your phoneFiles stay on your device
- Encrypted end to end
- No file size limit
No upload, no account, no size cap. End-to-end encrypted, and never stored on our servers.
No upload, no account, no size cap. End-to-end encrypted, and never stored on our servers.
Most file transfer services make you upload first, store your files on their servers, and let the other person download them later. WispFile skips all of that. Your browser and theirs connect directly, and the files travel between you, encrypted, while you are both online.
Drop in files or a whole folder, any size. Nothing is uploaded: they stay on your device.
Copy it, show it as a QR code or email it. The key that unlocks the files is part of the link and never reaches our servers.
Their browser connects to yours and the files stream across, encrypted, and are saved as they arrive. Keep the tab open until they finish.
There is no upload step and no copy on a server waiting to expire. Once the transfer ends, the only copies are yours and theirs.
Every piece is encrypted with AES-GCM under a 256-bit key made in your browser. The key lives after the # in the link, the part browsers never send to a server.
Files stream to the receiver’s disk instead of filling memory. No limit is set; 5 GB transfers are verified end to end so far. Neither side needs an account.
Each 256 KB piece carries a fingerprint that is checked before a byte is written. A damaged piece is fetched again, and a dropped connection resumes where it stopped.
Send one link to a whole team. With swarm mode, receivers pass the files on to each other: in our test, 10 receivers needed 40 MB of upload from the sender instead of 200 MB.
Make an inbox and share its link. Clients and colleagues send files straight to your browser, into a folder you choose.
Upload services are the right choice when the other person will download days later, after you have gone offline. When they are ready now, or the files are too big or too private to park on someone’s server, a direct transfer is faster and keeps no copy.
| WispFile | WeTransfer | Google Drive | Wormhole | |
|---|---|---|---|---|
| How files travel | Device to device, over an encrypted direct connection | Uploaded to WeTransfer, then downloaded by the recipient | Uploaded to your Drive, then shared and downloaded | Up to 5 GB: stored encrypted. Larger: peer to peer |
| Stored on servers | Never | Yes: on the Free plan, 3 days | Yes, until you delete it | Up to 5 GB: yes, encrypted, for 24 hours |
| Size limit | None set; verified to 5 GB so far | Free: up to 10 transfers or 3 GB in total in any 30 days | Free: 15 GB of storage, shared with Gmail and Google Photos | Stored transfers up to 5 GB; larger files go peer to peer |
| Account needed to send | No | Yes: a free account, required since November 2024 | Yes (a Google account) | No |
| End-to-end encrypted | Yes: AES-GCM with a 256-bit key that only the link carries | Not end-to-end encrypted | Not end-to-end encrypted for personal accounts | Yes |
| Sender must stay online | Yes, until the download finishes | No: the upload finishes, then the sender can leave | No | Peer-to-peer mode: yes |
Competitor details checked 24 September 2026 on each company’s own site; sources are linked below. Plans change, so check theirs before you rely on a limit.
Compare WispFile with Dropbox, OneDrive, Send Anywhere and FilePizza too
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Sending PSD filesContracts, records and designs under NDA, with no copy left on a third party’s servers.
Secure transfer without cloud storageMove builds, disk images and datasets between machines; see exactly how the transfer works.
WebRTC file transfer, explainedShared history, roles and an audit log on the Team plan, with your branding on every link.
Team planWindows to Mac, phone to PC, across the room or across the world, with no cable or app.
Transferring between two computersNo limit is set. Nothing is uploaded, so there is no storage to fill, and files are written to the receiver’s disk as they arrive rather than held in memory. The largest transfer verified end to end so far is 5 GB; larger files move the same way, and we are testing them now.
Yes. The files come straight from your device, so keep the WispFile tab open until the receiver has them. If either side drops for a while, the download continues from where it stopped once you are both back.
No. Files are never stored, and each piece is encrypted with a 256-bit key that lives only in the link, after the #. Browsers never send that part of a link to a server. On the free plan the files never touch our servers at all; on paid plans, if two networks cannot connect directly, the encrypted bytes pass through our relay, which cannot read them either.
WeTransfer uploads your files to its servers, keeps them for a few days, and limits free use (since November 2024 it also needs an account to send). WispFile uploads nothing: the receiver downloads straight from your device while you are online, encrypted with a key WispFile never sees, with no size cap and no account.
Why the upload step exists, how to skip it, and the one trade-off.
Every realistic way to move 50 GB, with the times and limits.
Confidential documents, and why the safest copy is the one never made.
Signaling, NAT traversal, data channels and what can go wrong.
We’re inviting people who send large files often to try WispFile early and tell us what gets in the way. Leave your address and we’ll email you when there’s a place.
No account, no upload, nothing stored. Add your files and share the link.
Send files now