Every file sharing service claims to be free, fast, and secure. The differences hide in the fine print: size caps, server storage, expiry windows, and signup walls. Here's an honest rundown of seven popular options in 2026, including where each one genuinely shines.
Quick comparison
| Service | Free limit | Files stored on server? | Signup? |
|---|---|---|---|
| ZetaShare | Unlimited | Never | No |
| WeTransfer | 2 GB | Yes, until expiry | No (pushed) |
| Wormhole | 10 GB | Yes, 24 hours | No |
| file.io | 2 GB | Until downloaded | No |
| ShareDrop | Unlimited | No (local network) | No |
| MEGA | 20 GB storage | Yes, permanent | Yes |
| Smash | Unlimited (slowed) | Yes, 7 days | No |
1. ZetaShare — best for unlimited, private transfers
ZetaShare transfers files directly between browsers over an encrypted P2P connection (DTLS 1.3). No server ever stores your file, so there's no size limit, no expiry, and no signup. Supports password-protected and custom links. The trade-off: both sides must be online during the transfer.
2. WeTransfer — best-known name
The default choice for many, with a polished experience. But the free tier caps at 2 GB, links expire in days, and files sit on WeTransfer's servers. See our full WeTransfer alternative breakdown.
3. Wormhole — best encrypted store-and-forward
End-to-end encrypted with a slick interface. Files up to 10 GB are stored (encrypted) for 24 hours so recipients can download later. Good middle ground; see our Wormhole comparison.
4. file.io — best self-destructing links
Upload, share, and the file deletes after one download. Simple and clever, though the free cap is 2 GB and the file does live on their servers until it's grabbed.
5. ShareDrop — best on the same Wi-Fi
AirDrop in a browser tab. Brilliant for beaming files across a room, but limited when your recipient is on another network.
6. MEGA — best free cloud storage
20 GB of free encrypted storage. It's cloud storage rather than a transfer tool — great when you want files to stay somewhere.
7. Smash — best for unhurried big sends
No size limit on the free tier, but transfers above a threshold are queued at lower priority, and files are stored on their servers for 7 days.
The bottom line
If you want a file to live in the cloud, MEGA fits. If your recipient is offline until tomorrow, Wormhole or Smash cover the gap. But for the core job — getting a file of any size from you to someone else, right now, privately — a direct P2P transfer is hard to beat: no cap, no server copy, no account.
Try a free unlimited transfer and compare for yourself.