Unlimited File Sharing: How to Send Files of Any Size Without Cloud Storage

"Unlimited file sharing" is a phrase that cloud services use loosely: unlimited downloads, unlimited links, or a plan that is unlimited only until you reach a quota. Real unlimited file sharing is simpler and works on a different principle — if a file never has to be stored, there is nothing to limit. This guide explains how that works and how to share files of any size without cloud storage.

Why cloud services have limits

When you send a file through a cloud service, it is uploaded to a server, stored, and then downloaded by the recipient. Storing and moving data costs the provider money, so they cap it: a storage quota (for example, a handful of gigabytes on a basic plan), a per-file size limit, or an expiry date after which the file is deleted. Paid plans raise the limits but do not remove them.

The principle behind unlimited sharing

Direct, or peer-to-peer, sharing skips the storage step. Your device and the recipient's device connect to each other and the data flows between them. The service in the middle only helps the two devices find each other, which takes a few kilobytes — not your 40 GB video. That is why there is no need for a quota: nothing is held anywhere.

This uses WebRTC, the technology browsers use for video calls. Data is encrypted in transit and goes straight from sender to receiver.

How to share any size of file with PeerFlow

1. Open the PeerFlow home page on the sending device and choose your files (or drag them in).
2. You get a six-character code, a link and a QR code.
3. The receiver opens the link, scans the QR code or enters the code. No account and no install is needed.
4. The transfer starts at once. Each finished file downloads on the receiving side.

You can send several files at once and to several receivers at once. The sender keeps the page open until everyone has finished.

Making it fast

• Same network. If both devices are on the same Wi-Fi, office LAN or phone hotspot, PeerFlow uses the local route, so the file never touches the internet and moves at the speed of your network.
• Share nearby. This mode connects only over the local network, which is handy on a slow or metered internet connection.
• Wired where you can. For multi-gigabyte files, a cable or good Wi-Fi signal helps more than anything else.

What "unlimited" does not mean

Honesty matters here, so two caveats:

• The device still has to hold the file. The receiver needs enough free space, and very large files depend on the browser's memory handling.
• Both sides must be online together. Because nothing is stored, the receiver cannot download after you close the page. If you need the file to be available later, use cloud storage for that file.

Privacy as a side effect

Because no copy is made, there is nothing to leak later and nothing to delete afterwards. Close the page and the transfer is gone. When a direct path is impossible on some strict networks, the transfer can use an encrypted relay that cannot read the content.

Cloud storage vs direct sharing

Use each for what it is good at. For handing over big files quickly and privately, read how P2P file transfer works, see other ways to send large files, or look at the WeTransfer alternative comparison.