Frequently Asked Questions

It's super simple:

1. Go to zapfile.ai
2. Select your file(s) or folder
3. Click "Create Room & Send"
4. Share the room code with your recipient
5. They enter the code and the transfer starts automatically

Nope! ZapFile works completely without any signup or registration. Just open the site and start transferring.

Yes! ZapFile works on any device with a modern browser - phones, tablets, laptops, desktops. You can transfer files between any combination of devices.

No, never. Files are transferred directly between devices using peer-to-peer technology. They never touch our servers. We literally cannot see or store your files.

Yes! All transfers are end-to-end encrypted using WebRTC's built-in encryption (DTLS-SRTP). Only you and your recipient can see the files.

No. Since files are transferred directly between devices and encrypted, we have no way to see what you're sharing. We only facilitate the connection between devices.

We collect minimal analytics to improve the service (things like "how many transfers succeeded" and "what browsers people use"). We don't track individual users or see file contents. Check our Privacy Policy for full details.

There is no file size limit! Since we don't store files, you can transfer files of any size. The only limit is your patience and connection stability.

Transfers happen at the full speed of your internet connection because it's peer-to-peer. No server bottlenecks. The actual speed depends on both devices' upload/download speeds and internet connection quality.

Yes! Use the "Multiple Files" tab to select multiple files or even entire folders. They'll all be transferred together.

Room codes expire after 24 hours of inactivity. Both sender and receiver need to be connected at the same time for the transfer to work.

Currently, you'll need to start over. However, we're working on resume functionality so you can pick up where you left off if the connection drops.

Try these steps:

• Make sure both devices are connected to the internet
• Refresh the page and create a new room
• Check if you're behind a strict firewall or VPN
• Try a different browser
• If you're on a corporate network, it might block P2P connections

Common reasons:

• Room codes are case-sensitive - make sure it's entered exactly
• The sender might have closed the page
• The room code might have expired (24 hours)
• Try creating a new room

ZapFile works on all modern browsers that support WebRTC:

• Chrome/Edge (version 80+)
• Firefox (version 75+)
• Safari (version 14+)
• Opera (version 67+)
• Mobile browsers (Chrome, Safari, Samsung Internet)

Usually yes, but some strict corporate or school firewalls might block P2P connections. If that's the case, try using a personal device on a different network.

ZapFile is completely free. No hidden costs, no premium tiers, no file size limits, no transfer limits.

Yes! Since we don't store files, our costs are minimal. The free version will always exist. If we add premium features in the future, they'll be optional extras.

There's no limit! Transfer as many files as you want, as often as you want.

Not yet, but it's on our roadmap! For now, the room code acts as a basic password - only someone with the code can access the transfer.

Yes! This is our top priority. We're working on letting you resume interrupted transfers without starting over.

Not currently, but we're planning to add a local transfer history stored only on your device.

Not yet, but we're considering it. If you're interested in integrating ZapFile into your app or service, email us at [email protected]

If your question isn't answered here, feel free to contact us. We're happy to help!

For bug reports, use our bug reporting page.

Want to learn more about how the technology works? Check out our How it Works page.