FAQ
Is there a file size limit?
No. Because your file isn't uploaded to a server, there's no quota to hit. The practical limit is set by your device's memory and the chunking we use, so very large files are fine. Both people just need a strong connection.
Are my files stored on your servers?
No. ZapDrop uses WebRTC to send the file directly from one browser to the other. The Cloudflare Worker only relays the connection handshake — it never sees or stores your file's bytes.
Does the receiver need an account?
No. The receiver just opens the share link and chooses where to save the file. There's no signup, no app to install.
Which browsers are supported?
The transfer works on all modern browsers that support WebRTC (Chrome, Edge, Firefox, Safari). For a seamless 'save to a folder' experience with the ability to resume across a refresh, Chrome and Edge are best; other browsers fall back to a standard download.
What if the connection drops mid-transfer?
If the connection is interrupted, we resume from where the receiver left off as soon as the sender is still online and reconnects. On Chrome/Edge the receiver can even refresh the page and continue.
Is the transfer encrypted?
Yes. WebRTC is end-to-end encrypted between the two browsers, so the file is protected in transit.
ZapDrop is a neutral peer-to-peer file transfer service. We do not host, moderate, or monitor transferred files and are not responsible for how they are used. Users are solely responsible for ensuring the content they share is lawful, and bear sole legal responsibility for any unlawful use.