Wormhole
wormhole.app
Encrypts the file in your browser, then hands you a self-expiring link
send.tresorit.com
A 5 GB end-to-end encrypted drop that needs no sign-up on either side.
Tresorit Send is the free, no-account slice of a Swiss end-to-end encrypted cloud service: choose files up to 5 GB, get a link, and the recipient downloads without registering either. Encryption happens in your browser before upload, and the company operates under Swiss data protection law. It is strictly one-way — no folder, no comments, no route for them to send anything back.
Questions
Works the moment the page loads. No account, no email, no trial. Capped at 5 GB per link and the link expires — it is a transfer, not shared storage.
Yes. Tresorit Send sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Capped at 5 GB per link and the link expires — it is a transfer, not shared storage.
Alternatives
Same category or same task, ordered by how closely they overlap.
wormhole.app
Encrypts the file in your browser, then hands you a self-expiring link
file.io
Uploads a file and deletes it the moment someone downloads it
pairdrop.net
Finds other browsers on your network and sends files straight to them
toffeeshare.com
Streams a file from your browser to theirs with no copy in between
send-anywhere.com
Pairs two devices with a six-digit key instead of sending a link
fromsmash.com
Sends a file of any size without charging you for the big ones