Designed to forget.
Everything you share disappears the moment you're done. No accounts. No traces. No compromises.
Simple by design. Gone by default.
No account. No app. No cleanup — for either of you.
-
Add files
Drop in a file or folder — up to 1 GiB (1 GB) per transfer, straight from your browser.
-
Share a code
You get a short code and a link. Send either one — that's the invitation.
-
Watch it arrive
They accept, it arrives, and when it's done, it's gone for good.
The best file transfer is the one that leaves no trace.
We built Tallow with a singular conviction: your data should exist only as long as you need it to. Nothing is written to disk. Ever. Room state lives in memory and is zeroized the moment it is no longer needed; the relay's operational log records only request metadata — timestamp, method, path, status, latency and bytes — with IP addresses stripped before anything is written. The moment your transfer completes, everything is gone — as if it never happened.
Everything a transfer needs. Nothing that keeps it.
How Tallow differs.
A direct comparison with app-first transfer tools.
Comparing with LocalSend
| Feature | Tallow | LocalSend | Blip |
|---|---|---|---|
| Receiver needs an app | No — any browser | App (web client: same network only) | Yes — both sides |
| Works across the internet | Yes — relay + peer-to-peer | No — local network only | Yes |
| Files held by the service | Never | No server at all | No storage — relayed when direct fails |
| Max size | 1 GB / room ← we lose here | No service-side cap | No limit |
| Client-side encryption | Always in End-to-end mode (Transport-only is relay-carried) | Direct, TLS built in | mTLS over TLS 1.3 (as stated) |
| Post-quantum KEM | ML-KEM-1024 hybrid docs → | No | No |
| Price | Free — unlimited rooms | Free | Free non-commercial · $25/mo commercial |
| Open source | AGPL-3.0 — publishing 2026-10-01 | Yes — Apache-2.0 | No public source |
Where we lose. Rooms cap at 1 GB (LocalSend and Blip have no service-side size cap); our transfers need the relay reachable to start — LocalSend needs no internet at all; and our source is AGPL-3.0 but not yet published, while LocalSend's is fully open. That is the trade — the other columns are what it buys.
Asked & answered.
Do I need an account?
No. No sign-up, no email, no personal data — nothing to remember, and nothing to install.
Does the other person need Tallow?
No. Send them the link and they open it in any browser. No app, no account, no instructions.
What does it cost?
Nothing. Tallow is free to use — send as many transfers as you like.
Which devices does it work on?
Anything with a modern browser — phone, tablet, laptop, desktop. Nothing to install on either end.
How big can a transfer be?
Up to 1 GiB (1 GB) per transfer. For anything larger, split it across a few transfers — each one disappears the moment it lands.
Where do my files go?
Only to the person you're sending to. Files are encrypted before they leave your device, and nothing is ever written to disk — there is no server copy to leak or delete.
What happens when the transfer is done?
The room self-destructs. The code stops working, everything held for the transfer is erased, and nothing is left behind — except the delivered file.
Is it really private?
Yes — by construction, not by policy. In End-to-end mode, files are sealed with post-quantum encryption before they leave your device, and only the person you're sending to holds the key. (Transport-only mode is relay-carried by design — no end-to-end encryption.) How the encryption works →
More questions? Everything's answered in the docs →
Just drop a file.
No account. No stored uploads. No waiting. Your file is encrypted in your browser and disappears after delivery.
Send Now