Send a file. It self-destructs.
Encrypted in your browser · password-protected · gone after download
The key lives in your link. We never see your file.
Gone after the first download, or when it expires.
Free and private. Works anonymously — sign in for higher limits.
How sending a file works
DocuChan encrypts your files in this browser before anything is uploaded. A random AES-256-GCM key is created for each send, and only encrypted bytes reach storage — the filename is encrypted too. Several files are bundled into one encrypted package, so the recipient gets a single link.
The key travels in the part of the link after #, which browsers never send to a server. Anyone with the complete link can open the file, so share it the way you would share the file itself. An optional password adds a second check: the recipient then needs both the link and the password.
You choose how long the link lives. Burn after download deletes the file as soon as one download completes; otherwise it expires after the time you pick — up to 7 days. Without an account you can send up to 5 GB per file; a free account raises that to 10 GB.
Questions about sending
Does the recipient need an account or an app?
No. They open the link in a current browser, enter the password if you set one, and the file is decrypted on their device.
Can DocuChan see what I send?
No. Files and filenames are encrypted before upload and the key stays in the link, so our servers only hold ciphertext. It also means we cannot recover a lost link.
What happens when the link expires?
The encrypted file is deleted from storage and the link stops working. Copies the recipient already downloaded stay with them.