One-Time File Sharing.
Zero Residual Trace.
Recipient downloads once using an ephemeral 4-digit code, and the file instantly self-destructs.
Instant File Sharing, 4-Hour Self-Destruction
Drag & drop a file here or browse
Max size: 4MB. File self-destructs after 1 download or 4 hours.
Enter 4-Digit Code
The file will download and immediately self-destruct.
How IH4 Works in 3 Steps
Zero accounts, zero permanent links, zero residual footprint.
Upload File
Drop any file up to 4MB. The payload is instantly hashed and stored securely without your identity or account.
Share 4-Digit Code
Receive an ephemeral 4-digit code. Share it with your recipient via chat, voice, or direct link.
Self-Destruction
The file is downloaded once and immediately destroyed on the server. Unclaimed files expire after 4 hours.
Frequently Asked Questions
Can a file be downloaded more than once?
No. IH4 uses atomic database locking. As soon as the recipient receives the file, the physical payload is destroyed and the record is permanently deleted.
What happens if the recipient doesn't download the file?
The file is automatically deleted after 4 hours by our background garbage collection daemon.
Why is there a 4MB limit?
IH4 is tailored for sensitive lightweight files, keys, and documents. The 4MB constraint ensures rapid, atomic, in-memory streaming with zero server bloat.