Blackhole FileShare

Share files nobody else can read.

Every file is encrypted in your browser before it's ever uploaded. We only ever store ciphertext — the decryption key lives in your share link, never on our servers.

True end-to-end encryption

Files are encrypted with a random key generated in your browser using AES-256-GCM, before a single byte is uploaded.

Encrypted filenames too

We don't just protect your file contents — the filename is encrypted client-side as well, so we never learn what you shared.

The key never touches our servers

Your share link carries the decryption key after the "#" — a part of the URL browsers never send to any server.

Self-destructing links

Every file expires automatically and disappears for good once its download limit is reached.

No email required

Sign up with just a username and password. Email is entirely optional.

Decrypted only in your browser

Downloads are decrypted locally on the recipient's device — we never see the plaintext file.

Plans

Launchpad

Free Plan

  • 50 MB maximum file size
  • 1 GB account storage
  • 1-day expiration
  • 5 downloads per file

Free

Orbiter

Basic Plan

  • 256 MB maximum file size
  • 25 GB account storage
  • 14-day expiration
  • 25 downloads per file

0.00004000 BTC/month

Event Horizon

Extended Plan

  • 1,024 MB maximum file size
  • 20 GB account storage
  • 30-day expiration
  • 100 downloads per file

0.00008000 BTC/month