Encrypted File Sharing – True E2E, Zero-Knowledge
Your files are encrypted in your browser before they reach our servers. Not even we can read them. The most private way to share files.
Your files are encrypted in your browser before they reach our servers. Not even we can read them. The most private way to share files. When you share a file that matters, you need to know it's safe. cryptfiles.cloud encrypts every file locally before upload — the key never leaves your browser. Your files are safe even if our servers were compromised.
Why cryptfiles.cloud for Encrypted file sharing
XChaCha20 End-to-End Encryption
Every file is encrypted client-side with XChaCha20-Poly1305 before it ever reaches our servers. Only you hold the key.
Zero-Knowledge Architecture
We only store encrypted ciphertext. Your plaintext content is technically inaccessible to us – by design.
EU Servers – Stockholm, Sweden
All data stays in the European Union on servers in Stockholm. No critical data transfer to third countries, no US Cloud Act exposure.
Fully GDPR Compliant
Data Processing Agreement (DPA), GDPR-compliant privacy policy and transparent legal documentation – everything included.
For lawyers, journalists, teams, and privacy-conscious individuals
When you share a file that matters, you need to know it's safe. cryptfiles.cloud encrypts every file locally before upload — the key never leaves your browser. Your files are safe even if our servers were compromised.
Encrypted file sharing - up and running in minutes
Browser generates key
A unique random key is generated locally in your browser. Never sent to the server.
File encrypted locally
XChaCha20-Poly1305 encrypts your file on your device before any byte is transmitted.
Key in the link
The decryption key is embedded in the URL fragment (#) — never sent to the server per HTTP spec.
Questions about Encrypted file sharing
HTTPS protects the transport only — the server can still read your file. E2E encryption means the file is encrypted before upload. The server only ever sees unreadable ciphertext.
No. We store only encrypted ciphertext. The decryption key is in your share link's URL fragment, which per HTTP specification is never transmitted to the server.
XChaCha20-Poly1305 — a modern AEAD cipher that's considered faster and more secure than AES-GCM, recommended by libsodium and widely used by security experts.
Yes. Encryption runs via the WebCrypto API in all modern browsers — Desktop, iOS, Android. Upload, encrypt, and share from any device.
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10 GB free storage, end-to-end encrypted, EU servers, optional revenue sharing. No credit card required.
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