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🇩🇪 Deutsche Version
🚀 Qopy Features - Military-Grade Secure Text Sharing Redefined
Qopy is not just another text sharing service. It's a privacy-first, security-focused platform with military-grade encryption that puts your data protection above everything else. Here's what makes Qopy the ultimate choice for secure text sharing.
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Military-Grade Client-Side Encryption
Your content is encrypted with AES-256-GCM encryption directly in your browser before it ever reaches our servers. We literally cannot read your content, even if we wanted to.
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Automatic Expiration
Set expiration times from 5 minutes to 24 hours. Your content automatically disappears after the specified time, ensuring nothing is stored permanently.
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Password Protection
Add an optional password to your shared content. Passwords are processed with 100,000 PBKDF2 iterations and never leave your browser.
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One-Time Access
Enable self-destruct mode so your content disappears immediately after the first person views it. Perfect for sensitive information.
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QR Code Sharing
Generate QR codes for easy mobile sharing. Simply scan the code with any smartphone to access your shared content instantly. QR codes are generated client-side for maximum privacy - no external API calls required.
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No Registration Required
Start sharing immediately without creating accounts or providing personal information. Complete anonymity from the start.
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Quick Share Mode
Ultra-fast sharing with 4-character codes and 5-minute expiration. Perfect for temporary, non-sensitive content sharing.
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REST API Access
Integrate Qopy into your applications with our comprehensive REST API. Note: Client-side encryption is only available through the web interface.
🔒 Advanced Security Features
Military-Grade Encryption Features
Qopy implements cutting-edge encryption techniques for maximum security:
- AES-256-GCM encryption - Military-grade algorithm used by governments worldwide
- PBKDF2 key derivation - 100,000 iterations for password-protected content
- Hybrid security system - URL secrets + passwords for defense in depth
- Deterministic IV derivation - IV derived from combined secret for password-protected clips
- Binary storage - Direct byte concatenation, stored as BYTEA for efficiency
- Random key generation - Cryptographically secure random keys for non-password clips
- Authenticated encryption - GCM mode provides both confidentiality and integrity
- Zero-knowledge architecture - We literally cannot read your content
Hybrid Security Architecture
Qopy's innovative hybrid security combines multiple protection layers:
- URL secrets - 16-character random secrets automatically generated and included in share URLs
- User passwords - Traditional password protection chosen by users
- Combined secrets - Both secrets combined for maximum security (URL_secret:password)
- Defense in depth - Even weak passwords are protected by the URL secret
- URL-based access control - Only those with the complete URL can attempt decryption
- Two-factor security - Something you know (password) + something you have (URL)
Zero-Knowledge Architecture
True privacy protection with zero-knowledge guarantees:
- We never see your plain text content
- All encryption happens in your browser
- Only encrypted data is stored on our servers
- Passwords never leave your browser
- URL secrets never leave your browser
- Even if our servers were compromised, your data would remain secure
- No IV transmission - derived deterministically from combined secret
Rate Limiting & Abuse Prevention
Our multi-layered rate limiting system prevents abuse while ensuring fair usage:
- Burst protection against rapid-fire attacks
- General API protection for overall stability
- Content-specific limits to prevent spam
- IP-based enforcement with temporary processing
API Security Limitations
Important: Client-side encryption is only available through the web interface. When using the API directly:
- Content is sent as plaintext to the server
- Server-side encryption is applied
- For maximum security, always use the web interface
📊 How Qopy Compares to Alternatives
Qopy vs Pastebin
Feature |
Qopy |
Pastebin |
Encryption |
✅ Client-side AES-256 |
❌ None |
Registration |
✅ Not required |
⚠️ Required for features |
Auto-expiration |
✅ Guaranteed |
⚠️ Manual only |
Ads |
✅ None |
❌ Intrusive |
Mobile Experience |
✅ QR codes, responsive |
❌ Poor |
🎯 Use Cases
For Developers
- Share code snippets securely with team members
- Quick debugging assistance without exposing sensitive data
- API integration for automated workflows
- Secure sharing of configuration files
For Business
- Share sensitive documents with clients
- Secure communication of passwords or credentials
- Temporary sharing of confidential information
- Compliance with data protection regulations
For Personal Use
- Share notes with family members
- Secure storage of temporary information
- Privacy-focused communication
- Mobile-friendly sharing with QR codes
Ready to Experience Secure Text Sharing?
Join thousands of users who trust Qopy for their secure text sharing needs. No registration, no tracking, just pure privacy and security.
Start Sharing Securely Now