Qromium Browser Downloads
Choose your platform and download the quantum-safe browser with built-in post-quantum digital signature and post-quantum key encapsulation support.
Windows NEW
- post-quantum digital signatures
- post-quantum key encapsulation-768, post-quantum key encapsulation-1024 key exchange
- Built-in PQC Root CA trust store
- Windows 10/11 compatible
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Ubuntu / Debian
- post-quantum digital signatures
- post-quantum key encapsulation-768, post-quantum key encapsulation-1024 key exchange
- Built-in PQC Root CA trust store
- Integrated PQC Wallet extension
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macOS
- Native Apple Silicon support
- Full post-quantum digital signature signature validation
- post-quantum key encapsulation quantum-safe key exchange
- Optimized for macOS performance
Android NEW
- Full post-quantum digital signature certificate validation
- post-quantum key encapsulation-768 quantum-safe key exchange
- Mobile-optimized UI/UX
- PQC Root CA pre-installed
Quick Installation - Windows
System Requirements
- OS: Windows 10 (64-bit) or Windows 11
- Architecture: x86_64
- RAM: 4GB minimum (8GB recommended)
- Disk: 500MB free space
Step 1: Download
Download the Windows installer from the link above.
Step 2: Run Installer
Double-click Qromium_Setup_1.0.0.exe to launch the installer.
Note: You may see a Windows SmartScreen warning. Click "More info" then "Run anyway" to proceed.
Step 3: Launch Qromium
After installation, find "Qromium" in your Start menu or desktop shortcut.
Step 4: Test PQC Functionality
Visit our PQC demo site to verify quantum-safe connections:
https://demo.pqcnow.com:9443/
You should see a green padlock with successful post-quantum digital signature certificate validation!
Quick Installation - Ubuntu/Debian
System Requirements
- OS: Ubuntu 20.04+ or Debian 11+
- Architecture: x86_64 (amd64)
- RAM: 4GB minimum (8GB recommended)
- Disk: 1GB free space
Step 1: Download
Download the Debian package from the link above, or use wget:
wget https://pqcnow.com/downloads/qromium_1.0.0_amd64.deb
Step 2: Verify Checksum (Optional but Recommended)
Download and verify the SHA256 checksum:
wget https://pqcnow.com/downloads/qromium_1.0.0_amd64.deb.sha256
sha256sum -c qromium_1.0.0_amd64.deb.sha256
Step 3: Install
Install the package using apt:
sudo apt install ./qromium_1.0.0_amd64.deb
Step 4: Launch Qromium
Start Qromium from the command line:
qromium --no-sandbox
Or find "Qromium" in your applications menu.
Step 5: Test PQC Functionality
Visit our PQC demo site to verify quantum-safe connections:
qromium --no-sandbox https://demo.pqcnow.com:9443/
You should see a green padlock with successful post-quantum digital signature certificate validation!
Additional Resources
PQC SSL Certificates
Get NIST-standardized post-quantum digital signature certificates for your website. Protect against quantum computer attacks.
Order CertificatePQC Root CA Certificate
Download our PQC root certificate for manual installation or testing purposes.
Download CertificateDocumentation
Complete guides for installation, configuration, and troubleshooting.
View DocumentationWhy Choose Qromium?
🛡️ Quantum-Resistant Security
Built on NIST-standardized post-quantum cryptography standardized post-quantum digital signature for future-proof security.
⚡ High Performance
Optimized lattice-based cryptography provides quantum security without sacrificing speed or user experience.
🔒 Multiple Security Levels
Support for multiple post-quantum security levels.
🌐 Chromium-Based
Built on Chromium for full web compatibility and familiar browsing experience with added PQC security.
💼 Enterprise Ready
Production-ready browser suitable for organizations preparing for the quantum computing era.
🔗 Hybrid Security
Combines traditional encryption with post-quantum algorithms for maximum security during the transition period.