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// Base45 encoding optimized for QR codes and digital certificates
QR Code Efficient
Specifically designed for optimal QR code density and scanning reliability.
RFC 9285 Standard
Follows the official Base45 standard used in EU Digital COVID Certificates.
Space Saving
More efficient than Base32 for QR codes while maintaining readability.
>> technical info
How Base45 Works:
Base45 uses 45 characters optimized for QR code Alphanumeric mode. It encodes data in groups of 2 bytes into 3 characters, achieving better efficiency in QR codes.
Example:
"Hello" → %69 VD92EX0
Why Use Base45:
- >Optimized for QR code density
- >EU Digital Certificate standard
- >Better than Base64 for QR codes
- >Reduces QR code complexity
- >Improves scanning reliability
>> frequently asked questions
What is Base45 encoding?
Base45 is an encoding scheme that uses 45 characters specifically chosen to work efficiently with QR code Alphanumeric mode, as defined in RFC 9285.
Why was Base45 created?
Base45 was created to optimize data storage in QR codes, particularly for the EU Digital COVID Certificate. It's more efficient than Base64 when encoded in QR codes.
How is Base45 different from other encodings?
Base45 uses exactly the characters supported by QR code Alphanumeric mode, making it 20-30% more efficient than Base64 when stored in QR codes.
Where is Base45 commonly used?
Base45 is primarily used in digital health certificates, EU Digital COVID Certificates, and other applications where data needs to be efficiently encoded in QR codes.