n9.cl shortens URLs and supports custom links, with interface options in several languages.
Nayuki QR Code Generator
An open-source QR generation library with browser examples and implementations in several languages.
About Nayuki QR Code Generator
The Nayuki QR Code Generator is an open-source library for generating QR codes, released under the MIT License. It prioritizes flexible options and absolute correctness, with ports for 6 programming languages (Java, TypeScript/JavaScript, Python, Rust, C++, C) that have no external dependencies and each total roughly 1000 lines of code. A live browser demo is available for the TypeScript port, and the library supports all 40 QR Code Model 2 versions and 4 error correction levels, with options for manual control of version ranges, mask patterns, and error correction levels.
Key features
- Open-source under permissive MIT License
- Ports for 6 languages with no external dependencies
- Supports all 40 QR versions and 4 error correction levels
- Live browser demo for TypeScript implementation
- Manual control of version range, mask pattern, and error correction
- Compact encoding for numeric and special-alphanumeric text
Best for: Developers needing a correct, dependency-free QR code generation library for multiple programming languages.
Good for
- Generated QR codes are identical across all language implementations
- Compact ~1000-line codebase per language with extensive documentation comments
- Supports all 40 QR versions and 4 error correction levels per Model 2 standard
Watch out for
- Advanced Japanese kanji encoding and mixed-segment optimization are limited to the Java port
Nayuki QR Code Generator at a glance
- Category
- Online Tools › URL & Link Tools
- Type
- Online tool
- Pricing
- Free
- Open source
- Yes
- Last checked
- Oct 9, 2026 · Online when checked
- Listed
- Oct 9, 2026
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Nayuki QR Code Generator FAQ
What license is the library released under?
MIT License.
How many programming languages is the library available for?
6: Java, TypeScript/JavaScript, Python, Rust, C++, and C.
Are generated QR codes identical across different language implementations?
Yes, the algorithms are translated faithfully to produce identical results.
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