A pure JavaScript library for generating QR codes using HTML5 canvas.
QRious is a pure JavaScript library for generating QR codes using HTML5 canvas. It allows developers to create customizable QR codes directly in the browser without any external dependencies. The library provides fine-grained control over appearance, error correction, and output formats.
Frontend developers and web designers who need to generate QR codes dynamically in web applications without relying on server-side rendering or external APIs.
Developers choose QRious for its simplicity, zero dependencies, and full client-side operation, making it ideal for lightweight integrations where control over QR code styling and performance is important.
Pure JavaScript library for QR code generation using canvas
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QRious is a pure JavaScript library with no external dependencies, reducing bundle size and simplifying integration, as highlighted in its philosophy focusing on simplicity and performance.
Provides fine-grained control over colors, alpha transparency, padding, size, and error correction levels through a simple API, evidenced by options like foregroundAlpha, background, and level in the README.
The API allows instantiation with options and batch updates via the set() method, minimizing code for dynamic QR code generation, as demonstrated in the examples with constructor and set() calls.
Uses HTML5 canvas for high-quality, scalable images and supports data URI export via toDataURL(), enabling easy embedding in web pages without server calls, as shown in the API section.
QRious only generates raster images via canvas, so it cannot produce vector-based SVG QR codes, which are essential for high-resolution displays or printing scenarios requiring infinite scalability.
The library includes a migration guide for older versions, indicating that major updates may introduce incompatible changes, potentially disrupting existing implementations and requiring manual adjustments.
Relies on HTML5 canvas, making it incompatible with older browsers like Internet Explorer 8 without polyfills, which restricts its use in legacy or enterprise environments.