fukuchi/libqrencode

Health v2 · maintenance only

Adoption not part of the score

3023 stars · 618 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

libqrencode is a fast, compact C library for encoding data into QR Code symbols, outputting raw bitmap arrays that applications can render directly. It also ships a command-line utility that generates QR Code images in various formats.

Use cases

• generate QR codes in a C or C++ application
• encode a URL or text as a QR code bitmap
• create QR code images from the command line
• embed QR code generation in an embedded or low-dependency project
• generate Micro QR Codes
• render QR codes without external runtime dependencies

When to choose

• you need a lightweight, dependency-free QR encoder in C/C++
• you want raw bitmap data to render yourself rather than image files
• you need a simple CLI tool to produce QR code images
• you need structured-append or kanji-mode QR support

When to avoid

• you need ECI or FNC1 modes, which are unsupported
• you need QR Code model 1 (deprecated)
• you want a high-level library with built-in image rendering in a managed language
• you need Micro QR Codes in production, as support is experimental

Facets

library · maturity stable

image-processing cli sdk developer-tools cross-platform graphics c windows cross-platform cli qr-code barcode qrcode-generator c-library 2d-barcode linux macos

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