Open-source alternatives to Python Qrcode

gm is a JavaScript image processing library and Node.js manipulation tool that serves as a programmatic wrapper for the GraphicsMagick engine. It translates JavaScript method calls into shell commands to automate the resizing, cropping, and transformation of images. The library provides an interface to execute specific GraphicsMagick operations while allowing raw command passthrough for custom arguments or engine features not covered by the standard API. Its capabilities cover geometric manipulation, color and tone adjustment, and image quality optimization. It includes tools for image compo

This project is an image processing library designed for manipulating pixel data, applying visual filters, and adjusting image appearance. It functions as a low-level tool for processing raw pixel buffers and managing image data. The library provides a toolkit for image geometry manipulation, including resizing, cropping, flipping, and rotating images. It also serves as an image format converter for encoding and decoding data between common binary file formats and as a metadata extractor for retrieving dimensions and color profiles from file headers. The capabilities cover low-level image pr

QRCoder is a native C# library for generating and rendering QR codes from text and data payloads. It provides a dependency-free implementation of the QR code standard for the .NET ecosystem, handling the full process from data encoding to visual output. The library includes tools for customizing QR codes through the adjustment of colors, error correction levels, and the embedding of custom logos. It also supports standardized payload formatting for specific data types such as WiFi credentials, contact cards, and payment systems. The rendering engine outputs QR codes into multiple formats, in

This project is a React component library for generating and rendering customizable QR codes. It provides tools to produce QR codes as either scalable vector graphics or via an HTML5 canvas. The library enables branded QR code design by allowing the embedding of custom logos or images into the center of the code. It supports a range of visual customizations, including the adjustment of dimensions, foreground and background colors, and margin thickness. The toolset covers the programmatic control of error correction levels to maintain scannability when using overlays. It also includes capabil

Awesome-qr.js is a JavaScript library designed for the generation and rendering of customizable QR codes. It provides a framework for encoding data into structured bit arrays while allowing for extensive visual styling, enabling the creation of branded graphics that remain compatible with standard scanning software. The library distinguishes itself through its support for layered graphical composition, which allows users to integrate background images, animated GIFs, and center logos directly into the QR code structure. To maintain scan reliability, it employs automated image binarization, en

This library provides a framework for generating and styling QR codes within web applications. It transforms raw data into scannable patterns, allowing developers to render these codes directly in the browser using either canvas or vector-based graphics. The project distinguishes itself through extensive customization options that allow for the modification of individual visual components. Users can apply custom shapes, color gradients, and embedded images to the generated patterns, or inject custom elements to align the output with specific branding requirements. The library supports a rang

EFQRCode is a Swift library for generating, styling, and scanning QR codes across iOS, macOS, watchOS, tvOS, and visionOS. It functions as a toolkit for creating both static and animated QR codes and extracting encoded text from one or multiple codes within a single image. The library enables visual branding through the integration of watermarks, icons, and animated sequences. It supports multi-format export, allowing generated codes to be saved as static images, lossless PDFs, animated GIFs, or video files. The toolkit covers high-level functional areas including QR code generation, image-b

This is a PHP library for generating machine-readable QR codes from text or data payloads. It functions as an image library that renders these codes into various formats while providing utilities to verify data accuracy and readability. The project distinguishes itself by supporting branded QR code creation, allowing the embedding of custom logos and text labels. To ensure quality, it includes a validation tool that performs readability verification to confirm that generated codes are scan-ready before deployment. The library covers a broad range of output and rendering capabilities, includi

blessed-contrib is a terminal user interface framework and a Node.js console widget library designed for building data-driven command line interfaces. It serves as an ASCII data visualization toolkit and a dashboard framework for organizing grid-based layouts and interactive elements within a console. The project provides a collection of reusable terminal components, including a command line image renderer and tools for text-based graphic rendering. It specifically enables the creation of terminal dashboards through a system for positioning multiple widgets across rows and columns and a mecha

Magick.NET is a C# image processing library that serves as a .NET wrapper for ImageMagick. It provides a raster graphics engine for rendering text, drawing graphics, and manipulating images using a native interface. The library handles the conversion of vector files, such as PDF, EPS, and PostScript, into raster formats. It also includes tools for extracting image metadata, such as EXIF data and raw thumbnails. The system covers a wide range of image manipulation capabilities, including resizing, format conversion, watermarking, and the merging of multiple images into static or animated file

Imagor is a high-performance image processing server and Go library that functions as an on-demand image proxy. It provides a secure transformation API for resizing, filtering, and optimizing images, as well as a tool for generating static thumbnails from video files. The system distinguishes itself by using a demand-driven processing engine to handle large images without loading entire files into memory. It features cryptographic request signing to prevent unauthorized URL tampering and employs header-based format negotiation to automatically serve the most efficient image format supported b

QOI is a lossless image codec and encoding standard designed for high-speed compression and decompression of raw pixel data. It provides a toolkit for translating raw image buffers into a compact format and back into pixel representations without any loss of quality. The implementation focuses on fast image encoding and decoding, enabling the rapid conversion of compressed image data back into raw pixels. It also supports image format conversion to ensure compatibility across different software systems and hardware.

GoCV is a computer vision library and Go language binding for OpenCV. It serves as an image processing toolkit and deep learning inference engine, providing programmatic access to a wide range of algorithms for image manipulation, object detection, and video analysis. The project differentiates itself through high-performance native bindings and hardware acceleration. It utilizes a foreign function interface to map Go calls to C++ functions and includes a hardware-agnostic backend dispatch to route neural network tasks to computation engines such as CUDA and OpenVINO. The library covers a br

This is a Python library for the programmatic creation of standard, artistic, and animated QR codes derived from text or URL inputs. The tool generates stylized visuals by blending QR codes with background images using adjustable brightness and contrast settings. It also creates moving visual codes by merging QR patterns with animated GIFs. The library covers a range of generation workflows, including standard barcode conversion, image-blended artistic designs, and frame-by-frame animated sequences.

This project is a data encoding library and React component generator designed to convert text strings into scannable matrix barcodes. It provides a unified interface for rendering these patterns within both web and mobile application environments, facilitating the integration of dynamic data visualization directly into user interfaces. The library distinguishes itself through a platform-agnostic abstraction layer that supports both scalable vector graphics and pixel-based canvas rendering. This approach ensures that generated codes maintain visual clarity across varying screen resolutions an

libqrencode is a C library for generating QR Code symbols from text, binary, and structured data. It provides a core encoding engine that converts input data into QR Code symbols with configurable error correction levels and version settings, and includes a command-line tool for producing QR Code images directly from text or data input. The library supports multiple encoding modes including numeric, alphabetic, Japanese kanji, and 8-bit binary data, with automatic optimization to select the most efficient mode for a given input string. It can encode arbitrary binary data containing NUL charac

This is a ZXing-based toolkit for integrating barcode and QR code scanning and generation into Android applications. It functions as a barcode scanner capable of decoding data from both live camera streams and static image files. The library includes a QR code generator that supports the creation of image files with custom logos embedded in the center of the code. It also provides a customizable camera scanning interface, allowing for adjustments to the scanning overlay and control over the device flash to improve visibility in low light. Its broader capabilities cover the extraction of text

BGAQRCode-Android is a developer toolkit for Android that provides a library for scanning and recognizing QR codes and barcodes. It functions as a camera scanning framework and a barcode generator for creating one-dimensional and two-dimensional codes. The project includes a customizable UI kit for implementing branded scanning interfaces with adjustable dimensions, colors, and animation styles. It also provides tools for creating customized barcodes featuring specific color palettes and embedded logos. The toolkit manages camera hardware settings, including flashlight control, zoom levels,

wifi-card is a utility for creating printable network credential cards and QR codes to facilitate guest wireless network access. It functions as a generator that produces physical or digital cards containing network names and passwords, automating the process of joining a WiFi network through scannable image formats. The tool operates using a pure-client runtime model, processing all user input and generating the final document entirely within the browser. It employs SVG-based layout rendering and a CSS grid template system to ensure high-resolution, crisp lines across different paper sizes.

Termui is a Go terminal user interface library used for building interactive dashboards and visual layouts within a command-line environment. It functions as a TUI layout engine, an interactive CLI framework, and a terminal data visualization toolkit. The library provides a set of specialized widgets for rendering charts, plots, gauges, and tables using character-based graphics. It includes a grid-based system for arranging interface elements using relative coordinates and proportional sizing to create structured displays. The toolkit covers a broad range of capabilities including data visua

This project is a multi-purpose REST API utility collection and developer suite. It serves as a centralized service for real-time information aggregation, data transformation, and a wide array of programmatic tools. The service distinguishes itself by providing a broad range of specialized content delivery endpoints, from curated daily summaries and global trending rankings to randomized entertainment content like jokes and quotes. It also functions as a real-time aggregator for environmental and network data, including weather forecasts, currency exchange rates, and public IP lookups. The c

This project is a PHP implementation for automating messages, managing custom menus, and handling media uploads for the WeChat ecosystem. It serves as a social media API wrapper, an OAuth 2.0 client library, and a toolkit for enterprise messaging and payment integration. The library distinguishes itself by providing dedicated workflows for official account integration and enterprise management, including the coordination of corporate organizational structures and employee directories. It also includes specialized tools for marketing automation, such as the issuance of digital coupons and the

Common.Utility is a general purpose utility library providing a collection of helper classes for common programming tasks. It functions as a data security framework, a database access wrapper, and a suite of tools for system administration and network communication. The library includes a multimedia processing suite for generating barcodes and QR codes, editing images, and converting video formats. It also provides a network communication toolkit for managing HTTP requests and FTP transfers, as well as integration with email and notification services. The project covers a broad set of capabi

Tablewriter is a Go library and tool for generating ASCII and Unicode tables from structured data. It functions as a multi-format table renderer, converting data into layouts for terminal output, Markdown, HTML, and SVG. The project distinguishes itself through the ability to embed nested tables within cells and merge adjacent cells horizontally or vertically. It also supports ANSI color application for headers, rows, and borders to style terminal user interfaces. The toolkit provides capabilities for mapping Go structs and slices into rows, loading and converting CSV files via a command-lin

Docxtemplater is an office document generation engine designed to automate the creation of personalized business documents, presentations, and spreadsheets. By manipulating the underlying XML structure of office files, the framework replaces placeholders within pre-designed templates with dynamic data, enabling the programmatic production of reports, invoices, and complex data-driven documents. The project distinguishes itself through a modular extension architecture that allows developers to integrate custom logic for handling images, charts, and specialized formatting. It supports advanced

VisiData is a terminal-based interactive data analysis tool and browser designed for exploring, filtering, and sorting large tabular datasets. It functions as a structured data inspector that loads and flattens complex formats like JSON, XML, and PCAP into interactive sheets, as well as a terminal file manager for navigating directories and performing staged filesystem operations. The project distinguishes itself by rendering data visualizations, such as scatter plots and histograms, directly in the terminal using Unicode Braille characters. It provides a Python-based data wrangling environme