Projects sharing features with Prawn

pdfmake is a JavaScript PDF generation library and declarative document engine that transforms structured JavaScript objects into formatted PDF files. It functions as a layout engine capable of producing documents on both the client side within a web browser and on the server side using Node.js. The library utilizes a declarative approach to translate object-based document definitions into final PDFs. It distinguishes itself through a virtual layout engine that calculates element positions and page breaks and an inheritance-based style system that uses dictionaries to maintain visual consiste

pdfkit is a JavaScript PDF generation library used to programmatically create binary PDF documents in Node.js and browser environments. It functions as a vector graphics engine for rendering paths, shapes, gradients, and tiling patterns, and as a tool for producing rich text and tagged documents that follow international accessibility standards for screen reader compatibility. The library includes a security and encryption utility for applying document encryption and restricting user permissions regarding printing, copying, or editing. It also serves as a form and annotation tool, enabling th

jsPDF is a JavaScript PDF generation library and client-side engine that produces documents directly on the user's device. It provides a scriptable interface for creating PDF files within web browsers and other JavaScript runtime environments without requiring a backend server. The library includes a tool for defining document dimensions, orientation, and measurement units to control page layout. It also functions as a Unicode font integrator, allowing for the embedding of custom font files to support diverse languages and special characters. Capability areas cover dynamic document automatio

TCPDF is a PHP library for the programmatic generation of PDF documents, allowing developers to create files containing text, graphics, and forms directly from application code. It includes a typography engine that supports Unicode strings, bidirectional scripts, and the embedding of TrueType or OpenType fonts. The library provides specialized tools for producing documents that adhere to PDF/A, PDF/X, and PDF/UA standards for archiving, printing, and accessibility. It features a digital signing system that applies CMS signatures and RFC 3161 timestamps, supporting long-term validation through

This library provides a framework for constructing professional PDF documents using declarative component syntax. It functions as a document engine that transforms component trees into structured files, allowing developers to define layouts, headers, footers, and margins through standard component structures rather than proprietary markup languages. The tool distinguishes itself by enabling server-side synthesis of dynamic data, which allows for the automated generation of personalized documents from live information sources. It maps web-standard styling and layout properties into the fixed-p

PyMuPDF is a comprehensive PDF manipulation library and document analysis tool. It serves as a text extraction tool, OCR engine, and image converter, providing a programmatic interface to edit, merge, split, and optimize PDF and Office documents. The project distinguishes itself through high-performance capabilities, including the use of C-bindings for low-level manipulation and parallelized page processing to accelerate workloads. It provides specialized conversion paths, such as transforming PDF content into Markdown for retrieval-augmented generation and large language model pipelines. It

pdf-lib is a JavaScript PDF manipulation library used for creating, modifying, and editing PDF documents programmatically. It functions as a cross-runtime tool compatible with Node, Browser, Deno, and mobile JavaScript environments. The library provides a programmatic interface for document editing and form generation. It supports building interactive PDF forms, populating existing fields with custom data, and flattening forms into static content. Its broader capabilities include generating new documents from scratch, rearranging or copying pages between files, and managing document metadata

This library provides a rendering engine that translates declarative component trees into PDF files. It enables the construction of complex document structures using a component-based architecture, allowing developers to define layout, styling, and content programmatically. The system operates across both browser and server-side environments, offering a unified interface for generating structured documents. The project distinguishes itself through a sophisticated layout and rendering pipeline that handles the complexities of document creation. It utilizes a flexbox-based engine for element po

This project is a digital book typesetter and PDF generator designed to transform Texinfo structured text into high-quality PDF documents. It functions as a compilation system that converts Texinfo source files into LaTeX code to enable professional academic typesetting. The system focuses on the precise control of typography and layout for technical manuals and books. It utilizes a source-driven document pipeline to manage font-family mapping and character metrics, ensuring visual consistency across the final publication. The toolset covers academic document typesetting and custom book publ

pdfme is a schema-based PDF generation engine and dynamic document builder. It provides a system for producing PDF documents by merging predefined templates with dynamic input data across different runtime environments. The project includes a browser-based WYSIWYG PDF editor and template designer, allowing for the arrangement of elements via a drag-and-drop interface. It distinguishes itself through a plugin-based architecture that enables schema extensions and custom rendering logic for new content types. The capability surface covers dynamic content generation, including variable placehold

OpenPDF is a Java library and document processor used for creating, editing, rendering, and encrypting PDF documents. It functions as a toolkit for generating new files from scratch, modifying existing document structures, and extracting text content. The project includes a dedicated engine for transforming HTML and CSS content into PDF documents by parsing markup and applying styles. It also provides a rendering engine to convert PDF pages into image formats for thumbnails and previews, alongside a security utility for protecting content via document encryption. The library supports the add

node-canvas is a server-side 2D vector graphics and image processing library for Node.js. It provides a server-side implementation of the HTML5 Canvas API using the Cairo graphics library as its rendering engine to draw shapes, text, and paths. The library enables the programmatic generation of dynamic images and the creation of scalable vector graphics and PDF documents. It supports the registration of custom and system fonts for typography rendering and allows for the import of image assets via local paths, buffers, data URIs, and remote URLs. Capabilities include low-level pixel manipulat

unioffice is a comprehensive document processing suite that provides a PDF document processor, an Open XML document library, a document security toolkit, and a document content extractor. It is designed to programmatically create, read, and modify Word, Excel, and PowerPoint files, as well as generate and edit PDF documents. The project is distinguished by its native language implementation of the Open XML standard, which removes native binary dependencies to simplify container deployments. It features advanced capabilities for digital document security, including hardware-based PDF signing,

PyPDF2 is a pure Python library for transforming, securing, and extracting data from PDF documents. It provides a comprehensive suite of tools to modify page layouts, manage document security, and retrieve embedded metadata without relying on external C libraries. The toolkit enables document assembly through the merging of multiple files and the splitting of documents into smaller parts. It also supports page-level transformations, including the ability to rotate pages and adjust visible crop areas. The library includes capabilities for security management via password-based encryption and

pdf2htmlEX is a tool that converts PDF documents into HTML while preserving the original text, fonts, and layout. It uses CSS positioning and font embedding to replicate the PDF's appearance in a browser, producing output that works without JavaScript. The tool can generate a single self-contained HTML file with all resources embedded, or split the document into separate HTML files per page for individual loading and navigation. The converter offers extensive control over the output, including the ability to embed fonts directly into the HTML using base64-encoded Data URIs, or keep them as se

Kepler.gl is a web-based geospatial visualization framework designed for rendering large-scale location datasets. It functions as a modular React mapping component that enables developers to embed interactive, high-performance geographic visualizations into web applications, serving as a comprehensive engine for building browser-based GIS dashboards. The library distinguishes itself through a highly extensible architecture that centers on centralized state management. By utilizing a predictable state-driven model, it allows for the programmatic control of map layers, filters, and viewport set

This project is a collection of programming language references and syntax cheat sheets designed for rapid developer onboarding. It serves as a library of code-based documentation that uses valid source code files to provide whirlwind tours of various language specifications. The project focuses on programming language learning by providing concise, commented code examples that explain core features and syntax in place. This approach enables developers to quickly grasp language-specific patterns, data types, and execution flow through a consistent reference format. The content covers a broad

This project is a document generation tool designed to create professional resumes and academic curriculum vitae using the LaTeX typesetting system. It provides a structured framework that separates raw career data from visual formatting, allowing users to compile structured source files into high-quality PDF documents. The system utilizes a template-driven layout engine and macro-based typesetting to enforce consistent visual constraints and typography. By isolating content from styling, it ensures that career histories, skills, and education are presented in a clean, standardized format sui

Gutenberg is a CSS print formatting framework and web-to-PDF layout engine. It provides a system for managing stylesheets, element visibility, and structural layout rules to ensure web content maintains a consistent visual structure when converted to physical documents or PDF files. The project manages print-specific rendering through a stylesheet manager that filters out non-essential interface elements and prevents the automatic expansion of URLs. It includes utilities to enforce the rendering of background colors and images, which browsers typically strip during the printing process. The

Snappy is a PHP library that acts as a wrapper for the wkhtmltopdf and wkhtmltoimage binaries. It provides a utility suite for transforming HTML strings and remote URLs into PDF documents and image snapshots. The project enables the generation of downloadable or streamable PDFs and the creation of web page thumbnails. It supports the aggregation of multiple separate URLs into a single unified PDF document. Users can adjust document output through configuration settings for JavaScript execution, cookie handling, background removal, and custom stylesheet application.

jsPDF is a document creation engine designed to generate professional PDF files through a unified programming interface. It functions as a cross-platform graphics library that enables the programmatic assembly of data into structured layouts, supporting both client-side generation within web browsers and server-side rendering in backend environments. The library utilizes a canvas-based drawing API that translates high-level geometric and text instructions into standardized PDF vector primitives. By employing a cross-platform runtime abstraction, it decouples document generation logic from env

Dompdf is a PHP library that functions as a document rendering engine, transforming HTML and CSS markup into portable document files. It operates by parsing web-based layout attributes and visual properties to generate static documents suitable for reports, invoices, or archival purposes. The library distinguishes itself by integrating a resource-fetching pipeline that retrieves external stylesheets and images to maintain visual fidelity. It also supports the execution of server-side scripts during the document creation process, allowing for the injection of dynamic data and custom logic into

Lottie is a JSON vector animation engine and cross-platform player that renders resolution-independent motion graphics. It functions as a runtime renderer that translates Adobe After Effects compositions into real-time animations using a JSON-based intermediate representation. The project distinguishes itself by enabling dynamic control over vector assets at runtime. It allows for the programmatic modification of animation properties, colors, and playback states through hierarchical key-paths and dynamic theming. This allows animations to respond to real-time application state changes and use

Two.js is a multi-backend graphics engine and vector drawing library that provides a unified API for creating two-dimensional graphics and animations. It functions as a renderer-agnostic abstraction layer, allowing users to generate vector shapes and paths that can be rendered via SVG, Canvas2D, or WebGL. The engine includes a scene graph manager to organize objects into hierarchical groups, enabling the propagation of collective transformations and parent-child relationships. It also features a headless graphics renderer, providing a node-based implementation for generating 2D drawings in se

pdfminer.six is a programmatic tool for extracting text, layout information, and metadata from PDF documents into machine-readable formats. It functions as a document parser that converts internal PDF objects and structures into accessible data objects for analysis. The project includes utilities for decrypting RC4 and AES encrypted files to enable content extraction. It also provides a layout analyzer to identify fonts, colors, and text locations to determine the organizational structure of pages. The system covers a broad range of extraction capabilities, including the retrieval of embedde

TinyXML-2 is a lightweight C++ library for parsing, manipulating, and generating XML documents. It functions as a UTF-8 XML processor that represents data through a hierarchical Document Object Model. The library provides tools for both DOM parsing and direct document generation via data streams. It includes capabilities for navigating the XML tree to locate specific elements, modifying attributes and content, and resolving character entities and Unicode numeric references into UTF-8 text. The processor includes syntax validation and diagnostic utilities that track line-number metadata for e

pypdf is a Python library for parsing, manipulating, and generating PDF documents. It provides high-level operations for document processing, such as merging multiple files into one or splitting a single document into smaller files. The project includes specialized tools for managing interactive elements, including the creation and modification of annotations, hyperlinks, and form fields. It also supports advanced metadata management, allowing for the extraction and modification of standard document properties and XML-based XMP metadata. Beyond basic structural changes, the library covers pa