Open-source alternatives to React Pdf

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

Browser image compression is a JavaScript utility designed to reduce image file sizes directly within the web browser. By adjusting dimensions and quality settings locally, the library minimizes bandwidth usage and storage requirements before files are uploaded to a server. The library maintains interface responsiveness by offloading heavy image manipulation tasks to background worker threads. It manages large image files using memory-efficient binary objects and utilizes the browser canvas application programming interface to re-encode data into formats such as JPEG or WebP. Users can contr

uni-app is a cross-platform framework for building mobile and web applications from a single Vue.js codebase. It provides a multi-platform app compiler and a cross-platform UI library to ensure consistent behavior and visual presentation across different operating systems. The project features a native API bridge and a universal plugin system that wrap native SDKs into a unified interface, allowing developers to access device hardware and operating system functions. It utilizes a specialized rendering engine and native performance compilation to bypass standard document overhead and achieve h

wkhtmltopdf is a command-line utility that renders web pages into PDF documents or image files. It functions as a headless browser engine, utilizing the Qt WebKit rendering environment to process HTML, CSS, and JavaScript into visual representations suitable for server-side tasks. The tool distinguishes itself by translating standard web styling rules into physical page dimensions and layout constraints, allowing for the creation of structured documents from web-based source files. It supports the generation of automated tables of contents and provides granular control over document layout, i

AndroidPdfViewer is a user interface library for Android applications that provides a view for displaying PDF documents. It utilizes the PdfiumAndroid rendering engine to decode PDF files into bitmaps for display on mobile devices. The library includes built-in support for zooming, scaling, and scroll navigation. It allows for the loading of PDF data from various document sources and provides controls to adjust rendering quality and visual fidelity. The component handles mobile document navigation through features such as page filtering, hyperlink detection, and customizable scroll handles.

qutebrowser is a keyboard-driven web browser built on the Qt framework and the Chromium-based rendering engine. It provides a minimalist interface that prioritizes content visibility by removing traditional toolbars and visual clutter, relying instead on a command-line interaction model for navigation and browser control. The browser is designed for users who prefer to manage web tasks through rapid keystrokes rather than mouse-based graphical interfaces. It includes an integrated document viewer that renders PDF files directly within the application window, removing the need for external sof

SumatraPDF is a lightweight, multi-format document viewer designed for rendering PDF, eBook, and comic book files within a unified interface. It functions as both a graphical reading environment and a command-line document processor, enabling users to automate file conversion, merging, and extraction tasks without requiring a graphical interface. The application distinguishes itself through a single-executable binary distribution that utilizes direct-to-GDI rendering and memory-mapped file access to maintain high performance and minimal memory overhead. Users can personalize their workspace b

This project is a markdown preview extension that provides an advanced renderer for markdown files. It functions as an interactive markdown notebook by executing embedded code snippets and displaying the results directly within the preview pane. The system includes a markdown-to-PDF converter for professional document generation and a slide deck generator that transforms markdown text into presentation visuals. The tool supports technical rendering for mathematical formulas and diagrams, while maintaining side-by-side content editing through synchronized scrolling between the source text and

Frontend-Interview-Questions is an educational knowledge base and study guide designed for technical interview preparation, software engineering job roles, and core web development concept review. It provides structured resources covering frontend topics, language fundamentals, and browser mechanics. The repository explores fundamental concepts including JavaScript runtime behavior, asynchronous execution, lexical scoping, closures, hoisting, and variable declaration comparisons. It also examines architectural topics such as browser rendering pipelines, document object model manipulation, net

epub.js is a JavaScript library for parsing and displaying EPUB files within a web browser. It functions as a digital publication layout engine and rendering library that enables the creation of browser-based eBook readers with support for both paginated spreads and continuous scrolling. The project provides a specialized framework for interactive eBook annotation and precise location tracking. It uses Content Fragment Identifiers to represent text positions as unique strings, allowing for stable bookmarking, text highlighting, and note-taking. The library covers a broad range of capabilitie

This repository is a comprehensive collection of reference implementations and sample libraries for the Universal Windows Platform. It provides practical examples of how to use Windows Runtime APIs to build cross-device applications, including detailed guidance on XAML-based declarative user interfaces and DirectX-integrated rendering. The project distinguishes itself by providing a wide array of hardware integration suites, covering low-level communication with USB, Serial, I2C, SPI, and GPIO peripherals. It includes specialized implementations for mixed reality holographic rendering, advanc

This project is a Laravel integration for the Dompdf rendering engine, providing a tool to convert HTML and CSS templates into PDF documents. It functions as a wrapper that allows Laravel applications to generate downloadable or streamable PDF files from web-standard content. The library includes specialized tools for producing PDF/A-3b compliant documents intended for long-term electronic preservation. This archival capability includes the ability to embed XML metadata and attachments, which supports electronic invoicing standards for digital business transactions. The software covers a bro

mdBook is a documentation build system and static site generator designed to compile collections of Markdown files into structured, navigable web-based books. It provides a comprehensive framework for managing technical documentation, featuring a hierarchical table of contents, integrated full-text search, and automated build processes that transform source content into ready-to-deploy HTML websites. The project distinguishes itself through a highly modular pipeline architecture that supports custom preprocessors and swappable rendering backends. This allows authors to intercept and modify co

Xournalpp is a digital note-taking and annotation application designed for capturing natural handwriting and sketching. It functions as a vector graphics editor that treats individual strokes, shapes, and text as discrete, editable objects, allowing users to refine and manipulate their work after it has been placed on the canvas. The application provides a specialized environment for overlaying handwritten notes and drawings onto existing PDF documents. By utilizing pressure-sensitive stylus input, it simulates a natural writing experience, while its layered canvas composition enables users t

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

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

OpenSign is a self-hosted, open-source document signing platform that enables users to send, sign, and manage PDF documents with digital certificates and encryption. It functions as a complete e-signature solution, allowing organizations to run their own signing service on private infrastructure while maintaining full control over their data and document workflows. The platform supports sequential multi-signer workflows, where documents can be sent to multiple recipients in a predefined order, with each signer receiving an email-based one-time password for verification before accessing the do

DesktopEditors is an office suite application designed for creating and editing text documents, spreadsheets, and presentations across different operating systems. It serves as an OOXML compatible editor, ensuring that files are read and written according to Office Open XML standards for cross-platform document exchange. The suite functions as a collaborative document platform featuring real-time co-authoring, version tracking, and integrated communication tools. It also acts as an AI-powered document assistant and PDF editor, providing capabilities for content generation, automated spreadshe

zotero-pdf-translate is a translation extension for Zotero that converts PDF text, annotations, and bibliographic metadata into target languages using external services. It functions as an academic PDF translator and a bibliographic metadata translator, enabling the conversion of research papers, EPubs, item titles, and abstracts. The tool distinguishes itself as a multi-provider translation client that allows users to connect to various language models and APIs using custom secret keys. It features a translation comparison view that renders outputs from multiple services side-by-side to eval

Pretext is a canvas-based text layout engine designed to calculate precise text dimensions and line breaks for custom rendering. It serves as a rich text measurement tool and a cross-browser typography normalizer, enabling the determination of pixel-perfect widths and heights for mixed inline content without relying on browser CSS. The project distinguishes itself through its ability to handle complex typography and dynamic layouts. It implements language-specific segmentation rules for CJK and Hangul scripts and corrects emoji width variances between DOM and canvas rendering. Additionally, i

react-canvas is a library for drawing user interface elements to a hardware-accelerated canvas instead of the standard document tree. It provides a system for rendering components to a canvas to improve rendering speed and frame rates. The project includes a layer manager to organize visual elements and cache expensive drawing operations. It features a text engine capable of rendering multi-line text with precise character metric measurements and truncation, as well as a virtualized list system that processes only visible items to maintain smooth scrolling. Interaction is handled through a c

This project is a document editing framework designed for web applications, providing a visual interface for modifying files while maintaining compatibility with standard document formats. It functions as both a browser-based rich text editor and a headless processing engine, allowing for the programmatic parsing, manipulation, and generation of document files in server-side environments. The framework distinguishes itself through its integration with external intelligence models, exposing document manipulation functions as standardized tool calls. This enables automated content generation, d

Crawlee-python is a web crawling framework for building scalable scrapers using Python. It serves as a comprehensive tool for web scraping automation, providing a system to extract structured data from websites using both lightweight HTTP requests and headless browser automation. The framework is distinguished by its anti-bot evasion capabilities, which include browser fingerprint impersonation and tiered proxy rotation to bypass detection systems and solve challenges such as Cloudflare. It also incorporates artificial intelligence for autonomous website navigation and schema-based data extra

This project is a PDF data extraction tool and document preprocessor designed to convert PDF files into structured formats such as Markdown, JSON, and HTML. It functions as an OCR document parser for scanned files, an accessibility automator for generating PDF/UA compliant metadata, and a loader for AI orchestration frameworks like LangChain. The software distinguishes itself through specialized handling of complex document elements, including the conversion of mathematical formulas into LaTeX and the generation of natural-language descriptions for charts and images. It utilizes recursive seg

pdfminer is a Python library for parsing PDF files to extract text, analyze layouts, decrypt content, and convert documents into HTML or XML formats. It functions as a text extraction engine and layout analysis tool designed to retrieve characters and words while preserving the structural organization of the original document. The project provides utilities for converting PDF content into structured HTML or XML to maintain visual layout and a decryption tool for unlocking restricted documents using encryption keys. It identifies the positions and groupings of text elements to reconstruct page

Camelot is a Python library and processing engine designed to extract tabular data from PDF documents. It converts unstructured tables into machine-readable formats such as CSV, JSON, and Excel. The project provides specialized toolsets for different document types, using line detection for ruled tables and whitespace analysis for borderless tables. It includes an optical character recognition system to recover structured data from image-based scanned PDFs that lack a digital text layer. The library handles complex document layouts, including encrypted files, rotated pages, and tables that s

tchMaterial-parser is an educational PDF downloader and content parser designed to extract digital textbooks from the National Smart Education Platform. It functions as a batch document downloader that retrieves multiple educational resources in bulk, utilizing automated file naming based on extracted titles and metadata. The system includes a PDF bookmark generator that creates navigational tables of contents and internal jump-links within downloaded files. It resolves remote preview links into direct downloadable addresses and employs token-based authentication to authorize API requests for