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PDF.js - JavaScript PDF Reader
A powerful open-source JavaScript library developed by Mozilla, enabling rendering of Portable Document Format (PDF) files directly within modern web browsers without relying on native browser support or external plugins. It focuses on performance and accurate rendering.
JavaScript
Added on 2025年7月6日51,182
Stars10,362
ForksJavaScript
LanguageProject Introduction
Summary
PDF.js is an open-source project that aims to create a general-purpose, web standards-based platform for parsing and rendering PDFs.
Problem Solved
Traditionally, displaying PDFs in web browsers required plugins (like Adobe Reader) or reliance on inconsistent native browser implementations. This created compatibility issues and a poor user experience. PDF.js solves this by providing a robust, purely web-based solution for PDF display.
Core Features
Client-Side PDF Rendering
Renders PDF pages as images or vectors using HTML5 Canvas, providing high fidelity.
Text Selection and Extraction
Allows selection and extraction of text content from PDF documents within the browser.
Integrated Viewer Application
Includes a built-in viewer application demonstrating the library's capabilities and providing a ready-to-use solution.
Asynchronous Processing with Web Workers
Utilizes Web Workers to perform CPU-intensive parsing and rendering off the main thread, ensuring a responsive user interface.
Tech Stack
JavaScript
HTML5 (Canvas)
CSS3
Web Workers
Use Cases
PDF.js can be integrated into various web-based applications and platforms where displaying PDF content is required.
Inline PDF Display in Web Applications
Details
Embedding PDF documents directly within a web page or application interface, providing a seamless user experience.
User Value
Avoids forcing users to download PDFs or rely on browser plugins, keeping them within the application context.
Custom Document Viewer Development
Details
Building custom document viewers with specific features like annotations, form filling, or collaboration tools, using PDF.js as the rendering engine.
User Value
Provides a flexible foundation for creating tailored PDF viewing experiences beyond basic display.
PDF Previews
Details
Displaying previews of uploaded PDF files in document management systems or email clients before opening or downloading.
User Value
Allows users to quickly glance at document content without a full download, saving time and bandwidth.
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