@embedpdf/pdfium

PDFium WebAssembly for the web platform. This package provides a powerful JavaScript interface to PDFium, enabling high-quality PDF rendering and manipulation directly in web applications.

Documentation

For complete documentation, examples, and API reference, please visit:

Official Documentation

What is PDFium?

PDFium is an open-source PDF rendering engine originally developed by Foxit Software and later released as open source by Google. Written in C++, it's the same engine that powers PDF viewing in Chrome and numerous other applications. This package brings native-quality PDF capabilities to the browser through WebAssembly, without requiring any server-side processing.

Features

• High-fidelity rendering of PDF pages
• Text extraction and search
• Form filling and manipulation
• Annotation support
• Digital signature verification
• PDF modification and creation

Installation

# npm
npm install @embedpdf/pdfium

# pnpm
pnpm add @embedpdf/pdfium

# yarn
yarn add @embedpdf/pdfium

# bun
bun add @embedpdf/pdfium

Basic Usage

import { init, WrappedPdfiumModule } from '@embedpdf/pdfium';

const pdfiumWasm =
  'https://cdn.jsdelivr.net/npm/@embedpdf/pdfium/dist/pdfium.wasm';

let pdfiumInstance = null;

async function initializePdfium() {
  if (pdfiumInstance) return pdfiumInstance;

  const response = await fetch(pdfiumWasm);
  const wasmBinary = await response.arrayBuffer();
  pdfiumInstance = await init({ wasmBinary });

  // Initialize the PDFium extension library
  // This is required before performing any PDF operations
  pdfiumInstance.PDFiumExt_Init();

  return pdfiumInstance;
}

// Usage
async function renderPdf() {
  const pdfium = await initializePdfium();
  // Use pdfium to load and render PDFs
  // See documentation for detailed examples
}

Learn More

Check out our comprehensive documentation at embedpdf.com/docs/pdfium for:

• Detailed API reference
• Code examples
• Best practices
• Advanced usage

License

This package is licensed under the MIT License - see the LICENSE file for details.

It also bundles PDFium in WebAssembly form,
which is licensed under the Apache License, Version 2.0.