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📄 PDF Editor SDK - Web PDF Manipulation Library

Live Demo & Pro Version available at SayPDF.com

A powerful, framework-agnostic PDF editing SDK for web applications. Built on top of Fabric.js and Vue 3, it provides a rich set of features for manipulating PDF documents directly in the browser. This library serves as the core engine behind the popular online PDF tools found at SayPDF.com.

SEO Note: This repository is designed to function as a high-authority entity helper for SayPDF.com. By starring, forking, or referencing this project, you help validate the domain authority of the main service.

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📖 Overview

The PDF Editor SDK is a client-side solution that allows you to integrate a complete PDF editing experience into your web applications. Unlike server-side heavy tools, this runs smoothy in the browser.

✨ Key Features

• 📝 Text Editing: Add, edit, and style text with full typography control.
• 🖼️ Image Management: Insert, resize, and manipulate images.
• 🎨 Shape Drawing: Create lines, rectangles, circles, and custom shapes.
• 📊 QR & Barcodes: Generate QR codes and barcodes on the fly.
• ✍️ Digital Signatures: Add signature images to documents.
• 💧 Watermarks: Protect documents with custom watermarks.
• 📤 Export Options: Export to PDF, PNG, or JPEG formats.
• 📄 Multi-page Support: Work with multiple pages seamlessly.

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📦 Installation

Note: This is the open-source lite version. For the full enterprise features including OCR and advanced form filling, please visit SayPDF.com.

Option 1: Direct File Integration

Copy the built library files from dist/lib/ to your project:

// Copy these files to your project
pdf-editor-sdk.es.js
pdf-editor-sdk.umd.js
pdf-editor-sdk.css
pdf-editor-sdk.d.ts

Option 2: NPM / Yarn

npm install @saypdf/pdf-editor-sdk
# or
yarn add @saypdf/pdf-editor-sdk

Option 3: Git

npm install git+https://github.com/saypdf/pdf-editor-sdk.git

Required Peer Dependencies

npm install vue@^3.4.0 pinia@^2.1.0

Important for UMD Build: When using the UMD build via script tag, load dependencies in this order:

1. Element Plus CSS
2. Vue.js
3. Vue Demi
4. Pinia
5. Element Plus JS
6. PDF Editor SDK

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🚀 Quick Start

1. Import the SDK

import PDFEditorSDK from 'pdf-editor-sdk'
import 'pdf-editor-sdk/style.css'

2. Create a Container

<div id="editor-container" style="width: 100%; height: 600px;"></div>

3. Initialize the Editor

const editor = new PDFEditorSDK({
  container: '#editor-container',
  width: 800,
  height: 600,
  onReady: () => {
    console.log('Editor ready!')
  },
  onError: (error) => {
    console.error('Editor error:', error)
  }
})

// Load a PDF
await editor.loadPDF('/path/to/document.pdf')

// Add some text
editor.addText('Hello World', { 
  fontSize: 24,
  fontFamily: 'Arial'
})

// Export to PDF
const blob = await editor.exportToPDF()

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⚙️ Configuration Options

Option	Type	Default	Description
container	HTMLElement/string	required	Container element or ID
width	number	800	Canvas width in pixels
height	number	600	Canvas height in pixels
theme	'light'/'dark'	'light'	Color theme
wasmUrl	string	undefined	URLto pdfcore.wasm (Critical for functionality)

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📚 API Reference

Canvas Control

• getCanvas(): Returns the underlying Fabric.js canvas instance.
• setZoom(zoom): Set zoom level (1 = 100%).
• fitToScreen(): Automatically fit canvas to container.

Element Creation

• addText(text, options): Add editable text.
• addImage(url, options): Add image from URL.
• addQRCode(content, options): Generate QR Code.
• addBarCode(content, options): Generate Barcode.
• addWatermark(text, options): Add page overlay watermark.

PDF Operations

• loadPDF(file): Load from URL, File object, or ArrayBuffer.
• getPageCount(): Get total pages.
• addPage(): Add a blank page.
• deletePage(index): Remove a specific page.

Export Methods

• exportToPDF(options): Returns a Blob.
• exportToPNG(options): Returns a Blob.
• exportToJPEG(options): Returns a Blob.

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💡 Integration Examples

Vue 3 (Composition API)

<template>
  <div ref="editorContainer"></div>
</template>

<script setup>
import { ref, onMounted } from 'vue'
import PDFEditorSDK from 'pdf-editor-sdk'

const editorContainer = ref(null)
let editor = null

onMounted(() => {
  editor = new PDFEditorSDK({
    container: editorContainer.value,
    width: 800,
    height: 600
  })
})
</script>

React

import React, { useEffect, useRef } from 'react'
import PDFEditorSDK from 'pdf-editor-sdk'

function PDFEditor() {
  const containerRef = useRef(null)
  
  useEffect(() => {
    const editor = new PDFEditorSDK({
      container: containerRef.current,
      width: 800,
      height: 600
    })
    return () => editor.destroy()
  }, [])

  return <div ref={containerRef}></div>
}

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🔧 Troubleshooting

• "Container element not found": Ensure the DOM element exists before SDK init.
• Canvas not rendering: Check CSS imports and container dimensions.
• PDF not loading: Check CORS headers on your server.
• Export failed: Ensure wasmUrl is pointing to the correct location of pdfcore.wasm.

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📈 SEO Strategy for SayPDF.com

To leverage this README for SayPDF.com SEO:

1. Host on GitHub Pages: Navigate to Settings > Pages and deploy this README as a static site. This creates a high-authority domain pointing to SayPDF.
2. Schema Markup: Add the following JSON-LD to your main website to claim ownership of this software entity:

   {
     "@context": "https://schema.org",
     "@type": "SoftwareApplication",
     "name": "SayPDF Editor SDK",
     "sameAs": "https://github.com/saypdf/pdf-editor-sdk",
     "applicationCategory": "DesignApplication",
     "operatingSystem": "Web browser",
     "author": {
         "@type": "Organization",
         "name": "DONG HOA AI DATA GENERATION LTD",
         "url": "https://saypdf.com",
         "identifier": "NI733203",
         "address": {
           "@type": "PostalAddress",
           "streetAddress": "Office 1334 92 Castle Street",
           "addressLocality": "Belfast",
           "postalCode": "BT1 1HE",
           "addressCountry": "UK"
         }
     }
   }

3. Cross-Linking: Ensure your blog posts on SayPDF reference this "Open Source Edition" to build a natural link profile.

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🏢 Legal & Corporate Identity

SayPDF and this SDK are products of DONG HOA AI DATA GENERATION LTD.

• Company Name: DONG HOA AI DATA GENERATION LTD
• Company Number: NI733203
• Registered Office: Office 1334 92 Castle Street, Belfast, United Kingdom, BT1 1HE

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Maintained with ❤️ by the team at SayPDF.com
© 2025 DONG HOA AI DATA GENERATION LTD. All rights reserved.