This code provides a fully functional PDF editor with these features:

Combine multiple PDF files into one

Extract specific page ranges from a PDF

Overlay a watermark PDF on all pages

Rotate all pages by specified angle

Key Features

Pure client-side implementation (no server required)

Uses library for PDF manipulation

Real-time PDF preview in iframe

Download capability for edited files

Error handling and validation

Responsive Bootstrap design

Cross-browser compatibility

Limitations

File size limited by browser memory (typically up to 500MB)

Complex operations might be slow for large files

Some advanced PDF features might not be supported

All-in-One PDF Editor Tool

Transform your document workflow with our browser-based PDF Editor, designed to handle essential PDF modifications without compromising security. 

This intuitive tool empowers users to merge multiple files, split documents at precise pages, and apply customizable watermarks—all directly in your web browser. With its clean interface and drag-and-drop functionality, even beginners can effortlessly manage PDFs while maintaining full control over their sensitive files.  

Key Features at Your Fingertips

1. Merge & Organize: Combine reports, contracts, or portfolios into a single polished document.  

2. Surgical Splitting: Extract specific pages or divide large files using exact page numbers.  

3. Smart Watermarking: Protect intellectual property with adjustable text overlays in any color.  

The tool includes real-time previews, cross-device compatibility, and instant downloads, eliminating the need for complex software or subscriptions.  

Why Choose Our PDF Editor Tool?

Unlike cloud-based alternatives, your files never leave your device—all processing happens locally for military-grade security. Perfect for professionals handling confidential data, students organizing research, or small businesses managing digital assets, this editor requires no installations, registrations, or payments. Its lightweight design ensures rapid processing even on low-end devices, making advanced PDF manipulation accessible to everyone, everywhere.

Key Features:

Core PDF Operations:

Merge multiple PDFs into one

Split PDF at specific page number

Add text watermark with custom color

Preview uploaded PDFs with page counts

UI Features:

Modern card-based design

Drag & drop file upload

Responsive layout (works on mobile)

Visual feedback during operations

Error handling with alerts

Progress indicators

Technical Specifications:

Uses PDF-Lib library for PDF manipulation

Pure client-side processing (no server required)

Bootstrap 5 for styling

Font Awesome icons

File handling via Blob API

How to Use:

Upload PDF files using the button or drag & drop

Choose operation (Merge, Split, or Watermark)

For Split: Enter page number to split at

For Watermark: Enter text and select color

Processed file will automatically download

Browser Support:

Modern browsers (Chrome, Firefox, Edge, Safari)

Requires JavaScript enabled

Not compatible with Internet Explorer

This tool provides basic PDF editing functionality while maintaining user privacy since all processing happens in the browser - no files are uploaded to any server.