PDF Merger

This project is a simple web application that allows users to upload and merge multiple PDF files into a single PDF. The application is built using Node.js, Express.js, and the pdf-merger-js library, with a user-friendly frontend powered by HTML and Bootstrap.

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Features

• Upload multiple PDF files.
• Dynamically merge PDFs into a single file.
• Download the merged PDF directly from the browser.
• Responsive UI using Bootstrap.

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Prerequisites

Before running the project, ensure you have the following installed:

• Node.js (v14 or later)
• npm (Node Package Manager)

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Installation

1. Clone the repository:

   • git clone https://github.com/your-username/pdf-merger.git
   • cd pdf-merger

2. Install dependencies:

   • npm install

3. Folder structure:

   . ├── public/ ├── templates/ │ └── PDF.html ├── uploads/ ├── merge.js ├── server1.js ├── README.md ├── package.json └── package-lock.json

4. Create required directories: Ensure the following directories exist

• uploads/ (for temporary file storage)
• public/ (for storing the merged PDF)

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Usage

1. Start the server:

• node server1.js

2. Access the application: Open your browser and go to:

• http://localhost:3000

3. Merge PDFs:

• Select multiple PDF files (no file limit).
• Click the Submit button.
• The merged PDF will be available for download at: http://localhost:3000/static/merged.pdf

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Code Overview:

merge.js Handles the PDF merging logic using the pdf-merger-js library. The function dynamically adds PDFs and saves the merged file to the public/ directory.

server1.js

Express.js server: Manages routes and file uploads using multer.

Routes:

• Serves the HTML form.
• /merge: Processes uploaded PDFs and merges them.
• Static files: Hosts the merged PDF for download in the public/ directory.

PDF.html

• A simple, responsive HTML form built with Bootstrap to allow users to upload files and trigger the merge proces

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Dependencies

• Express: Web framework for Node.js.
• Multer: Middleware for handling multipart/form-data, used for file uploads.
• PDF Merger JS: Library for merging PDF files.
• Bootstrap: Frontend framework for styling.

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Uploaded files remain in the uploads/ directory after merging.