This API allows you to merge two PDF files into a single PDF file. It is built using Node.js, Express, and pdf-lib.

• PDF Merger API
  • Table of Contents
  • Setup
    • Prerequisites
    • Installation
  • Usage
  • API Endpoint
  • Error Handling
  • License

• Node.js (version 12 or later)
• npm (Node package manager, comes with Node.js)

1. Clone the repository:

   git clone <repository-url>
   cd <repository-name>

2. Install the required dependencies:

   npm install

3. Create the necessary directories:

   mkdir uploads

1. Start the server:

   npm start

   The server will start running on port 5000 (or the port specified in the environment variable PORT).

2. Use a tool like Postman or curl to send a POST request to the /merge endpoint with two PDF files.

   Example curl command:

   curl -F "pdf1=@path/to/your/first.pdf" -F "pdf2=@path/to/your/second.pdf" http://localhost:5000/merge -o merged.pdf

   This command sends a POST request with two PDF files and saves the merged PDF as merged.pdf.

• Description: Merges two PDF files into one.
• Request: Multipart/form-data with two files.
  • pdf1: The first PDF file.
  • pdf2: The second PDF file.
• Response:
  • On success: The merged PDF file is returned as a download.
  • On error: A JSON response with an error message.

curl -F "pdf1=@path/to/first.pdf" -F "pdf2=@path/to/second.pdf" http://localhost:5000/merge -o merged.pdf

• If exactly two PDF files are not uploaded, the server responds with a 400 status code and a message: "Please upload exactly 2 PDF files."
• If an internal server error occurs, the server responds with a 500 status code and a JSON message: "something went wrong - check all inputs."