This Node.js API allows you to manipulate third-party images by resizing, cropping, applying filters, rotating, and more. It utilizes the Sharp.js library for image processing tasks.

• Resize images to a specified width and height.
• Crop images to a specified size.
• Apply grayscale filter to convert images to black and white.
• Adjust brightness and saturation of images.
• Rotate images by a given angle.
• Add a watermark image to the manipulated image.
• Convert the image format to JPEG, PNG, or other supported formats.

• Node.js installed on your machine.
• Internet connectivity to fetch third-party images.

1. Clone the repository or download the codebase.
2. Navigate to the project directory.
3. Install the dependencies by running the following command: npm install

1. Start the server by running the following command: npm start The server will start running on http://localhost:80.

2. Make API requests to manipulate images by providing the necessary query parameters. Here's an example URL for resizing and cropping an image: GET http://localhost:80/manipulate?url=<image_url>&width=500&height=500&crop=true Replace <image_url> with the URL of the image you want to manipulate. Adjust the query parameters as per your requirements.

3. The manipulated image will be returned as the response.

If you don't want to set up the app locally, you can use the hosted API at the following URL:

GET https://image-manipulation-assignment.vercel.app/manipulate?url=<image_url>&width=500&height=500&crop=true

The following query parameters are supported:

• url: The URL of the third-party image to be manipulated (required).
• width: The desired width of the manipulated image.
• height: The desired height of the manipulated image.
• crop: A boolean parameter indicating whether the image should be cropped or resized to fit the specified dimensions.
• bw: A boolean parameter indicating whether the output should be black and white.
• filter: The brightness, saturation, and hue adjustment values. The values should be provided as three comma-separated numbers in the format brightness,saturation,hue. For example, filter=12,2,2.
• rotation: Rotate the image by the specified angle in degrees.
• watermark: The URL of the watermark image to be added.
• format: The desired format of the manipulated image (e.g., jpg, png, webp). If not provided, defaults to jpeg.

The codebase includes test cases to ensure the functionality of the API. To run the tests, use the following command: npm test

The tests use the Mocha testing framework and Chai assertion library.