How to Generate Images from Text in Node.js

Node.js is a powerful platform for building web applications and server-side scripts. In this tutorial, we will learn how to generate images from text using Node.js.

Step 1: Install dependencies

First, you need to install the necessary dependencies for generating images from text. You can use the ‘canvas’ module, which provides a canvas API for Node.js. You can install it using the npm package manager:

npm install canvas

Step 2: Create a Node.js script

Next, create a Node.js script that will generate images from text. You can use the following code as an example:

        const { createCanvas, loadImage } = require('canvas');
        const fs = require('fs');
        
        const width = 400;
        const height = 200;
        
        const canvas = createCanvas(width, height);
        const ctx = canvas.getContext('2d');
        
        ctx.font = '30px Arial';
        ctx.fillText('Hello, World!', 50, 100);
        
        const buffer = canvas.toBuffer('image/png');
        fs.writeFileSync('output.png', buffer);
    

Step 3: Run the script

Save the script in a file, for example ‘generateImage.js’, and run it using Node.js:

node generateImage.js

Now, you should see a new image file named ‘output.png’ in your project directory with the text ‘Hello, World!’ written on it.

Conclusion

Generating images from text in Node.js is a simple task with the canvas module. You can customize the image by changing the font size, font family, position, and color. Feel free to experiment with different settings to create unique and visually appealing images from text.