How to get the width and height of an image in Node.js?

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To get the width and height of an image in Node.js, we use the image-size package.

For instance, we write

const sizeOf = require("image-size");

sizeOf("images/funny-cats.png", (err, dimensions) => {
  console.log(dimensions.width, dimensions.height);
});

to call the sizeOf function to read the images/funny-cats.png image.

And we get the width and height from the dimensions parameter in the callback.

By John Au-Yeung