Image resizing and cropping are common and necessary operations in many applications. Whether it's for creating thumbnails, adapting images to different resolutions, or focusing on a specific portion of an image, Node.js offers robust tools to perform these tasks efficiently. In this chapter, we will learn how to resize and crop images using Sharp and Jimp.

Image Resizing with Sharp

Resize to Specific Size

To resize an image to a specific size (e.g., 300x300 pixels), you can use the resize method of Sharp:

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Maintain Aspect Ratio

You can maintain the aspect ratio of an image while resizing it:

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Image Cropping with Sharp

Crop to Specific Area

To crop an image to a specific area, you can use the extract method:

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Image Resizing with Jimp

Resize to Specific Size

Using Jimp to resize an image is straightforward:

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Maintain Aspect Ratio

To maintain the aspect ratio while resizing with Jimp:

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Image Cropping with Jimp

Crop to Specific Area

You can crop an image in Jimp using the crop method:

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Advanced Example: Resizing and Cropping in a Complete Solution

We can combine resizing and cropping operations in a single pipeline. Suppose we want to resize an image to a larger size and then extract a specific portion of it.

With Sharp

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With Jimp

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With these techniques, you will be able to resize and crop images efficiently in your Node.js applications, adjusting images to the specific needs of your project.