Kraken

Kraken is one of the most popular online tools to optimize images. It offers a powerful API and a user-friendly online web interface.

Kraken's API is easy to use.

You just need to provide the URL of the image you want to optimize and the API will take care of the rest.

The API will return the optimized image in a few seconds.

Kraken's online web interface is also user-friendly.

You can drag and drop images into the interface or provide the URL of the image you want to optimize.

The interface will show you the size and quality of the original image and the optimized image.

You can also download the optimized image.

Kraken is a free online tool and it offers a paid API.

The paid API offers more features, such as the ability to optimize multiple images at the same time.