Here is the comparison between Gulp and Grunt:

Gulp vs. Grunt: Similarities?

Both these tools act as the task runners which use the Node.js, an open-source Javascript based runtime environment that is designed to develop tools and applications. Grunt and Gulp, use a set of plugins to accomplish whatever tasks you use them for. The Grunt uses Gruntfile.js and Gulp uses Gulpfile.jas.
 Here is the list of some common tasks which you can accomplish with both these tools:
 Compressing image files

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