Specifically, it provides everything required to resize an image. Although typically used for animation, game graphics, data visualization, and real-time video processing, you can also employ it as an image manipulation tool. While in a React context we used a library to do the heavy lifting for us, knowing the HTML API is the only prerequisites for this approach. Otherwise, you can continue following this tutorial and build the demo application step by step. ![]() You can clone the GitHub repository that supports this article by launching the following command: git clone Follow this step-by-step tutorial to achieve the following result on CodeSandbox: Resizing Images Using Let’s see how to resize an image with Vanilla JavaScript. As you can imagine, both of these consequences fall on end-users – we want to avoid this. As we have previously explained you might also want to compress such images. Uploading large photos is time-consuming and may cost money in bandwidth. That is because the quality of the images and their file sizes have been increasing for years.įor example, when letting users upload an image, you should always consider resizing it before uploading it. Resizing an image has become increasingly important. Thanks to the HTML element, this is a reasonably easy task to accomplish. In this article, you will learn how to resize an image in JavaScript, without using any external library. ![]() To make the demo simply, I only prepare two of them which are placed at the right and bottom sides: They are placed absolutely at the four sides of the original element. Assume that we want to turn the following element to draggable element: Resize me įirst, we need to prepare some elements that indicate the element is resizable.
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