![]() ![]() Let imgInput = document. Let's write the code to resize a user-uploaded image on the browser side 300x300. It will decrease its quality and make it 600kb to 700kb if you set rate to 30. The first argument image can be created using the Image() constructor, as well as using any existing element. We upload pictures and then squeeze it in this tutorial, you will learn how to compress images on the client-side and when user upload, it will take less time (if slow internet) and space on the server. The result should be a JavaScript bundle containing the code from index.js, and an optimized version of image.png. import Resizer from react-image-file-resizer Resizer.imageFileResizer ( file, //is the file of the new image that can now be uploaded. Uses the Browsers native canvas. Resizing images in browser using canvas is relatively simple.ĭrawImage function allows us to render and scale images on canvas element. you can use react-image-file-resizer library to compress image. The HTML element is used to draw graphics, on the fly, via JavaScript. Image resizing in JavaScript - Using canvas element This is the preferred way to resize images without degrading the user experience programmatically.Īlso, we will learn how you can do this without needing to set up any libraries or backend servers. ![]() ![]()
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