This will cause the API to use lossy compression to resize the file without touching the image size. Of course, it is possible to reduce the image after an upload via PHP, but this can be very resource consuming and should therefore be avoided in most cases. APIs such as Abstract API's Free Image Resizing API allows you to upload a URL for resize and specify a lossy option without width and height parameters. One of the easiest ways to reduce an image's file size before uploading is to use lossy compression to decrease the quality of the image without changing the size. wphandleupload() is used to handle the upload. Basically, an avatar upload field gets added to user profiles. How Do I Reduce File Size Before Uploading? I am looking for a way to resize an image client-side with JavaScript (really resize, not just change width and height). I'm now using the Simple Local Avatars plugin to let users upload an avatar. Thanks to modern browser API we can also reduce unnecessary upload bandwidth compressing images client-side, before uploading them. Jimp provides many tools to manipulate images, including resizing, cropping, color correction, filters, and more. The latest Ive tried is the Hermite-resize script. If you need to work with images in Node, we recommend you use Jimp, a Node image processing library. This API accepts a POST request with a URL to an image to be resized and returns a URL to the resized image, hosted in an S3 bucket. You could also use a third-party API like Abstract API's Free Image Resizing API. If you don't upload professional photos, that should not be a problem. But you should keep in mind several things if you resize image on the client: You will have only 8bits per channel (jpeg can have better dynamic range, about 12 bits). One of the best client-side libraries available for image resizing is Pica, which provides an API to resize Canvas elements, Images and Image Bitmaps directly in the browser. In modern browser you can use canvas to load/save image data. There are many ways to resize an image in JavaScript.
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