File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.
Automatically resize images on upload
This package can process uploaded images sent via AJAX requests. It comes with jQuery plugin that can upload the one or more images using AJAX requests. It can also display a preview of the selected images for upload, so the user can remove undesired images from the list of file to upload. The PHP class can validate the uploaded images to check for valid image file name extensions, size limits, and limit number of uploaded files.
Upload multiple images in sonata media and select as well
A WordPress plugin to resize your images before they are uploaded to your website (server), no need to use image editing software. You can drag+drop images straight from your digital camera right into WordPress.
Automatic extract the square central part of the uploaded image, and zoom to the specified size.
Upload profile images to users using PHP - Learn PHP backend programming. In a relationship with exercise Upload-files
Basic image upload and thumbnail management package for laravel 5+