How to Implement a PHP AJAX Image Upload with Progress Bar to Show How Much of a Large File Was Uploaded By Manuel Lemos Many sites need to process image files uploaded by users using Web forms.

When the image files are large, uploading may take a lot of time.

In that case, it would be better to show a progress bar to let the users know how is the image file upload process going.

This package shows how to use AJAX support and the progress event to offer a percentage of the file uploaded to the server.