Responsive Layout automatically fits according the screen size of visitors. So, the same web design can be used on desktops and mobile devices as well. While creating the responsive design, we need to take care of images. We can not use large size image for mobile users. So, we need to do some extra work to make images fit on all kind of devices. Most of the developers resolve this problem by having different size of a image for different devices. And use image according to screen size. But this can be time consuming. We can solve this problem with Responsive Img.
Responsive Img is a combination of jQuery plugin and a PHP image pre-processor. It enables the page to change the src attribute of images according to the container width and PHP auto generates the new resized images. Images are only created first time when the page is requested. Same image is used for other similar kind of requests.
It uses pixel ratios and resize images according to container size. Thus you can add responsive images to your website without recreating images. You not need to add any kind of HTML or CSS markup. Just upload js and pho file of the plugin on your server and then add the js file in the header of he page.