What is the method for achieving the equivalent effect of "background-size: cover" on an <img>?

I am looking to ensure that an <img> has the smallest possible size without any empty spaces inside a div, while also being perfectly centered both horizontally and vertically. The image size may vary.

To better illustrate, here is an example: http://jsfiddle.net/q2c9D/

Additionally, similar to Mikel Ward's approach, I want the images to completely fill the div, so there is no visible background. Although the div currently has a black background for clarity, I require the images to be centered and take up the least amount of space possible without distorting them while filling the div.

javascriptjqueryhtmlcss

Answer №1

Check out my solution

In order to maintain the aspect ratio, I recommend setting the max-width property to 100%, and removing any specific height declarations.

img{
  max-width: 100%;
}

To easily center the image on the page, you can make use of a CSS framework like Flexbox or Grid, which eliminates the need for additional plugins or JavaScript functions.

Answer №2

You could experiment with setting min-width: 100% for the image element. Check out this demonstration to see how it works. It might slightly distort the image, but given its current size, the distortion may not be very noticeable. :)

Answer №3

To ensure the image is centered on the page, use the following CSS:

img{
    margin: 0 auto;
    position: relative;
    display: block;
}

You can easily position images on the page by wrapping them in a <div> element.

Answer №4

My method involves setting either the width or height to 100%.

<img height="100%" src=""/>

Answer №5

I managed to achieve the desired functionality using jQuery by implementing the following code:

$('img').each(function(){
    var imgWidth = $(this).width();
    var imgHeight = $(this).height();

    if (imgWidth > imgHeight) {
        $(this).css({
            "height": "100%",
            "width": "auto"
        });

        imgWidth = $(this).width();
        $(this).css("margin-left", -.5 * imgWidth + 50 + "px");

    } else if (imgHeight > imgWidth) {
        $(this).css({
            "width": "100%",                
            "height": "auto"
        });

        imgHeight = $(this).height();
        $(this).css("margin-top", -.5 * imgHeight + 50 + "px");

    } else {
        $(this).css({
            "height": "100%",
            "width": "100%"
        })
    }
})

};

window.onload = centerImage;<code>

The code retrieves the width and height of the image, ensuring that the smaller dimension is set to 100% and the larger one to auto for proper display. It then centers the image based on the resized dimensions. If the image is a square, both dimensions are set to 100%. This ensures that the image always fills the div and remains centered.

Thanks for the assistance. Hopefully, this code proves beneficial to others.

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