How do you determine the dimensions of a background image?

My div is a perfect square, measuring 200 pixels by 200 pixels.

The background image I've chosen to use is larger at 500 pixels by 500 pixels.

I'm searching for a method to ensure that the entire background image fits neatly within the confines of the div. While CSS3 allows for resizing, I require a solution that will work with older browsers as well.

Any suggestions or guidance would be greatly appreciated.

Answer №1

Is there a method to ensure that the entire background image fits perfectly within the div?

You can utilize the background-size property for this purpose.

While CSS3 can handle this, I'm seeking a solution compatible with older browsers.

There isn't any other standardized approach for scaling a background image.


To support older versions of Internet Explorer, you can use the non-standard filter property along with AlphaImageLoader.

/* Not tested */
background-image: url(images/someimage.png);
background-resize: cover;
filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/someimage.png',sizingMethod='scale')";
-ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/someimage.png',sizingMethod='scale')";

Alternatively, as a workaround, you could employ an <img> element and position it absolutely behind the content. Keep in mind that this will be a content image hack rather than an elegant solution.

Answer №2

Assume that the div you are working with has an id of "myid".

The image being used is sized at 500x500.

Check out a demo here: http://jsfiddle.net/abdennour/rhPDx/

div#myid{
   width: 200px;
    height:200px;

  background: url('http://px6.streetfire.net/0001/72/25/1952752_600.jpg') 
                0% 0% 
                no-repeat;
  background-size: 200px 200px;


}

Answer №3

To get the desired effect, try using background-size:100% 100%; on your div

I hope this solution works for you

Answer №4

It's not possible to resize your image using the background image attribute.

However, there is a clever workaround for this. You can place your background image within your div and apply absolute positioning to it. Remember that your div must also have a relative position attribute.

Once you've set this up, you can easily resize your image using CSS2.

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