How to Keep Aspect Ratio of Images in CSS

How to Keep Aspect Ratio of Images in CSS

Ferenc Almasi β€’ 2020 November 18 β€’ πŸ“– 1 min read

If you ever wanted to resize an image disproportionately without losing aspect ratio in CSS β€” these two properties will help you out:

/* Center an image in itself without losing aspect ratio */
img {
    width: 300px;
    height: 300px;
    object-fit: none;
    object-position: 50% 50%;
    background: blue;
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It uses object-fit with object-position. By default, object-fit takes the value of fill, which scales the image disproportionately if the container doesn't match the aspect ratio of the image. object-position on the other hand, sets the position of the image inside the container. To better understand how they work, take a look at object-fit taking up different values:

object-fit: fill; (default)
object-fit: contain;
object-fit: none;

The original size of the images is 200x300, but they are set to 200x200 through CSS.

With object-fit set to none on every image, observe how object-position changes the position of the image inside itself:

object-position: left top;
object-position: 50% 50%; (dead-center)
object-position: right bottom;

The original size of the image is 100x100px, but they are set to 200x200 through CSS.

How to keep image aspect ratio in CSS
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