Scale image to fit a bounding box

Question

Is there a css-only solution to scale an image into a bounding box (keeping aspect-ratio)? This works if the image is bigger than the container:

img {
  max-         


        

Answer 1

This example to stretch the image proportionally to fit the entire window. An improvisation to the above correct code is to add $( window ).resize(function(){});

function stretchImg(){
    $('div').each(function() {
      ($(this).height() > $(this).find('img').height()) 
        ? $(this).find('img').removeClass('fillwidth').addClass('fillheight')
        : '';
      ($(this).width() > $(this).find('img').width()) 
        ? $(this).find('img').removeClass('fillheight').addClass('fillwidth')
        : '';
    });
}
stretchImg();

$( window ).resize(function() {
    strechImg();
});

There are two if conditions. The first one keeps checking if the image height is less than the div and applies .fillheight class while the next checks for width and applies .fillwidth class. In both cases the other class is removed using .removeClass()

Here is the CSS

.fillwidth { 
   width: 100%;
   max-width: none;
   height: auto; 
}
.fillheight { 
   height: 100vh;
   max-width: none;
   width: auto; 
}

You can replace 100vh by 100% if you want to stretch the image with in a div. This example to stretch the image proportionally to fit the entire window.

Answer 2

.boundingbox {
    width: 400px;
    height: 500px;
    border: 2px solid #F63;
}
img{
    width:400px;
    max-height: 500px;
    height:auto;
}

I'm editing my answer to further explain my soluton as I've got a down vote.

With the styles set as shown above in css, now the following html div will show the image always fit width wise and will adjust hight aspect ratio to width. Thus image will scale to fit a bounding box as asked in the question.

<div class="boundingbox"><img src="image.jpg"/></div>

Answer 3

This helped me:

.img-class {
  width: <img width>;
  height: <img height>;
  content: url('/path/to/img.png');
}

Then on the element (you can use javascript or media queries to add responsiveness):

<div class='img-class' style='transform: scale(X);'></div>

Hope this helps!

Answer 4

Are you looking to scale upwards but not downwards?

div {
    border: solid 1px green;
    width: 60px;
    height: 70px;
}

div img {
    width: 100%;
    height: 100%;
    min-height: 500px;
    min-width: 500px;
    outline: solid 1px red;
}

This however, does not lock aspect-ratio.

Answer 5

Today, just say object-fit: contain. Support is everything but IE: http://caniuse.com/#feat=object-fit

Answer 6

I have used table to center image inside the box. It keeps aspect ratio and scales image in a way that is totally inside the box. If the image is smaller than the box then it is shown as it is in the center. Below code uses 40px width and 40px height box. (Not quite sure how well it works because I removed it from another more complex code and simplified it little bit)

.SmallThumbnailContainer {
  display: inline-block;
  position: relative;
  float: left;
  width: 40px;
  height: 40px;
  border: 1px solid #ccc;
  margin: 0px;
  padding: 0px;
}

.SmallThumbnailContainer {
  width: 40px;
  margin: 0px 10px 0px 0px;
}

.SmallThumbnailContainer tr {
  height: 40px;
  text-align: center;
}

.SmallThumbnailContainer tr td {
  vertical-align: middle;
  position: relative;
  width: 40px;
}

.SmallThumbnailContainer tr td img {
  overflow: hidden;
  max-height: 40px;
  max-width: 40px;
  vertical-align: middle;
  margin: -1px -1px 1px -1px;
}

<table class="SmallThumbnailContainer" cellpadding="0" cellspacing="0">
  <tr>
    <td>
      <img src="https://www.gravatar.com/avatar/bf7d39f4ed9c289feca7de38a0093250?s=32&d=identicon&r=PG" width="32" height="32" alt="OP's SO avatar image used as a sample jpg because it is hosted on SO, thus always available" />
    </td>
  </tr>
</table>

Note: the native thumbnail size in this snippet is 32px x 32px, which is smaller than its 40px x 40px container. If the container is instead sized smaller than the thumbnail in any dimension, say 40px x 20px, the image flows outside the container in the dimensions that are smaller than the corresponding image dimension. The container is marked by a gray 1px border.