What is the best way to enlarge a thumbnail using CSS?

Question

What is the best way to enlarge a thumbnail using CSS?

Is there a way to resize an image without distortion?

I am struggling with resizing a 70px thumbnail image to 200px X 165px while maintaining the aspect ratio. Currently, when I set the width to 200px and height to 165px, it stretches the image.

Below is the code snippet:

CSS

.listing-img-div {
    width: 200px;
    height: 165px;
}

.listing-img {
    border: 1px solid black;
    margin-top: 5px;
    border: 1px solid #ddd;
    width: 100%;
    height: 100%;
}

HTML/PHP

echo '<div class="listing-img-div">';
  echo '<img class="listing-img" src="'.$img.'" alt="'.$title.'">';                                                     echo '</div>';

html image css

Answer 1

Answer №1

When dealing with non-SVG or Vector Type images, stretching them can lead to a loss in quality. This is especially true for formats like JPG, BMP, and PNG, which are considered lossy.

To resize an image while maintaining its aspect ratio, you can use the following CSS:

img {
   height: 165px;
   width: auto;
   max-width: 200px;
   max-height: 165px;
}

Alternatively, you can achieve the same result with:

img {
   height: auto;
   width: 200px;
   max-width: 200px;
   max-height: 165px;
}

Explanation:

You should specify either a fixed width or height, depending on your priority. The remaining parameter should be set to "auto" to allow for automatic scaling. It's important to include additional attributes for resizing purposes, as older browsers may not support properties like max-width and max-height. In such cases, having a fallback fixed size is recommended.

Answer 2

When dealing with non-SVG or Vector Type images, stretching them can lead to a loss in quality. This is especially true for formats like JPG, BMP, and PNG, which are considered lossy.

To resize an image while maintaining its aspect ratio, you can use the following CSS:

img {
   height: 165px;
   width: auto;
   max-width: 200px;
   max-height: 165px;
}

Alternatively, you can achieve the same result with:

img {
   height: auto;
   width: 200px;
   max-width: 200px;
   max-height: 165px;
}

Explanation:

You should specify either a fixed width or height, depending on your priority. The remaining parameter should be set to "auto" to allow for automatic scaling. It's important to include additional attributes for resizing purposes, as older browsers may not support properties like max-width and max-height. In such cases, having a fallback fixed size is recommended.

Answer 3

Answer №2

Another option is to simply set the width to auto and the height to 100%.

img {
   width: auto;
   max-height: 100%;
}

It has been pointed out by others that unless an image is a vector or an SVG, there will always be some loss of quality.

Answer 4

Another option is to simply set the width to auto and the height to 100%.

img {
   width: auto;
   max-height: 100%;
}

It has been pointed out by others that unless an image is a vector or an SVG, there will always be some loss of quality.

What is the best way to enlarge a thumbnail using CSS?

Answer №1

Answer №2

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