How to make images scale proportionally with css

Using max-width and max-height or object-fit attributes, you can scale the image proportionally in CSS and maintain the aspect ratio of the image.

How to use CSS to scale images proportionally

Get straight to the point and answer the question:

To make the image scale proportionally in CSS, you can use the max-width and max-height properties, or use the object-fit property.

Detailed answer:

1. Use the max-width and max-height properties

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

Using this method, the image will automatically scale proportionally to fit the size of the container while maintaining the aspect ratio of the image.

2. Use the object-fit attribute

img {
  object-fit: contain;
}

object-fit The attribute has the following values:

• contain: The image is scaled proportionally to completely fill the container while maintaining the aspect ratio of the image.
• cover: The image is scaled proportionally to completely fill the container, but the image may be cropped.
• fill: The image is stretched to fill the container, ignoring the aspect ratio of the image.

Note:

• object-fit attribute requires browser support and may not be available in older browsers .

• When using CSS to scale images, you need to pay attention to the following points:

  • Scrolling may cause image quality to decrease.
  • If the aspect ratio of the image is different from that of the container, the image may be deformed.
  • The original size of the image should be used whenever possible to obtain the best quality.

The above is the detailed content of How to make images scale proportionally with css. For more information, please follow other related articles on the PHP Chinese website!