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- DictionaryAs·pect ra·tio/ˈaˌspekt ˈrāSHō/
noun
- 1. the ratio of the width to the height of an image or screen.
- 2. the ratio of the span to the mean chord of an airfoil.
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Definition and Usage. The aspect-ratio property allows you to define the ratio between width and height of an element. If aspect-ratio and width properties are set, the height will follow in the defined aspect ratio. To better understand the aspect-ratio property, view a demo. Tip: Use the aspect-ratio property in responsive layouts where ...
May 25, 2016 · Aspect ratio is generally used to determine the relative horizontal and vertical sizes of computer graphics. For example, if a computer graphic has an aspect ratio of 3:1, this means the width of the graphic is three times of the height of the image. Aspect ratio plays an important role in resizing.
Sep 6, 2023 · An aspect ratio is the proportional relationship between an image’s width and height. In photography, this is extremely important for print sizes, different places you may want...
- Overview
- Syntax
- Examples
- Browser compatibility
- See also
The aspect-ratio CSS property allows you to define the desired width-to-height ratio of an element's box. This means that even if the parent container or viewport size changes, the browser will adjust the element's dimensions to maintain the specified width-to-height ratio. The specified aspect ratio is used in the calculation of auto sizes and some other layout functions.
At least one of the box's sizes needs to be automatic in order for aspect-ratio to have any effect. If neither the width nor height is an automatic size, then the provided aspect ratio has no effect on the box's preferred sizes.
This property is specified as one or both of the keyword auto or a . If both are given, then If the element is a replaced element, such as , then the given ratio is used until the content is loaded. After the content is loaded, the auto value is applied, so the intrinsic aspect ratio of the loaded content is used.
If the element is not a replaced element, then the given ratio is used.
Exploring aspect-ratio effects with fixed width
In this example, the width of the elements has been set to 100px and height to auto. Since the width value is fixed here, the aspect-ratio property affects only the height of the elements to maintain the specified width-to-height ratio.
Fallback to natural aspect ratio
In this example we are using two elements. The first element does not have its src attribute set to an image file. The following code sets 3/2 as the preferred aspect ratio and auto as a fallback. Note how the first image without replaced content keeps the 3/2 aspect ratio, while the second image after the content is loaded uses the image's natural aspect ratio.
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•Image aspect-ratio: preventing jank
•Designing an aspect ratio unit for CSS
Apr 12, 2020 · Aspect ratio definition. What is aspect ratio? Aspect ratio is the relationship between width and height of an image. It's usually written as two numbers separated by a colon, as in 16:9. It can also be written with an “x” between the numbers. Example 1: Netflix’s go-to aspect ratios are 16:9 and 2:1.
Dec 27, 2021 · In simple terms, the aspect ratio of a movie is how wide the frame of the movie is versus how tall it is, usually expressed as a ratio. For example, most TVs and computer...
Feb 17, 2015 · Aspect Ratio Defined. Simply, an aspect ratio is the proportional relationship between the width and height of a rectangle. When working with aspect ratios in most modern design projects, an aspect ratio will have a horizontal orientation, because most screens are wider than they are tall. (And we design on screens and often for screens.)
