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Creating uniform, responsive space for multi-element components such as cards or calendar dates.

Creating uniform, responsive space for interactive data visualizations or SVG animations.

Creating intrinsic placeholder containers for images, videos, and embeds to prevent re-layout when the items load and take up space.Creating responsive iframes, where they are 100% of a parent's width, and the height should remain a specific viewport ratio.Some examples of where maintaining aspect ratio become important are:

With the advent of responsive design, maintaining aspect ratio has been increasingly important for web developers, especially as image dimensions differ and element sizes shift based on available space. One is 634 x 951px while the other is 200 x 300px. The most common aspect ratios for photography are 4:3 and 3:2, while video, and more recent consumer cameras, tend to have a 16:9 aspect ratio. Aspect ratio #Īspect ratio is most commonly expressed as two integers and a colon in the dimensions of: width:height, or x:y.

Now, there's a more straightforward way to do this with the new aspect-ratio property launching in Chromium 88, Firefox 87, and Safari Technology Preview 118. Summary: Maintaining a consistent width-to-height ratio, called an aspect ratio, is critical in responsive web design and for preventing cumulative layout shift.