Image Aspect Ratio Guide: 16:9, 4:3, and 1:1
Understand common aspect ratios for video, social media, print, and web. Calculate correct dimensions without cropping your subject.
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Tags: image, aspect-ratio, resize
Image Aspect Ratio Guide: 16:9, 4:3, 1:1, 3:2, and More Aspect ratio is one of those concepts that seems simple until you're debugging why an image looks stretched in a layout, or why your video thumbnail is getting cropped differently on mobile versus desktop. Once you understand what aspect ratio means and how it interacts with containers, image sizing, and CSS, you'll avoid a whole category of visual problems. This guide explains what aspect ratio is, the common ratios you'll encounter, how to choose the right one for each use case, and how to handle aspect ratios correctly in CSS. What Aspect Ratio Means Aspect ratio is the proportional relationship between an image's width and its height, expressed as width:height. A 1920×1080 image has an aspect ratio of 16:9 — for every 16 units of…
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