Understanding Aspect Ratios: A Guide to Image Proportions and Sizing
Aspect ratios define the proportional relationship between an image's width and height, expressed as width:height. For instance, a square image has a 1:1 ratio, while a portrait image might have a 2:3 ratio.
Understanding Basic Aspect Ratios
- Square (1:1): Width equals height (e.g., 500px × 500px)
- Portrait (2:3): Height is 1.5 times the width (e.g., 500px × 750px)
- Landscape (3:2): Width is 1.5 times the height
- Widescreen (16:9): Common for videos and modern displays
Cropping Images to Specific Ratios
Two main approaches:
- Use preset shapes in built-in image editors
- Custom crop using third-party software for specific ratios
Tips for Maintaining Image Quality
- Crop the shorter side based on the longer side
- Avoid scaling the longer side to prevent blurriness
- Use an aspect ratio calculator for precise measurements
Two stacked ceramic plates
Stack of white plates
Page Banners and Product Images
- Banners adapt to browser width; no fixed ratio
- Product images should maintain consistent ratios for uniformity
- Consider template-specific requirements
Video Aspect Ratios
- Most video players use 16:9 ratio
- Uploaded videos maintain original file ratio
- Embedded videos follow hosting service thumbnail ratio
Percentage-Based Ratios
- 100% = Square format (1:1)
- Below 100% = Landscape format
- Above 100% = Portrait format
- Calculate exact ratios: height ÷ width × 100
Skyscraper lit up at night
Modern blue glass building reflecting
Illuminated office building at night
Office windows at dusk
Modern office facade
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