Image Optimization Tools
Image Size Calculator
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Estimated File Sizes
Dimensions:
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Aspect Ratio:
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Megapixels:
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Estimated File Size:
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100 images would be:
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Recommended Use:
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Common Image Sizes
About Image Size Calculation
Understanding image dimensions and file sizes helps you:
- Plan storage requirements
- Optimize website performance
- Choose appropriate dimensions for different uses
- Estimate bandwidth needs
Key Concepts
- Dimensions: Width and height in pixels (e.g., 1920×1080)
- Aspect Ratio: Proportional relationship between width and height
- Megapixels: Total pixel count (width × height in millions)
- File Size: Storage space required, affected by format and quality
How File Size is Estimated
File size depends on several factors:
- Dimensions: More pixels generally mean larger files
- Format: Different formats have different compression methods
- JPEG: Best for photos, adjustable quality
- PNG: Lossless, good for graphics
- WEBP: Modern format with excellent compression
- GIF: Limited to 256 colors, good for simple animations
- Quality: Higher quality means larger files (for lossy formats)
- Image Content: Complex images with more detail compress less
Technical Note
These are estimates based on typical compression ratios. Actual file sizes may vary depending on image content. For example, a solid color image will compress much better than a detailed photograph at the same dimensions and quality settings.