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Resize dimensions while keeping the same ratio.
Keep images and videos proportional. Enter your original width and height to see the simplified ratio (like 16:9), then scale to a new width or height and get the matching dimension automatically.
Runs entirely in your browser — nothing is uploaded.
It's the proportional relationship between width and height, written like 16:9. Keeping it constant stops images and videos from looking stretched.
The width and height are divided by their greatest common divisor — so 1920×1080 simplifies to 16:9.