Simplify any width and height to its cleanest ratio, or keep a ratio intact while resizing images and video. Instant, accurate and private.
Reduce any width:height pair to its lowest terms, e.g. 1920:1080 → 16:9.
Given one dimension and a ratio, get the exact matching dimension.
Covers common presets like 16:9, 4:3, 21:9, 1:1 and 9:16 for any platform.
All math happens locally. Your sizes never leave the browser.
Converters and helpers for designers and developers.