Aspect Ratio, Every Setting: 9:16, 4:5, 1:1 — Fit, Fill and Background

Every setting of the free Aspect Ratio tool on a real landscape clip: 9:16 for TikTok, Reels and Shorts, 4:5 for the Instagram feed, 1:1 for a square post, 16:9 for YouTube; Fit with a blurred background vs Fill with an anchor; black, colour, image or mirror behind; and a 720 export of 14 seconds under 3 MB. Nothing is uploaded.

The Aspect Ratio tool, every setting, on a real landscape clip of a dog shaking its head. The ratio is the platform: 9:16 for TikTok, Reels and Shorts, 4:5 for the Instagram feed, 1:1 for a square post and 16:9 for YouTube. Fit keeps the whole picture and fills around it — with a blur of the same video, so it never looks like black bars — while Fill crops to the edge for a closer frame, and the anchor decides which part survives the crop. With Fit you choose what goes behind: black, a colour, your own image, or a mirror of the edges. At 720 on the long edge, the 14-second clip comes out 404×720 and under 3 MB — sharp on any phone. Everything runs in your browser, so the video is never uploaded.

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