Which aspect ratio is best for TikTok and Instagram Reels?

9:16 Vertical is the standard vertical fullscreen ratio for TikTok, Reels, and YouTube Shorts.

What is the difference between "Fit" and "Fill"?

"Fit" shows the entire video without cropping by adding subtle borders. "Fill" scales the video to occupy every pixel without black bars.

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Resize Video

맞춤 및 채우기 모드를 사용하여 TikTok(9:16), YouTube(16:9), Instagram(1:1 또는 4:5)의 비디오 화면비를 변경하세요.

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Transform landscape videos into vertical 9:16 for TikTok, Reels, and Shorts

Support for 9:16 Vertical, 16:9 Landscape, 1:1 Square, and 4:5 Feed formats

Two framing modes: "Fit with Letterbox" or "Fill & Crop" to avoid distortion

High 30fps canvas rendering pipeline with crisp image quality

100% In-browser conversion — no file uploads, completely private

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학습 곡선 없이 빠른 3단계를 통해 결과를 얻으세요.

Upload Video

Select or drag your video file into the upload zone.

Select Social Aspect Ratio

Choose 9:16 for TikTok/Reels, 16:9 for YouTube, or 1:1 for Instagram feeds.

Resize & Export

Click "Resize Video" and download your newly formatted video instantly.

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Resize Video

Drag & Drop your files here

이 도구를 사용하는 방법

Upload Video

Select Social Aspect Ratio

Resize & Export

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Compress Video

Trim Video

Video to GIF

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Resize Video

Drag & Drop your files here

이 도구를 사용하는 방법

Upload Video

Select Social Aspect Ratio

Resize & Export

자주 묻는 질문

관련 도구

Compress Video

Trim Video

Video to GIF