Change aspect ratio for Instagram, TikTok, YouTube, and more—all locally, with zero data leaving your device.
Drag & drop a video file
or click to browse (MP4, MOV, AVI, etc.)
Only video files are accepted
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YouTube, Widescreen
Standard landscape format
TikTok, Reels
Vertical mobile format
Instagram Posts
Square format
Instagram Portrait
Portrait posts
Traditional video tools upload your file to a server. Ours processes directly on your machine—no internet transfer.
Your video never touches our (or anyone else’s) servers. It stays inside your browser tab from start to finish.
Resize files of any size—1GB, 5GB, 10GB—because your own hardware does the work.
No queues, no waiting for other users. Resizing starts the moment you click the button.
Drag & drop any video file (MP4, MOV, AVI, etc.).
Select the target aspect ratio and background fill color.
Click "Resize Video". Processing happens locally via FFmpeg.
Get your resized video instantly—no watermarks, no subscriptions.
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