Free video tools

Resize a video for Reels, TikTok and YouTube

Change a video to 9:16, 1:1, 4:5 or 16:9. Keep the whole picture on a blurred background, or fill the frame.

Choose a video

or drop it here · MP4, MOV or WebM up to 400 MB

Free, no sign-in. Your video never leaves your device.

Runs in your browser with FFmpeg (ffmpeg.wasm). Your video is never uploaded.

Questions

Which size should I use?
9:16 for Instagram Reels, Stories, TikTok and YouTube Shorts. 4:5 for the Instagram and Facebook feed. 1:1 for square posts and marketplaces. 16:9 for YouTube and websites.
Blurred background or crop?
A blurred background keeps your whole video and fills the empty space with a soft copy of it. A crop fills the frame but cuts off the edges.
Is it free?
Yes, completely free with no sign-in, no watermark and no daily limit.
Is my video uploaded?
No. The tool runs inside your browser with FFmpeg, so your video never leaves your device. Nothing is stored anywhere.
Why does the first run take a little longer?
The first time, your browser downloads the video engine (about 30 MB). After that it is ready for the rest of your visit.

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