Video resizer
Fit your video to the ratio TikTok, Reels, Shorts, Instagram and YouTube expect. Fill empty space with a blurred copy of the video or a color, or crop to fill the frame.
Free · No sign-up · Runs in your browser
Your browser can't encode video. Use a current version of Chrome, Edge, Safari or Firefox.
Your files are never uploaded; everything runs in your browser.
How to use
- Choose your video.
- Pick the target ratio: 9:16, 4:5, 1:1 or 16:9.
- Choose a blurred background, a solid color or crop; check the live preview.
- Press Convert video and download the MP4.
Highlights
- 9:16 (1080×1920), 4:5 (1080×1350), 1:1 (1080×1080) and 16:9 (1920×1080) output.
- Blurred background, solid color or crop to fill.
- Live preview and optional audio removal.
- Your video is never uploaded; everything runs in your browser.
Frequently asked questions
What is a blurred background?
The video itself is enlarged to cover the frame and blurred behind the original, which stays fully visible in the middle. It's the most common way to share landscape video in a vertical format without cropping.
What does Crop do?
The video is enlarged to cover the target frame completely and the overflowing edges are cut off. It works well when the subject is centered; things at the edges may be lost.
Which browsers does it work in?
The tool uses the browser's built-in video encoding (WebCodecs). It works in current versions of Chrome, Edge, Safari and Firefox.
Is my video uploaded to a server?
No. Every frame is redrawn in your browser and the video is encoded on your device.
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