Video Resizer
Resize video to 1080p, 720p, 9:16, 1:1 or a custom size.
Free
Files stay on your device
Choose a video fileMP4, WebM or MOV · not uploaded
About this tool
Video Resizer changes a video’s width and height, for example to fit Reels, Shorts, TikTok or an Instagram square post. When the shape changes you can crop to fill or add black bars. Your files are processed on your own device. Nothing is uploaded to our servers.
How to use Video Resizer
- Choose a video file.
- Pick a size preset or a custom size, and how to handle the shape.
- Press “Resize video” and download the MP4.
Questions people ask
What size should I use for Reels, Shorts and TikTok?
1080×1920 pixels (9:16). For an Instagram feed post use 1080×1080 (1:1) or 1080×1350 (4:5).
What is the difference between crop and black bars?
“Crop to fill” scales the video until it covers the frame and cuts off the edges. “Fit with black bars” shows the whole video and fills the gaps with black.
Why are odd sizes rounded?
Most video encoders need even widths and heights, so a value like 721 is rounded to 722.
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