📐 Video Resizer
How to use: Choose a video, pick a size such as 9:16 for Reels and Shorts, 1:1 square or 16:9 YouTube, choose bars or crop, then press Resize video and download the MP4.
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About the Video Resizer
Every platform wants a different shape: tall 9:16 for Instagram Reels, YouTube Shorts and WhatsApp Status, square or 4:5 for Instagram posts, and wide 16:9 for YouTube. The ToolSandook Video Resizer changes your video to the exact size in one step.
Choose Show whole video to keep everything and add black or white bars, or Fill the frame to crop the edges so there are no bars. The result is an MP4 ready to upload, made in your browser without uploading your video.
How to use the Video Resizer
- Choose the video.
- Pick the size, such as 9:16 for Reels and Shorts.
- Choose bars or crop, and the bar colour.
- Press Resize video and download the MP4.
Features
- Presets for Reels, Shorts, Status, Instagram and YouTube
- Bars (black or white) or crop to fill
- Exact pixel sizes like 1080×1920
- Keeps the sound
- Private: no upload
Frequently asked questions
What size is an Instagram Reel or YouTube Short?
1080×1920 pixels, a 9:16 vertical video. Pick the first option.
Should I add bars or crop?
Bars keep the whole picture but add empty space. Crop fills the screen but cuts the edges, so use it when the action is in the middle.
Will my landscape video work as a Reel?
Yes. With bars it sits in the middle of a tall frame; with crop the centre part fills the screen.
What size is best for an Instagram feed post?
1080×1350 (4:5) takes up the most space in the feed. 1080×1080 square also works.
Related tools
- Video Compressor – Shrink videos to a smaller MP4.
- Rotate Video – Rotate or flip a video 90° or 180°.
- Video Trimmer – Cut a video to just the part you want.
- YouTube Thumbnail Resizer – Any image to 1280×720 under 2 MB.