Resize video online
Change your video resolution for any platform or screen size. Pick a preset or enter custom dimensions. No upload needed.
Drop your video here
or click to browse — MP4, MOV, AVI, WEBM, MKV
Max: 500MB • 100% Private
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Frequently Asked Questions
Will resizing reduce my video file size?
Yes. Lowering resolution reduces file size significantly. Going from 4K to 1080p typically cuts file size by 60–75%.
Will it change my video quality?
Reducing resolution reduces detail. The output will be sharp at the new size but cannot be upscaled back without quality loss.
What is the best resolution for Instagram?
1080×1080 for square posts, 1080×1920 for Stories and Reels. Use the Platform tab to apply these automatically.
Can I resize without changing the aspect ratio?
Yes. All resolution presets maintain your original aspect ratio. Platform presets may crop the edges to fit the target frame.