Video Resizer
Resize a video to a new width and height in your browser — great for social media sizes — free, fast and private.
Choose a video to begin.
Your result will appear here.
How to use Video Resizer
- Choose a video file.
- Enter the new width and height in pixels.
- Click Process Video to re-record at the new size.
- Download the resized video.
Honest limit: the resized video is re-recorded to WebM in your browser (browsers cannot natively re-encode MP4), so output is a .webm file.
Frequently Asked Questions
Is the Video Resizer free?
Yes, it is 100% free with no sign-up. Your files and data stay in your browser.
What sizes can I resize to?
Any width and height up to 1920 px. Popular presets include 1280×720 and 720×1280 for vertical video.
Is my file uploaded to a server?
No. This tool runs entirely in your browser — your file is never uploaded.
Will resizing change the aspect ratio?
Yes — the video is stretched to the exact size you enter. Keep the original ratio to avoid stretching.