Last updated: March 2026
Resize Any Video Online
Need to change a video's resolution? This free tool resizes any MP4, MOV, or WebM file to your target dimensions. Choose from standard presets like 1080p and 720p, or enter custom pixel values. The aspect ratio lock prevents distortion by automatically calculating the matching dimension.
All processing happens directly in your browser using FFmpeg WebAssembly. Your video is never uploaded to any server, making this tool safe for sensitive or private content.
Frequently Asked Questions
What resolution presets are available?
The tool includes presets for 4K (3840×2160), 1080p (1920×1080), 720p (1280×720), and 480p (854×480). You can also enter any custom width and height in pixels.
Will resizing distort my video?
Not if you keep the “Maintain aspect ratio” toggle enabled (it’s on by default). The tool automatically calculates the matching dimension to preserve the original proportions. Turn it off only if you intentionally want to stretch or squish the frame.
Can I upscale a video to higher resolution?
Technically yes — you can set dimensions larger than the original. However, upscaling does not add detail. The video will appear the same quality as the original, just with more pixels. For best results, resize to the same resolution or smaller.
What's the difference between cropping and resizing?
Cropping removes parts of the frame to change the aspect ratio. Resizing scales the entire frame to new dimensions, keeping everything visible. Use crop to reformat for different platforms, resize to change resolution.
Is my video uploaded to a server?
No. Everything processes locally in your browser using FFmpeg compiled to WebAssembly. Your video never leaves your device.