Video Resize
Resize your videos to any dimensions in your browser.
Drop your Video file here
or click to browse · max 500 MB
Settings
128k for speech · 192k for general use · 320k for music
FFmpeg WASM (~25MB) will be downloaded on first use and cached by your browser.
Video Resizer
Resize videos to standard resolutions (4K, 1080p, 720p, 480p) or custom dimensions. Reduce video dimensions for web embedding, social media, or to decrease file size.
What is it used for?
- Downscaling 4K footage to 1080p for easier sharing
- Resizing videos for specific platform requirements
- Reducing file size by lowering resolution
- Creating different resolution versions for adaptive streaming
Step-by-Step Guide
- Upload your video file
- Select a preset resolution (4K, 1080p, 720p, 480p) or choose Custom
- For custom resolution, enter width and height
- Click 'Convert to .MP4'
- Download the resized video
How it works
Upload a video, select the target resolution or enter custom dimensions, and click Convert. FFmpeg scales the video while maintaining aspect ratio (unless custom dimensions are specified).
Tips & Best Practices
- 1080p is the sweet spot for quality vs file size for most uses
- Downscaling from 4K to 1080p can reduce file size by 60-75%
- Use custom dimensions for specific platform requirements
Frequently Asked Questions
Will aspect ratio be preserved?
Preset resolutions (4K, 1080p, etc.) set the width and auto-calculate height to preserve aspect ratio. Custom mode uses your exact dimensions.
Can I upscale videos?
Yes, but upscaling doesn't add detail. A 720p video upscaled to 4K will look the same as the original 720p version.
Privacy & Security
This tool uses FFmpeg compiled to WebAssembly (WASM). The WASM binary (~25MB) is downloaded from a CDN on first use and cached by your browser. All file processing happens locally on your device - your files are never uploaded to any server. This makes it safe for sensitive, private, or confidential media files. Large files may take longer to process depending on your device's CPU and available memory.