Video Resizer
Resize video resolution completely offline in your browser
Loading Video Processing Engine
This tool uses FFmpeg.wasm for video processing. The first time you use it, it will download the processing engine (~25MB). This only happens once and enables powerful offline video conversion.
Drop your video here
Supports MP4, MOV, AVI, MKV, WebM and more
Resolution Settings
Resized Video
Why Resize Videos?
Device Compatibility
Optimize videos for specific devices - smartphones, tablets, or small screens.
Smaller File Sizes
Reduce resolution to create smaller files for easier sharing and storage.
Web Streaming
Optimize for web delivery and faster loading times on websites.
Frequently Asked Questions
What resolutions are available?
Choose from 4K, 1080p, 720p, 480p, 360p, or enter a custom width. Height is automatically calculated to maintain aspect ratio.
Will my video quality be affected?
Lower resolutions mean lower file sizes and faster playback, but some quality is lost. Choose the right resolution for your needs.
How long does resizing take?
Resizing requires re-encoding. Time depends on original resolution and file size - typically 2-15 minutes per file.