Video Resizer
Resize video resolution to 1080p, 720p, 480p, 360p or custom size. Secure browser-based processing
About Video Resizer
Video Resizer is a free online tool to easily change video file resolution (width and height). It uses ffmpeg.wasm technology to process videos entirely in your browser, eliminating the need for server uploads and ensuring complete privacy with no data sharing.
In addition to 4 standard presets — 1080p (Full HD), 720p (HD), 480p (SD), and 360p — you can specify any custom resolution. The aspect ratio lock feature ensures distortion-free resizing. Preset-based bitrate control optimizes file size for social media posting, web streaming, and device-specific optimization.
Supports major video formats including MP4, WebM, and MOV. Instant browser-based usage with no installation or registration required. Perfect for optimizing videos for YouTube, Instagram, Twitter, TikTok and other platforms.
How to use Video Resizer
- Drop your video file or click to select it. Supports MP4, MOV, WebM and more
- Select a preset: 1080p (YouTube quality), 720p (Instagram/Twitter), 480p (WhatsApp light), 360p (low bandwidth), or enter custom dimensions
- Toggle aspect ratio lock. Preset-based bitrate optimization is automatically applied
- Click 'Resize Video'. Download your optimized video when processing completes
Benefits of Video Resizer
- All processing happens in your browser: no server uploads means complete privacy for sensitive content
- Presets for YouTube, Instagram, Twitter, TikTok, WhatsApp: custom dimensions for any platform
- Automatic bitrate optimization: smaller file sizes for storage and fast uploads to streaming platforms
- Aspect ratio lock prevents distortion: save time resizing for multiple devices at once
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