Is this tool really offline?

Yes. All processing happens locally in your browser. Your files never leave your device.

Yes, completely free with no registration required.

Absolutely. No files are uploaded to any server. Everything stays on your device.

Video Resizer

Choose from 4K (3840x2160), 1080p (1920x1080), 720p (1280x720), 480p (854x480), 360p (640x360), or enter a custom width.

Resize video resolution completely offline in your browser

No Upload 100% Private Free

You might also need:

Supports MP4, MOV, AVI, MKV, WebM and more

Preset Resolution

Maintain aspect ratio (height will be calculated automatically)

Optimize videos for specific devices - smartphones, tablets, or small screens.

Reduce resolution to create smaller files for easier sharing and storage.

Optimize for web delivery and faster loading times on websites.

Choose from 4K, 1080p, 720p, 480p, 360p, or enter a custom width. Height is automatically calculated to maintain aspect ratio.

Lower resolutions mean lower file sizes and faster playback, but some quality is lost. Choose the right resolution for your needs.

Resizing requires re-encoding. Time depends on original resolution and file size - typically 2-15 minutes per file.