Resize Video Online Free - Change Video Resolution & Dimensions

Resize videos online for free with Toolzilla's professional video resizer. Convert to 4K, 1080p, 720p, 480p, or custom dimensions. 100% browser-based, no uploads.

Click to upload or drag and drop

VIDEO/* • Maximum file size 500 MB

Why Use Toolzilla Video Resizer?

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Multiple Resolutions

Resize to 4K, 1080p, 720p, 480p, 360p or custom dimensions. Perfect for any platform or device.

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Aspect Ratio Lock

Maintain original aspect ratio automatically or set custom dimensions for specific needs.

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100% Private

Your videos never leave your device. All resizing happens locally in your browser offline.

Fast Processing

Instant video resizing with no upload or download wait times. Process files in seconds.

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Works Everywhere

Use on any device - desktop, tablet, or mobile. No app installation required.

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High Quality Output

Professional-grade video resizing with optimized quality for any resolution.

How to Resize Video Online - 3 Easy Steps

1

Upload Your Video File

Click the upload zone or drag and drop your video file (MP4, AVI, MOV, etc.). Maximum file size is 500MB for optimal processing.

2

Choose Dimensions

Select a quick preset (4K, 1080p, 720p, 480p, 360p) or enter custom width and height. Toggle aspect ratio lock as needed.

3

Resize and Download

Click "Resize Video" to process your file instantly. Preview the result, then download your resized video file.

Frequently Asked Questions About Video Resizing

Everything you need to know about resizing videos online with Toolzilla

Frequently Asked Questions

Everything you need to know about this tool