Online Video Resizer for Web

Customize your video size in seconds

Online Video Resizer is a free browser-based utility that adjusts the dimensions of your videos so they display properly on popular social networks. It’s designed for quick resizing to suit platforms like Instagram, Twitter and Facebook without requiring desktop software.

Platforms it targets

• Instagram (includes presets for multiple common aspect ratios)
• Twitter
• Facebook

Key features at a glance

• Fast, user-friendly interface that’s simple to navigate
• Minimal quality loss during conversion, preserving the original look
• A small set of preset sizes (notably several common Instagram formats)
• Web-based, so no downloads are required

Performance and limitations

The tool does a good job keeping video quality intact, but processing can be slow at times — especially during periods of heavy demand. If you need instant results, expect occasional wait times.

When this is a good choice

If social platforms are automatically cropping or compressing your uploads and you want a quick way to control framing and output size without sacrificing clarity, this web app is a useful option to try.

Suggested free alternative

YouTube (free)