Free Online Bulk Video Resizer
Quickly adjust video dimensions and aspect ratios in bulk. Scale your MP4 and WebM videos for YouTube, Instagram, or website feeds.
Drop files here. 100 MB maximum file size
Drag or click to upload your logo
300+ formats supported
We support more than 25600 different conversions between more than 300 different file formats. More than any other converter.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert" button. Wait a little for the process to complete. We aim to do all our conversions in under 1-2 minutes.
In the cloud
All conversions take place in the cloud and client-side processing, consuming minimal capacity from your computer.
Custom settings
Most conversion types support advanced options. For example with a video converter you can choose quality, aspect ratio, codec and other settings, rotate and flip.
Security guaranteed
We delete uploaded files instantly and converted ones after 24 hours. No one has access to your files and privacy is 100% guaranteed. Read more about security.
All devices supported
GlobeOptimiser is browser-based and works for all platforms. There is no need to download and install any software.
How to use this tool
- Upload your video files (MP4, WebM, MOV, etc.).
- Specify the target Width and Height dimensions in pixels.
- Run processing to scale and download your formatted videos.
Frequently Asked Questions
Does resizing videos reduce their quality?
Only if you upscale a low-resolution video to a much larger canvas. Scaling down preserves clarity while shrinking the file size.
Which video dimensions should I use for social media?
Use 1080x1920 for vertical videos (TikTok, Instagram Reels) and 1920x1080 for standard widescreen video players.
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