Social Media Video Resizer
Fit any video to Instagram, TikTok or YouTube Shorts with auto-blur background.
Upload Video
Drag & drop or browse
Key Features
Browser-Based Processing
Resize videos directly in your browser without uploading. Perfect for privacy.
Multi-Platform Support
Presets for Instagram, TikTok, YouTube Shorts, and more.
Auto-Blur Background
Automatically fills empty space with a blurred background for a professional look.
Privacy First
Your videos never leave your device. 100% secure client-side processing.
Easy to Use
Simple 3-click process: Upload, Select Platform, Download.
Fast Processing
Resize your videos in seconds using advanced WASM technology.
Supported Formats
Works with all major video formats:
MP4, MOV, MKV, WEBM, AVI, FLV, and more
How It Works
Upload Video
Select Platform
Preview Result
Download
Frequent Asked Questions
Which platforms do you support?
Our video aspect ratio converter includes presets for all major social media. You can resize video for Instagram (Reels, Stories, Posts), convert to 9:16 for TikTok, create YouTube Shorts, or adjust any clip to vertical or square formats.
Is it free?
Yes, this is a 100% free online video resizer. There are no watermarks, no sign-ups, and no limits on how many videos you can process.
Is it safe?
Absolutely. Unlike other online video tools, we process everything locally in your browser using WebAssembly. Your files are never uploaded to a server, ensuring maximum privacy.
How is the background generated?
When you fit video to screen with a different aspect ratio, we automatically generate a blurred background from your content. This fills the empty space (removing black bars) to create a professional, full-screen look for vertical platforms.