Crop Video Online Without Watermarks
Crop borders, remove black bars, and reframe videos for vertical TikTok Reels or square Instagram posts.
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Your Privacy is Protected
- Your files are processed entirely in your browser
- No file upload — your video never leaves your device
- No account or registration required
- Files are not stored on any server
Crop Video Online Without Watermarks
Remove unwanted background distractions and center subjects with custom pixel cropping.
FFmpeg WebAssembly crops video matrix frames locally with zero server upload.
How to Use This Tool
- 1
Select your MP4 file
Drop your file onto the upload box or click to browse. The file stays on your device — it is never uploaded to any server.
- 2
Choose conversion options
Customize output settings or quality bitrate if needed. All parameters are pre-configured for optimal results.
- 3
Process in your browser
Click Convert to run the conversion locally using high-performance client-side WebAssembly and modern web APIs.
- 4
Download MP4
Click Download to instantly save your converted MP4 file directly to your local storage.
Why MediaConvertKit is Faster & More Private
| Feature | MediaConvertKit | CloudConvert / Zamzar |
|---|---|---|
| File Processing | 100% In-Browser (Local) | Uploaded to Remote Server |
| Privacy & Confidentiality | Guaranteed Zero Exposure | Files Stored Temporarily |
| Upload & Download Wait | Zero (Direct RAM Access) | Minutes (Bandwidth Dependent) |
| Price & Daily Limits | 100% Free & Unlimited | Paid Credits / Queues |
Supported Formats
Input Formats
Output Format
Frequently Asked Questions
- Yes, crop wide horizontal video into vertical format for mobile stories.
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