Free Online Video Cropper — Crop Videos Without Upload
Crop and resize video frames online for free without uploading files to a server. Set custom crop regions visually and export instantly using FFmpeg WASM.
Drag & drop or click to upload a video
MP4, MOV, WebM, AVI, MKV
Powered by FFmpeg WebAssembly. All processing happens locally in your browser.
Crop Videos Instantly
Remove unwanted areas from your videos — trim edges, change the aspect ratio, or extract a specific portion of the frame. Everything runs directly in your browser using FFmpeg WebAssembly, with no uploads and complete privacy.
Key Features
Visual Crop Selection
Drag to select your crop region on the live video preview. See exactly what you'll get before processing.
100% Private
Videos are never uploaded. All processing happens locally in your browser — your content stays yours.
Pixel-Perfect Precision
Enter exact X, Y, width, and height values for precise crops, or use the interactive canvas selector.
Multi-Format Support
Works with MP4, MOV, WebM, AVI, and MKV video files. Output as MP4 for universal compatibility.
Common Use Cases
Social Media
Crop landscape videos to square or portrait for Instagram, TikTok, or Reels
Remove Borders
Remove black bars, watermarks in corners, or unwanted UI elements from recordings
Focus Subject
Zoom into a specific subject by cropping out irrelevant parts of the frame
How this Crop Video works
This video cropping tool leverages FFmpeg WebAssembly's crop video filter to extract a rectangular region from a video frame without re-encoding the audio stream. Users select the crop region through an interactive HTML5 Canvas overlay rendered on top of a live video preview — dragging to define X offset, Y offset, width, and height in pixels relative to the original video dimensions.
The FFmpeg crop command applies the filter as: -vf "crop=W:H:X:Y" where W and H are the output dimensions and X, Y are the offset coordinates from the top-left of the original frame. The tool automatically rounds dimensions to even numbers since H.264 and most video codecs require even-numbered width and height values. The audio stream is copied directly without re-encoding using -c:a copy, preserving original audio quality and dramatically speeding up processing.
All video processing occurs client-side using FFmpeg WebAssembly loaded via CDN, ensuring that your video files never leave your device. The crop filter is applied during a single FFmpeg pass producing an MP4 output container. After processing, users can immediately preview the cropped video using the built-in HTML5 video player and download the resulting file.
How to Use
Upload video
Drag and drop or click to upload your video file (MP4, MOV, WebM, AVI, MKV).
Select crop region
Drag on the preview to select the crop area, or enter pixel values manually.
Crop & download
Click Crop Video to process and download your cropped video instantly.
Example Usage
Cropping a 1920×1080 video to a 1280×720 region starting at offset X=320, Y=180.
Frequently Asked Questions
What video formats can I crop?
Is my video uploaded to a server?
Can I set a custom aspect ratio?
Will cropping reduce video quality?
What is the maximum file size supported?
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The Crop Video is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.
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