Video Cropper
Crop video dimensions and change aspect ratio (9:16 Vertical, 16:9, 1:1 Square) online without watermark.
Online Video Cropper
100% Client-Side PrivacyDrag 4-corner handles on video frames to crop boundaries or pick standard presets for single or batch video processing.
Drop your video files here, or browse
Upload single or multiple MP4, WEBM, MOV, AVI, MKV, FLV, 3GP, TS & M4V videos
Cropped 100% locally in your browser. No server upload.100% Client-Side Privacy
All video frame slicing and sub-rectangle canvas encoding execute 100% locally in your web browser. Zero server uploads.
Interactive 4-Corner Handles
Drag any of the 4 corner handles directly over the video player or use numeric position sliders for custom boundaries.
Multi-Format Export
Export cropped video frame streams directly as MP4, WEBM, animated GIF, or extract background sound tracks as MP3.
Frequently Asked Questions
How do I crop a video on ReadyForFile?
Upload your video file, drag the corner handles on the preview player to define your crop area, or choose a preset like 9:16 or 1:1, and click "Crop Video".
Can I crop multiple videos at once?
Yes! You can select or drop multiple videos, adjust crop areas per video, and batch crop them all with "Crop All Videos in Queue".
Is my video uploaded to any server?
No! All processing is executed 100% locally on your computer inside your web browser using HTML5 Canvas and MediaRecorder APIs.
Which formats can I export?
You can export cropped clips as MP4 video, WEBM video, animated GIF, or pure audio MP3.
Quick Answer: What does Video Cropper do?
ReadyForFile Video Cropper is a free online utility that crop video dimensions and change aspect ratio (9:16 vertical, 16:9, 1:1 square) online without watermark. directly in your web browser with no registration or software installation required.
About Video Cropper
Free online Video Cropper. Crop video frame boundaries and change aspect ratios for Instagram Reels (9:16), Feed Posts (1:1), TikTok, and YouTube Shorts. Adjust crop position and dimensions with precision sliders or preset aspect ratios, export as MP4, WEBM, or animated GIF. 100% browser-based processing with zero server uploads.
Features & Capabilities
- Visual crop overlay box over live video player
- Social media aspect ratio presets: 9:16 Vertical, 1:1 Square, 16:9, 4:5 Portrait
- Precision numeric position (X, Y) and dimension sliders
- Real-time pixel crop resolution calculation (e.g. 720x1280 px)
- Multi-format export: MP4, WEBM, animated GIF, MP3 audio
- 100% local browser processing with zero server uploads
How Client-Side Processing Works Behind the Scenes
Unlike traditional cloud utilities, ReadyForFile executes all file processing directly within your device’s browser sandbox:
The browser loads your document into local device RAM via the HTML5 File & FileReader API.
High-performance JavaScript / WebAssembly compiles the output locally without transmitting network packets.
The generated output is packaged into a local blob: URI and saved directly to your filesystem.
How to Use Video Cropper
Upload Video File
Select or drag and drop your MP4, MOV, WEBM, or AVI video file into the cropper box.
Select Aspect Ratio or Adjust Crop
Choose an aspect ratio preset (9:16 Vertical, 1:1 Square) or adjust the crop position sliders.
Crop & Download
Click 'Crop Video Now' to transcode locally in your browser and download your cropped video file.
Frequently Asked Questions
How do I crop a video for Instagram Reels or TikTok?
Upload your video file, select the '9:16 Vertical' preset under aspect ratios, adjust the position sliders, and click 'Crop Video Now'.
Is my video uploaded to any server?
No! All video slicing and canvas cropping run 100% locally in your web browser using HTML5 Web APIs.
Can I crop a video into a 1:1 square format?
Yes! Click the '1:1 Square' preset button to crop your video into a perfect square frame.
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