Video Cropper
Crop video to 9:16, 1:1, and other ratios to fit short-form perfectly
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
Crop your video frame to a ratio like 9:16 vertical short-form or 1:1 square. There's no file upload, everything is processed right in your browser, so even personal videos stay private.
How to use
- Drag and drop or click to select your video file.
- Choose the crop ratio (9:16, 1:1, etc.) and crop position (center, top, or bottom). Use "Custom" to enter any ratio you want.
- Click "Crop" and wait until the progress reaches 100%.
- Check the finished preview and save it with "Download MP4."
FAQ
- Are my files uploaded to a server?
- No. Your video is never uploaded; it's processed entirely in your browser (via WebAssembly FFmpeg). That said, the first run may be a bit slow while the conversion engine downloads.
- What ratios can I crop to?
- It offers presets for 1:1 (square), 9:16 / 4:5 / 3:4 (vertical), and 16:9 / 4:3 (horizontal), plus a "Custom" option to set any width:height ratio freely. It crops around the center, and you can also choose a top/bottom (or left/right) position.
- Will the output quality drop?
- It re-encodes to H.264 (MP4) using a high-quality CRF 23 setting, so there's almost no noticeable loss. Large 4K originals may take a while to process in the browser.