Why this tool is useful
Remove side panels, browser chrome or unused margins from a short recording while keeping its pixels on the device.
Local File Tools · runs locally
Private Video Cropper
Crop a rectangular region from a browser-decodable clip and export WebM without uploading the source video.
Ready. Your working data stays in this browser.
Files and capture streams stay on this device. Processing uses browser APIs only; nothing is uploaded to YTSave, the media API or a proxy.
How it works
The selected source rectangle is validated against the decoded dimensions and copied frame by frame into the output canvas.
Practical example
Crop 120 pixels from the left of a tutorial clip, keep the remaining height and download the resulting WebM.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.