offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Auto Crop Video

Automatically detect and remove black bars from video edges for a cleaner, full-frame viewing experience.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Source file

Files are processed locally in your browser using WebAssembly.

How Auto Crop Works

This tool automatically detects black or empty borders around your video and removes them. It works best with solid black borders from letterboxing or pillarboxing.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.