Compress a MOV file

Shrink an iPhone or Mac MOV video by 20 to 80 percent and keep it as a MOV, processed on your device.

    Drop MOV files here or choose files.

    • 500MB and up to 3 minutes per file. Up to 5 files at a time
    • The first time you use it, the browser downloads the video engine (about 31MB)
    • Re-encoding happens on your device, so a 1-minute video can take several minutes. A computer is recommended

    For example, a 10MB video reduced by 40% comes out around 6MB, and by 80% around 2MB. The more you reduce, the rougher the picture, and at very high reductions the resolution is lowered automatically.

    Files never leave this device. Privacy policy

    Result

    Upload a MOV file and click Convert. The smaller MOV file will appear here.

    What to do next

    MOV to MP4 converter

    Swap only the container to MP4 without re-encoding.

    Compress a video

    Shrink MP4, MOV, WebM or any other video format.

    Trim a video

    Keeping only the part you need shrinks the file without re-encoding.

    How it works

    Upload a MOV video from an iPhone or Mac, choose how much to reduce it (20, 40, 60 or 80 percent), and click Convert. The result is saved as MOV. For example, a 50MB video reduced by 60 percent targets about 20MB. Upload several files and they are processed one after another. Save them one at a time or as a ZIP.

    The tool subtracts the audio's share from the target size, sets a video bitrate to match, and re-encodes as H.264. If the target is so low that the picture would fall apart, it lowers the frame rate or resolution one step at a time and tells you below the result.

    Things to know

    Everything runs on your device, so the file is never uploaded, but that also means it uses your hardware heavily. Videos up to 3 minutes are accepted, and phones are much slower than computers. Keep the screen on while it works, because it stops if the screen turns off.

    A video that is already heavily compressed has little room left. If it cannot be made smaller than the original, the tool says so. Try lowering the resolution or trimming to the part you need instead.

    Frequently asked questions

    Does it work with vertical videos shot on an iPhone?

    Yes. iPhones store the video sideways and attach a rotation flag that says to display it vertically. The tool reads that flag, compresses the video as it appears on screen, and saves the result as a video that is vertical from the start with no flag needed.

    Does it shrink by exactly the percentage I chose?

    The tool subtracts the audio's share from the target size, sets the video bitrate to land slightly under it, and encodes. Long scenes with a lot of motion can come out a little larger, and the tool tells you below the result when that happens. If the video is already heavily compressed and cannot be made smaller than the original, no file is saved and the tool says so.

    How much quality is lost?

    At 20 to 40 percent, the difference is often hard to see on a phone screen. At 60 to 80 percent, dark scenes and fast motion start to look rough. If hitting the target would make the picture too blocky, the tool lowers the resolution one step at a time (for example 1080p to 720p) and tells you below the result.

    Why does it take so long? Does it work on a phone?

    The video is re-encoded frame by frame on your device rather than on a server, so it can take several times the length of the video depending on your hardware. It works on a phone but much more slowly, and it stops if the screen turns off or you switch apps. For long videos, use Chrome or Edge on a computer.

    Related tools