Compress MOV
iPhone and camera MOV files, saved as a smaller MP4 on your device.
Load a MOV and the page sets a target size computed from the clip's resolution, frame rate and length. The output format is MP4 (H.264) unless you change it under Advanced. Tap 70%, 50%, 30% or 10%, or click the After size and type a number, to aim for a different size.
Free Video Compressor
No sign-up. No upload. No size limit.
Nothing is uploaded — the file is compressed on your device.
What is inside an iPhone MOV
MOV is Apple's QuickTime container. iPhone 7 and later record video in HEVC when Settings > Camera > Formats is set to High Efficiency, and in H.264 when it is set to Most Compatible. Apple notes that when you share by AirDrop or email, the iPhone may convert the video to a more compatible format such as H.264 (checked September 2026, Apple Support).
This page writes a new file named after the original with "-compressed.mp4" at the end. The video inside is H.264 by default, the codec with the widest playback support in MP4 files. The MOV on your disk or in Photos is not modified.
HEVC clips and your browser
An HEVC MOV can only be read on a device with a hardware HEVC decoder. Chrome has no software HEVC decoder, so on a computer without one the page shows "This browser cannot decode this video." On a PC that cannot read the file, set the iPhone to Most Compatible for future recordings, or compress the clip on the iPhone itself in Safari.
On some Macs, Chrome stops decoding certain H.264 files partway through. The page then restarts with software decoding. Frames that still cannot be decoded are replaced with the previous frame, and the result says how many were replaced.
Settings for phone clips
Screen size lists Original with its resolution and the lower steps; a 4K clip offers 1080p, 720p and 480p. Portrait clips stay portrait. Frame rate under Advanced has Original, 60 fps and 30 fps. If the file is only going to Apple devices, MP4 · HEVC under Format keeps the smaller codec; this page plans HEVC at 65% of the H.264 bitrate for the same resolution, and offers it only where the device can encode it.
The screen is kept awake while compressing. If the page is closed before you download, the last result stays in the browser for up to 7 days. For a clip that only needs shortening, Trim Video ↗ is a separate tool.
Frequently asked questions
Will the output be MOV or MP4?
MP4. With the default format the video inside is H.264; with MP4 · HEVC it is HEVC.
My MOV is HEVC and the page says it cannot decode it.
Your device has no hardware HEVC decoder, and Chrome has no software one. Try the iPhone itself or a recent Mac.
What happens to the sound?
With Audio set to Keep as is, the track is copied without re-encoding. 128 kbps and 64 kbps re-encode it; audio with more than 2 channels is then mixed down to stereo. Only the first audio track is kept.
Can I do this on the iPhone itself?
Yes, in Safari. Choose the video from Photos or Files; it is compressed on the phone and nothing is uploaded.
Compress MOV
Opens the compressor with a target size computed for this page.