How to use the Compress MOV
- Choose the MOV.
- Choose a compression level or a target size.
- Lower the resolution for big savings on 4K iPhone videos.
- Compress and download.
iPhone 4K videos
A minute of 4K iPhone video can be 170–400 MB. Compressing to 1080p at "Recommended" usually brings that under 50 MB while still looking sharp on phones and laptops. The result uses H.264 in MOV, so it opens on Windows too.
Good to know
Compression uses H.264 (x264, "veryfast" preset) with either a quality target (CRF) or a calculated bitrate for target sizes. Audio is re-encoded to AAC. The file is never uploaded, so even private videos can be compressed safely.
Supported files
MP4, MOV, MKV, WEBM, AVI, WMV, FLV, M4V, 3GP, 3G2, MPEG, MPG, TS, MTS, M2TS, VOB, OGV, MXF, ASF, DIVX, F4V, SWF, DV, MOD, TOD, WTV, RM and RMVB video, with H.264, HEVC, VP8, VP9, MPEG-4, MPEG-2, WMV, Theora and other codecs. AV1 videos cannot be read in the browser yet. Files up to 1 GB each.
Frequently asked questions
Will HDR be kept?
No, the compressed video is standard dynamic range (SDR) H.264, which displays correctly on every screen.
How much does the Compress MOV cost?
Nothing. It is free with no registration, no watermark and no limit on how many files you convert.
Is my file uploaded to a server?
No. The converter runs inside your browser using WebAssembly, so your file is processed on your own device and never sent to us or anyone else.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.