How do I compress MOV files?

Run "npx optimo video.mov" to compress MOV with lossless optimization. For stronger compression, add --lossy. For size reduction through resizing, add --resize followed by a percentage, dimensions, or target file size.

What is the best way to reduce MOV file size?

The two biggest levers are resizing (reducing dimensions to match display size) and lossy compression. Resizing usually has a larger impact than codec-level compression. Sometimes converting to a more efficient format is the best approach.

Compress MOV files

MOV is common from editing tools, but it’s usually not ideal for delivery. Compression typically means converting to MP4/WebM.

Last updated: 2026-03-18

To compress MOV files, run npx optimo video.mov. Optimo applies FFmpeg-powered compression by default. For stronger reduction, use --lossy or --resize to shrink dimensions — often the single biggest lever for file size.

Start with optimo

First, run optimo on your video file:

npx optimo video.mov

This is safe: optimo keeps the original if the output isn't smaller.

Two big levers

1) Lossy mode

npx optimo video.mov --lossy

2) Resize (dimensions)

npx optimo video.mov --resize w1280

Practical tips

Convert MOV to MP4 for the broadest compatibility.
Use `--resize` to cap huge editor exports before encoding.
If you need a web-native, smaller option, compare MP4 vs WebM outputs.

Optimize MOV Resize MOV MOV format guide

Consider converting

Sometimes the best compression is picking a better delivery format.

MOV → MP4 MOV → WebM MOV → MKV MOV → AVI MOV → OGV

Popular conversions

Convert MOV to MP4 Convert MOV to WebM Convert WebM to MOV Convert MP4 to MOV Convert MOV to MKV Convert MOV to AVI Convert MKV to MOV Convert AVI to MOV

Frequently asked questions

How do I compress MOV files?: Run "npx optimo video.mov" to compress MOV with lossless optimization. For stronger compression, add --lossy. For size reduction through resizing, add --resize followed by a percentage, dimensions, or target file size.
What is the best way to reduce MOV file size?: The two biggest levers are resizing (reducing dimensions to match display size) and lossy compression. Resizing usually has a larger impact than codec-level compression. Sometimes converting to a more efficient format is the best approach.