To optimize WebM videos, run npx optimo video.webm. Optimo applies format-specific FFmpeg-powered compression that typically reduces WebM file size by 15–40% without visible quality loss. The original file is kept if the output is not smaller.
Command
Start here. Run optimo on a video file:
npx optimo video.webm
Tip: add --dry-run to preview changes.
When to use WebM
- web delivery
- background videos
- high compression
Trade-offs
- Some platforms prefer MP4 for maximum compatibility
Related formats
MP4
The most compatible web video container; a safe default for delivery.
MOV
Common container from cameras and editing tools; typically converted for the web.
MKV
Flexible container used in many workflows; commonly remuxed/converted for delivery.
AVI
Legacy container format; usually worth converting to MP4/WebM.
OGV
Ogg video container; occasionally used for open formats, but uncommon today.
Related conversions
Convert GIF to WebM
Convert MP4 to WebM
Convert MOV to WebM
Convert MKV to WebM
Convert AVI to WebM
Convert WebM to MP4
Convert WebM to MOV
Convert WebM to MKV
More for WebM
Compress WebM
Resize WebM
What is WebM?
Compare formats
If you're picking a delivery format, comparisons can help.
Frequently asked questions
How do I optimize WebM files? Run "npx optimo video.webm" in your terminal. Optimo applies format-specific FFmpeg-powered compression that reduces WebM file size while preserving quality. The original file is kept if the optimized output is not smaller.
Is WebM optimization lossless? By default, optimo uses lossless optimization for WebM. For additional compression, add the --lossy flag to allow minor quality trade-offs for significantly smaller files.
What tools does optimo use for WebM? Optimo uses FFmpeg under the hood with format-specific settings tuned for WebM files.