Command
Convert a file by targeting the output format:
npx optimo image.webp --format jpeg
Tip: add --dry-run to preview changes.
Why convert?
- JPEG is widely supported and easy to handle across tooling.
- Useful when you don’t need transparency.
Format notes
WebP
Modern image format with great compression and broad browser support.
Optimize WebP Compress WebP Resize WebP WebP guide
JPEG
The classic photo format: widely supported, good quality-to-size for photographs.
Optimize JPEG Compress JPEG Resize JPEG JPEG guide
Not sure which to use?
If you're choosing a delivery format, here's a quick comparison.