To convert JPEG to HEIC, run npx optimo photo.jpg --format heic. HEIC can be efficient for phone photos and some tools. Optimo handles format conversion and optimization in a single step.
Command
Convert a file by targeting the output format:
npx optimo photo.jpg --format heic
Tip: add --dry-run to preview changes.
Why convert?
- HEIC can be efficient for phone photos and some tools.
- Useful when targeting Apple ecosystems rather than pure web delivery.
Format notes
JPEG
The classic photo format: widely supported, good quality-to-size for photographs.
Optimize JPEG Compress JPEG Resize JPEG JPEG guide
HEIC
A common camera output format (especially Apple devices) with efficient compression.
Optimize HEIC Compress HEIC Resize HEIC HEIC guide
Not sure which to use?
If you're choosing a delivery format, here's a quick comparison.