To convert HEIC to AVIF, run npx optimo photo.heic --format avif. AVIF is web-friendly and can be very small for photos. Optimo handles format conversion and optimization in a single step.

Command

Convert a file by targeting the output format:

npx optimo photo.heic --format avif

Tip: add --dry-run to preview changes.

Why convert?

• AVIF is web-friendly and can be very small for photos.
• Useful for performance-focused delivery.

Format notes

HEIC
A common camera output format (especially Apple devices) with efficient compression.

AVIF
High-compression modern image format that can beat WebP on size at similar quality.