Convert HEIC to AVIF

A practical, local workflow for converting HEIC to AVIF with optimo.

Last updated: 2026-03-18

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.
Optimize HEICCompress HEICResize HEICHEIC guide
AVIF
High-compression modern image format that can beat WebP on size at similar quality.
Optimize AVIFCompress AVIFResize AVIFAVIF guide

More from HEIC

HEIC → JPEGHEIC → WebPHEIC → PNGHEIC → JPEG XLHEIC → GIF

More to AVIF

PNG → AVIFJPEG → AVIFWebP → AVIFJPEG XL → AVIFGIF → AVIFSVG → AVIF

Frequently asked questions

How do I convert HEIC to AVIF?
Run "npx optimo photo.heic --format avif" in your terminal. Optimo handles the format conversion and applies optimization in a single step.
Why convert HEIC to AVIF?
AVIF is web-friendly and can be very small for photos. Useful for performance-focused delivery.
Does converting HEIC to AVIF lose quality?
Optimo uses sensible defaults that balance file size and quality. For lossless conversion (where possible), omit the --lossy flag. Add --dry-run to preview the result before committing.