AVIF to HEIC Converter

1. Upload one or more AVIF files (up to 50 MB total).
2. Click 'Convert to HEIC' — finishes in under 4 seconds per image.
3. Download HEIC files individually, or grab all as a ZIP.

AVIF is the most efficient image format available — but Apple devices only display AVIF in Safari, not in Photos or other native apps. HEIC is Apple's native format and works everywhere on iPhone, iPad, and Mac.

AVIF is the most efficient image format available today — typically 50% smaller than JPG. But Apple's native apps (Photos, Preview, Mail, Pages) don't support AVIF — only Safari does. If you want to view, edit, or store AVIF images on iPhone or Mac, converting to HEIC gives you the native Apple format with efficient compression. HEIC files are 20-30% larger than AVIF but open natively everywhere on Apple devices.

The converter decodes the AV1-compressed AVIF image and re-encodes it as HEIC using HEVC (H.265). Both formats are modern and efficient — the output is 20-30% larger than the AVIF source but opens natively on Apple devices. AVIF's alpha channel is preserved as HEIC's alpha channel.

• Viewing AVIF images on iPhone without Safari.
• Adding AVIF photos to iPhone Photos library.
• Preparing AVIF files for Apple Mail attachments.
• Storing AVIF images in iCloud Photos.
• Editing AVIF in Apple Photos or Preview.
• Consolidating a mixed-format library into HEIC for Apple.
• Converting web-sourced AVIF files for personal iPhone use.

HEIC output is visually very close to the source AVIF at normal viewing distances, but 20-30% larger in file size. Both formats are lossy, so the AVIF → HEIC conversion involves a second encoding pass. For a single conversion, quality loss is typically not perceptible; for round-trip workflows, keep the original.

• HEIC is not natively supported on Windows 10 or earlier.
• HEIC files are 20-30% larger than the source AVIF.
• Some legacy software cannot open HEIC.
• Animated AVIF sequences are converted using only the first frame.
• Repeated AVIF → HEIC → AVIF conversions accumulate loss.

• HEIC opens natively on iOS 11+, iPadOS, macOS High Sierra+.
• Windows 10/11 supports HEIC with the free HEIF Image Extensions.
• Native support in Photos, Preview, and Adobe CC apps.
• Syncs seamlessly with iCloud Photos.
• Ideal for Apple ecosystem workflows.

• Use AVIF → HEIC for Apple ecosystem compatibility.
• Keep the AVIF original if you need the smallest file — AVIF is smaller than HEIC.
• For cross-platform sharing, convert AVIF → JPG instead.
• Batch-convert up to 50 MB at once.
• AVIF → HEIC conversion is 20-30% larger, but 40-50% smaller than JPG.

HEIC file is 20-30% larger than AVIF

Expected. AVIF is the most efficient format; HEIC is slightly less efficient but opens natively on Apple devices.

Photos app doesn't show AVIF files

Apple Photos doesn't support AVIF natively — only Safari does. That's why conversion to HEIC is needed for Apple-native use.

HEIC won't open on Windows 7

Windows 7 has no HEIC support. Use JPG instead if you need Windows 7 compatibility.

• Alliance for Open Media — AVIF
• Can I Use — AVIF
• Apple — HEIF and HEVC