AVIF vs HEIC
A detailed comparison of AVIF Image and HEIC Image — file size, quality, compatibility, and which format to choose for your workflow.
AVIF Image
Raster & Vector ImagesAVIF is a next-generation image format based on the AV1 video codec. It offers significantly better compression than JPEG and WebP while maintaining excellent visual quality, including HDR and wide color gamut support.
About AVIF filesHEIC Image
Raster & Vector ImagesHEIC is the default photo format on Apple devices since iOS 11. It offers roughly 50% better compression than JPEG at similar quality but has limited support outside the Apple ecosystem.
About HEIC filesStrengths Comparison
AVIF Strengths
- Best-in-class compression efficiency — 30-50% smaller than JPEG for the same quality.
- Royalty-free and patent-unencumbered (unlike HEIC).
- Supports alpha transparency, HDR, wide gamut (BT.2020), and up to 12-bit color.
- Progressive decoding: a blurry preview appears while the file is still downloading.
- Supported in all major browsers since late 2022 — no polyfills needed.
HEIC Strengths
- Roughly 50% smaller than JPEG at equivalent visual quality.
- 10- and 12-bit color depth supports HDR photography.
- Container format holds depth, Live Photo, bursts, and thumbnails in one file.
- Supports transparency and multi-image sequences.
- Built into iOS, macOS, and most modern Samsung and Google flagships.
Limitations
AVIF Limitations
- Encoding is CPU-expensive — an AVIF export can take 10-30× longer than JPEG.
- Older software (pre-2022) cannot open AVIF without plugins.
- Email clients still largely ignore it — stick to JPEG for attachments.
- Metadata support (EXIF, XMP) exists but tooling is less mature than for JPEG.
HEIC Limitations
- Patent-encumbered (HEVC) — Windows users must buy a $0.99 codec pack from the Microsoft Store.
- Not supported by most web browsers or older image editors.
- Sharing to non-Apple platforms usually auto-converts to JPEG, losing metadata.
- Hardware decoding required for smooth performance; software decoding is CPU-heavy.
Technical Specifications
| Specification | AVIF | HEIC |
|---|---|---|
| MIME type | image/avif | image/heic |
| Container | HEIF (ISOBMFF) | HEIF (ISO/IEC 23008-12) |
| Codec | AV1 (intra-only) | — |
| Max dimensions | 65 536 × 65 536 px | 8,192 × 4,320 (practical) |
| Color depth | Up to 12-bit per channel | 8, 10, or 12 bits per channel |
| Color spaces | sRGB, Display-P3, BT.2020, arbitrary ICC | — |
| Compression | — | HEVC (H.265) intra-frame |
| Transparency | — | Supported |
Typical File Sizes
AVIF
- Thumbnail (400px) 10-30 KB
- Web photo (1920px) 80-300 KB
- 4K photo (3840px) 300 KB - 1.2 MB
- Lossless copy of 24MP photo 8-15 MB
HEIC
- iPhone photo (12 MP) 1.5–3 MB (half of JPEG)
- Live Photo with 3s video 3–6 MB
- Portrait mode with depth map 2–4 MB
Ready to convert?
Convert between AVIF and HEIC online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
AVIF (AV1 Image File Format) is a cutting-edge image format derived from the AV1 video codec, backed by the Alliance for Open Media. It delivers up to 50% smaller files than JPEG with equal or better visual quality, plus HDR and transparency support.
HEIC (High Efficiency Image Container) is the default photo format on iPhones since iOS 11, based on the HEVC video codec. It offers roughly 50% smaller files than JPEG while maintaining superior image quality and supporting depth maps and Live Photos.
AVIF files open in Chrome, Firefox, Safari (from macOS Ventura), Edge, and GIMP 2.10+. Support is growing rapidly, but some older image editors may not yet handle AVIF natively.
HEIC files open natively on Apple devices, Windows 10/11 (with the HEIF extension from the Microsoft Store), and modern versions of GIMP and Photoshop. Google Photos also supports HEIC viewing and conversion.
AVIF provides better compression and quality than WebP, especially for photographs. However, WebP has broader software support today. Use AVIF for maximum performance on modern browsers and WebP as a reliable fallback.
HEIC is superior in quality and file size but has limited support on non-Apple platforms. Use HEIC on Apple devices for storage efficiency. Convert to JPG when sharing with Windows users, uploading to websites, or printing.