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HEIF at a glance
HEIF
HEIF was developed by MPEG and built on the ISO Base Media File Format lineage, which helps explain why it feels more like a modern media container for images than a simple legacy bitmap file.
AVIF at a glance
AVIF
AVIF emerged from the Alliance for Open Media's work around AV1 and uses the HEIF family as its structural container, which connects it to both modern web delivery and newer image-container design.
Format comparison
| Feature | HEIF | AVIF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2015 | 2019 |
| Inventor | Moving Picture Experts Group (MPEG) | Alliance for Open Media |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use HEIF
- Your source file is already in HEIF.
- Preserve source expectations before exporting to AVIF.
- HEIF is commonly used in image workflows.
When to use AVIF
- Your target workflow expects AVIF.
- Improve delivery compatibility with AVIF.
- AVIF is commonly used in image workflows.
FAQs
Why convert HEIF to AVIF?
Convert to AVIF when you need compact, high-quality web or app images, especially for responsive delivery, ecommerce, editorial sites, and modern UI assets.
It is a strong target when bandwidth savings and visual quality both matter.
What changes when converting HEIF to AVIF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to AVIF adds animation support. Moving to AVIF adds HDR content.
What should I review after converting HEIF to AVIF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.