Image format

AVIF

AV1-compressed pictures in an image container, with optional alpha, sequences and high-dynamic-range colour.

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Marked paths may need steps such as flattening, rasterization, tone mapping or animation loss.

Convert to AVIF

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Marked paths may need steps such as flattening, rasterization, tone mapping or animation loss.

About AVIF

AV1 Image File Format

AVIF binds AV1 image coding to the HEIF image-container framework. The Alliance for Open Media specifies how AV1 bitstreams, image items and image sequences are represented. It addresses compact photographic delivery while retaining features that ordinary JPEG files cannot represent, including alpha and high-bit-depth colour.

AV1 supports 8-, 10- and 12-bit coding, with different chroma subsampling options and a lossless mode. Alpha is carried as an auxiliary image, and colour properties describe how samples should be interpreted. Choosing a high quality number does not by itself prove pixel-exact RGB preservation after colour conversion.

Use AVIF for final image delivery when the decoder, colour pipeline and encoding cost fit the workflow. HDR and sequences are optional, not implied by the filename. Keep a working original for editing, and test the chosen encoder on both detailed photographs and sharp graphical edges before adopting settings.

Key capabilities

Compression
Lossy & lossless
Transparency
Yes
Animation
Yes
Extensions
.avif
MIME type
image/avif
Metadata
Exif, XMP, ICC, CICP
Best for
Photo delivery & HDR images
Colour depth
8 / 10 / 12 bits
HDR
Optional; colour properties

AVIF can use lossy or lossless AV1 coding. Chroma subsampling, RGB↔YUV conversion and reduced bit depth can change source values even when the AV1 coding stage is lossless.

History of AVIF

AVIF applies video-codec development to still images through a defined container binding, rather than inventing a new filename for JPEG.

  1. 2019

    AVIF 1.0

    AOMedia documents version 1.0.0 dated 19 February 2019. The binding makes AV1-coded pictures exchangeable using the HEIF framework.

  2. AVIF

    Interoperability profiles

    The specification defines profiles that constrain AV1 configurations and image construction. A format feature and a supported decoder profile are therefore separate questions.

  3. AVIS

    Beyond a single still

    The AVIF binding also specifies AV1 image sequences using timed tracks. The avis brand identifies sequence-oriented files; decoding one image is not a full sequence implementation.

  4. AOMedia

    A maintained binding

    The published specification and reference implementations provide the basis for verifying profiles and metadata. Workflow decisions should follow those constraints rather than assumed browser support.

AVIF compared

Different formats, different trade-offs. Choose for the image and the workflow.

JPEG

AVIF vs JPEG

JPEG makes a compact photographic delivery file, but ordinary JPEG discards detail and has no alpha. Keep the richer source for editing and use JPEG when the receiving workflow expects an opaque photo.

WebP

AVIF vs WebP

WebP combines lossy or lossless 8-bit image coding with alpha and animation. It is a web delivery option when those features matter; high-precision samples and editable source structures need another working format.

HEIC

AVIF vs HEIC

HEIC stores HEVC-coded images in HEIF and can retain auxiliary images and capture metadata. It fits compatible camera and device workflows; sharing with software that lacks HEVC image decoding may require a conventional export.

JPEG XL

AVIF vs JPEG XL

JPEG XL supports lossless and lossy coding, alpha, animation and HDR. It can also reconstruct eligible JPEG bitstreams after lossless recompression; use it where the receiving tools support JXL rather than assuming universal decoding.

AVIF FAQ

What does this format store?

AVIF binds AV1 image coding to the HEIF image-container framework. The Alliance for Open Media specifies how AV1 bitstreams, image items and image sequences are represented. It addresses compact photographic delivery while retaining features that ordinary JPEG files cannot represent, including alpha and high-bit-depth colour.

How does compression affect quality?

AVIF can use lossy or lossless AV1 coding. Chroma subsampling, RGB↔YUV conversion and reduced bit depth can change source values even when the AV1 coding stage is lossless.

Does every AVIF image contain HDR?

No. HDR depends on the encoded samples and colour properties, plus the display pipeline. An 8-bit SDR AVIF is valid; higher bit depth alone does not prove an HDR image.

What should I check before opening the file?

Check the actual AVIF profile, sequence support and HDR colour handling in the receiving application. A successful SDR still-image decode does not guarantee alpha, animation or correct HDR display.

What changes when I export to another format?

An SDR export of HDR AVIF needs a chosen tone mapping. JPEG removes alpha; a still export removes sequence timing. A lossless target retains decoded output, not detail discarded by earlier AV1 coding.

When is this format useful?

Use AVIF for final image delivery when the decoder, colour pipeline and encoding cost fit the workflow. HDR and sequences are optional, not implied by the filename. Keep a working original for editing, and test the chosen encoder on both detailed photographs and sharp graphical edges before adopting settings.

Sources