Elephant herd
Small real-photo fixture
elephant-herd-small.avif- Dimensions
- 600 x 800
- Size
- 63.5 KB
- MIME type
- image/avif
SHA-256 checksum
7bef032d556d8737963dfd75d63775e7456a82cb903231dd11001c92551d3143Developer test assets
Sample AVIF files for testing
AVIF fixtures covering lossy and lossless encoding, real photographs, alpha transparency, odd dimensions, varied resolutions, and compression levels.
Download individual files
Elephant portrait
Medium detailed photograph
elephant-portrait-medium.avif- Dimensions
- 1050 x 1400
- Size
- 130.0 KB
- MIME type
- image/avif
SHA-256 checksum
e44ca0ed8b3eeca49e910b8b6b2ce66be4892664718eeab802318c5789905abc
Leopard lookout
Large decoder-performance fixture
leopard-large.avif- Dimensions
- 1350 x 1800
- Size
- 88.9 KB
- MIME type
- image/avif
SHA-256 checksum
74b02eb5ed9df6064b7ab9e314c43dba436302bd91299e1f821069f68c25edff
Savannah sunset
Low-quality compression test
sunset-compressed.avif- Dimensions
- 675 x 506
- Size
- 5.8 KB
- MIME type
- image/avif
SHA-256 checksum
a04d18ce33174bba95d7cb4cad2875c15fc379f0fcc712ca27fe7f9566c70dff
Waterfall transparency
AVIF alpha-channel fixture
waterfall-alpha.avif- Dimensions
- 800 x 600
- Size
- 18.9 KB
- MIME type
- image/avif
SHA-256 checksum
ccef964dd0f1490d8d88c75a65ff7e242d79dba00af05133448a9ca908d41650
Forest waterfall
Odd-width and odd-height fixture
waterfall-odd-321x241.avif- Dimensions
- 321 x 241
- Size
- 11.9 KB
- MIME type
- image/avif
SHA-256 checksum
bd52b09f2e1859aa12ba8db66f255fc83384c49dc0222687272bdc533c9d4019
Victoria Falls
Lossless AVIF encoding
victoria-falls-lossless.avif- Dimensions
- 640 x 480
- Size
- 350.2 KB
- MIME type
- image/avif
SHA-256 checksum
cee088e8ade88b3a539722bb73b461b26e78d64aa60d3dfd2d5e5f71d8a5f0d2
AV1 image testing
Small files can still be demanding
AVIF often produces much smaller files than JPEG, but decoding can use considerably more CPU and memory. Test low-powered phones and large source dimensions instead of measuring download size alone.
23 KBsmall fixture
1 MBlarge fixture
Browser decoding
Verify native display, createImageBitmap(), canvas export, and fallbacks separately.
Content validation
Check the AVIF container and image/avif MIME type instead of trusting the extension.
Alpha transparency
Composite the alpha fixture over light and dark backgrounds to catch opaque fallbacks.
Compression artefacts
Inspect fine hair, foliage, gradients, and shadow detail at aggressive quality settings.
AVIF testing questions
Why does an AVIF upload succeed but its preview fail?
File selection and image decoding are separate capabilities. Keep a JPEG or WebP fallback when preview support is uncertain.
Should file-size tests use only one resolution?
No. Pixel dimensions influence decoding memory even when AVIF compression makes the transferred file surprisingly small.
Fixture integrity
Verified properties, not renamed files
Each AVIF download is inspected as binary image data. Dimensions, file size, MIME type, format-specific properties, and the published SHA-256 checksum are checked after generation.
- ✓ Native browser decode
- ✓ Lossless and lossy encoding
- ✓ Alpha channel
- ✓ Odd pixel dimensions
What this collection tests
- ✓lossy and lossless AV1 decoding
- ✓alpha transparency
- ✓odd-dimension handling
- ✓large-image memory use
- ✓image/avif validation
Use in automated tests
Every file has a stable direct URL and SHA-256 checksum, making it suitable for upload fixtures, decoder tests, CI pipelines, and documentation.
curl -O https://crestconvert.com/test-files/avif/elephant-herd-small.avif