Sample AVIF image for testing modern decoders — free, CC0

AVIF is an image format built on the AV1 video codec, with much better compression than JPEG and support in current browsers. avif/640x480.avif is the loremfile colour-bar test card, a border, a centre cross and a label giving the dimensions and mode, encoded with avifenc at speed 6.

It was encoded single-threaded, which is what makes the output reproduce byte for byte. That matters for a fixture: the hash in the manifest describes these exact bytes, and a multithreaded encoder can produce different bytes on different machines.

Use it to test browser and library decoding, content-type sniffing, image upload forms that claim AVIF support, and thumbnailers. The test card is the same one used for the PNG, JPEG and WebP files, so you can compare decoded output across formats and spot a colour or scaling difference at a glance. See also WebP, PNG and JPEG.

curl -O https://loremfile.dev/avif/640x480.avif

<img src="https://loremfile.dev/avif/640x480.avif" alt="">