P: Please add AVIF file support

@Etic Europe 

Check your colour mode, bit depth, layers etc.

Hey @Stephen Nielson i can't find this option on windows, wether on BETA 27.0.1 or PS26.11. I tried on exporting and save as copy, no AVIF option shown. How do i export in AVIF without add ons or script then ? 

While on the general topic, before someone asks about Image Processor or similar batch output, I wrote an AVIF batch processor here:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/batch-save-as-avif-script/m-p/15462414

And an artboards to AVIF script:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/artboards-to-avif-script/m-p/15480083#M879937

Hi @Pierre Charpentier - we currently do not support AVIF for grayscale but have it noted as something to discuss with the team. Thanks for the feedback!

@Stephen Nielson Question: as per the AVIF spec, "It supports 8-bit, 10-bit and 12-bit images, single-bland, single-band and alpha channel, RGB and RGBA.". However, currently inside Photoshop v26.10, when I'm working on an 8-bit greyscale document, File > Save a Copy will not show the option for AVIF, I need to convert it to RGB first to get the option, but then I don't get the benefits of using a single band image since the file size is way larger than it should be when compressed losslessly (almost three times larger, which makes sense because you're encoding the three channels). Will the option to save lossless greyscale 8-bit AVIF files be added soon?

Ok now I just found it is possible to save to AVIF with HDR support from a 32 bits image by using the ACR filter from Photoshop directly. 

Ok so no support for 32 bits with AVIF.

- Can someone explain how to convert a 32bits HDR image to 16bits without loosing / distorting the HDR part of the image (gamma=1, expsoure=0 without clipping HDR)? This must be possible since ACR can export to AVIF and thereafter open in Photoshop as a 16bits while HDR is preserved!

- I imported AVIF and JPEG XL to IOS Photos (on iPhone 16 Pro). Only AVIF from ACR shows HDR in IOS. This is not Adobe problem I know but please we need a solution to edit HDR in Photoshop and get back to devices supporting HDR.

Thanks!

GOOD MORNING
I can save avif images normally in Photoshop. However, I tested saving an image in webp with a transparent background and converted it to avif in Pikflow. However, when I load this image in Photoshop, it goes straight to Camera Raw and has a black background, although the images when loaded in other applications such as Canva have a transparent background.
Does anyone know if there is a way to solve this?
I am not using the beta version

@Stephen NielsonLooks great, thank you for adding support! Really nice to see the granular options offered here.

A few areas of feedback:

• Alpha compression settings are ignored, file size never changes with any of the options. Seems like user input is ignored.
• When choosing lossless, should probably force 444 sub-sampling (or warn user) as the other options result in loss of fidelity.
• With high quality settings, slow encoding actually produces a larger file than medium encoder speeds. Is this expected within the AVIF spec?