Thank you for the reply to my question. Upon further investigation I have found the save to avif format under the available options in File>Save a Copy
@Ben J. CoteThat appears to be using a 3rd-party AVIF plugin. That plugin is great, but only available for Windows and does not have full suppport for HDR.
@Ben J. CoteYes, unless there is another out there I don't know of. The one I know was standalone for a time and then additionally listed in the marketplace. It's quite excellent, with a lot of user control over encoding 8/16 bit images on Windows.
@Dunham13031955 (or @ anyone else reading this, if they're interested),
Actually, you can install a plugin directly from Adobe's Creative Cloud Desktop app (so you won't need to use any unknown websites, download any files, or generally follow any sketchy procedures). To install it right from your desktop, just do the following:
1) Open the Creative Cloud app (usually you can left-click it with your mouse, the icon should be on your Windows taskbar).
2) In the app, there should be a vertical list of icons on the left: Home, Apps, Files, Discover, Stock & Marketplace, and Quick Actions. Click "Stock & Marketplace".
3) In the "Search all Plugins" field, type "avif" and hit Enter. As of September 2024, Adobe should return you a couple of options.
4) Under "AV1 Image (AVIF) File Format", you can click "Get". It will install the plugin for you, it's completely free (PS can't be running, though. You'll need to close it, install the plugin from the app, then reopen PS when you're done).
5) Open PS, open the file you want to save as an AVIF, then go to "File" > "Save a Copy...". The Save window will pop up.
6) Click the option "Save as type:" (it's right below the field where you'd normally name your file). At the top of the list, you should see the option "AV1 Image (*.AVIF)".
That's pretty much it. Give your file a name, then click the "Save" button. A new window will open asking you to choose the quality of your image. For my purposes (background images on my website), the number "40" works very well (no user will notice any difference, especially given the fact it's just a background image, so it's not supposed to be anyone's focus). Depending on what you need, you could go even lower than that. At a quality of 4, 1080px JPGs will give me a file of about 200-300 KB, whereas at the corresponding quality of 40, AVIF will give me a file of about 90 KB. Works for me. 👌🏻
So is there no Mac OS supported HDR file format or HDR file plugin for Photoshop then? No using HDR files in Photoshop for Mac users? Hm. Maybe I have to learn Affinity. I think that they support HDR... but will it let me hand assemble panoramas which is what I wish to do? I guess I'll take a look.
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