P: add support for displaying HDR photos in Grids on Adobe Portfolio (myportfolio.com sites)

I've modified the title.  Portfolio teams don't live here - they have a different request area. I will tag some folks to get visibility. 

@Rikk Flohr: PhotographyAh! The large version of the HDR child does serve an HDR gain map (the large version of the woman labeled as HDR serves only an SDR gain map).

Can we get support to see HDR in this grid? I think that's required to really get the benefit here. The images are already pretty large and suitable for viewing side by side. And anyone who is worried about how the images look next to each other already has control to make them consistent if they need.

@hanomanobThe Lightroom Web Galleries (my example link in the original post) do support HDR, but only when viewing the image large (not in the grid view). FireFox is not a browser which currently supports HDR photos (nor is Safari). You can confirm your actual HDR headroom with test #1 on my site in Chrome/Brave/Edge/Opera: https://gregbenzphotography.com/hdr/

Are you viewing the images large and then 'arrowing' between them?

@Rikk Flohr: PhotographyThank you for digging in here.

I do not see any HDR content. It's likely delivering a standard JPG based on the "preview for SDR version" of your source.

When I view your test images, both render as SDR-only JPGs on both Chrome and Brave (confirmed with Adobe Gain Map Demo app). If I compare Chome to FireFox (which would definitely not support HDR now), the page looks identical. 

I am having no issues with HDR in Portfolio. See this test page: https://rikk.myportfolio.com/hdr-images-test-page 
On an HDR capable screen toggling between the two images shows clear extended range in the highlights...

I do not see any difference viewing the example pictures on my desktop and my HDR-capable Asus proArt Notebook, nor do i see a white square. I use Firefox on both computers and a Benq SW321C montor on my desktop.

It would be a natural extension of Lightroom's HDR capability to be able to display the HDR photos in Adobe's MyPortfolio. Conversely, it is frustrating to take the time to make HDR edits in Lightroom, but then be unable to share them using MyPortfolio, which is also an Adobe service. I am hoping Adobe will add this enhancement to MyPortfolio.