Convert jxr (HDR) screenshots saved by GameBar to HDR pngs, copying them to the clipboard, ready for sharing. Uses https://github.com/ledoge/jxr_to_png. Use Windows + Alt + PrtScn to save a screenshot using GameBar.

watchjxr.ps1

# Uses jxr_to_png.exe from https://github.com/ledoge/jxr_to_png

Add-Type -AssemblyName PresentationCore
Add-Type -AssemblyName WindowsBase
Add-Type -AssemblyName System.Windows.Forms

function Copy-FileToClipboard {
    param([string]$filePath)

    $files = New-Object System.Collections.Specialized.StringCollection
    $files.Add($filePath)

    [System.Windows.Forms.Clipboard]::SetFileDropList($files)
}

$watchFolder = "C:\Users\User\Videos\Captures"
$outputFolder = Join-Path $watchFolder "hdr"

# Create output folder
if (-not (Test-Path $outputFolder)) {
    New-Item -ItemType Directory -Path $outputFolder | Out-Null
}

$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = $watchFolder
$watcher.Filter = "*.jxr"
$watcher.NotifyFilter = [System.IO.NotifyFilters]'FileName, LastWrite'
$watcher.EnableRaisingEvents = $true

$action = {
    param($source, $eventArgs)

    $jxrFile = $eventArgs.FullPath
    if (-not (Test-Path $jxrFile)) { return }

    # Wait until file is fully written
    while ($true) {
        try {
            $s = [System.IO.File]::Open($jxrFile,'Open','Read','None')
            $s.Close()
            break
        } catch {
            Start-Sleep -Milliseconds 300
        }
    }

    $outputFolder = Join-Path (Split-Path $jxrFile -Parent) "hdr"
    if (-not (Test-Path $outputFolder)) {
        New-Item -ItemType Directory -Path $outputFolder | Out-Null
    }

    $pngName = [System.IO.Path]::GetFileNameWithoutExtension($jxrFile) + ".png"
    $pngFile = Join-Path $outputFolder $pngName

    Write-Host "Converting:"
    Write-Host "  $jxrFile"
    Write-Host "  -> $pngFile"

    $proc = Start-Process `
        -FilePath "C:\Users\User\Videos\Captures\jxr_to_png.exe" `
        -ArgumentList "`"$jxrFile`" `"$pngFile`"" `
        -Wait `
        -PassThru `
        -NoNewWindow

    if ($proc.ExitCode -eq 0 -and (Test-Path $pngFile)) {
        # Delete original files
        Remove-Item $jxrFile -Force
        Remove-Item $pngName -Force
        Write-Host "Conversion done."

        # Copy PNG file path to clipboard
        Copy-FileToClipboard $pngFile
        Write-Host "PNG file copied to clipboard as a file reference."
    } else {
        Write-Host "Conversion failed!"
    }
}

Register-ObjectEvent $watcher Created -Action $action
Register-ObjectEvent $watcher Renamed -Action $action

Write-Host "Watching $watchFolder for .jxr files..."
while ($true) { Start-Sleep 1 }

Set objShell = CreateObject("Wscript.Shell")
objShell.Run "powershell.exe -NoProfile -ExecutionPolicy Bypass -File ""C:\Users\User\Videos\Captures\watchjxr.ps1""", 0, False

You can make a vbs file like this above and place it in shell:startup to have this script run in the background on startup.