Humor me please..

[Bifurcator]

HDR is HDR, it's a file format and can't typically be displayed on the internet. If you want to display an HDR image over the internet you will probably need to write an applet of some sort so that a slider or something can be positioned to display the various exposure levels.

Tone mapping is tone mapping and although it is popular to tone-map an HDR image the two have absolutely no direct relationship. Tone mapping can be achieved in any one of 100 different ways with and without an interim HDR file.

All of the images you linked to are tone-mapped images. Two of them appear to have never used and HDR at any step in the process.

Displaying a tone-mapped image over HTTP is as simple as displaying any image. A tone mapped image is typically 8bits and stored in a common file format like JPG or PNG, etc. Just like a sharpened image, or a blurred image, or etc.