I can't find a suitable word to describe the downsides of using HTML tables for displaying images here.

But there are alternatives allowing a lot of details without bandwith problems.

• Base64 encoding
• SVG

And less so

• ASCII graphics

I had to use the latter multiple times in the past and it was kind of bothersome moving characters by hitting the bar.

But a nodelet-hack to extend the ability of the local markup to show base64 or SVG could be an easy proof of concept.

Alas I doubt that's our top priority here.

FWIW here a POC:

The Perl Onion as Base64

The Perl Onion as SVG

UPDATE

You can copy either code into your Free Nodelet Settings to see the effect. (Don't forget to activate the free nodelet to be shown in your nodelet tab)