[lIIIllllIIII]

Your comment sent me off on a mental tangent for a minute about what it would take to create a PCF - portable canvas format

I suddenly realised I was reinventing HTML!

Just allow people to export HTML/CSS for archival.

[mbreese]

A full single-file archival HTML file would really get you pretty far in the regard (embedded CSS, no JS, data/base64 images). You might even convince me that JS is okay if needed to render the page, but a static dom would be better.