Oh, this reminds me of a Chrome extension I wrote to distribute Web content (images, html, js, anything) over DNS: https://blog.zorinaq.com/cdn53-a-super-distributed-cdn/ It implements the fake TLD .cdn53: when visiting http://zorinaq.com.cdn53 the extension intercepts the request, sends a DNS query for the TXT record for "_cdn53.zorinaq.com" and the response contains the HTML content, or any content, and it can be up to ~65 kb in size. It's super-distributed as it will naturally be cached by all DNS resolvers worldwide that hit the domain...
Good idea. Probably nowadays this would not work due to changes in chrome extension API? They have limit a network interception API.