Cthulhu_ parent
Which is cool but it's not web, and few people have working TV reception that supports it at the moment. The web version of Teletekst (https://nos.nl/teletekst) is over 3 MB in size.
It's better than web! You don't usually view it with Internet. You view it with either an antenna or with broadcast cable. It's up even when the Internet is down.
Are there no APIs with smaller and faster responses? The Swedish equivalent has --even a fairly respectable terminal client.