Hacker News Reader

I'm still a bit confused how this is a problem. Can you elaborate?

Is there any serialisation standard that specifically addresses this? I know YAML and TOML doesn't at least (correct me if I"m wrong)

Something like Protobuf where there is a schema is defined means metadata like key name does not get repeated for every object, its only the values.

No more trying to have short names to keep file size down.

IMHO, it sounds like the job of the compression algorithm, not the format.