@pi @fulkrum perhaps bc office was originated from 1990 when wasting 1 KB storage was a crime. (and much of office code hasn't changed ever since) ...

(libreoffice was first released in 2011)

@shrik3 @pi This is really weird, as both are zip-compressed XML documents...

@fulkrum @pi actually I think it’s a matter of header overhead:

rich text:

chars odt docx ------------------------------------ 2k 41k 6.5k 100k 338k 342k