3 ms·

Aah ok, that makes sense, sorry for the confusion. I didn't know zip worked that way, although in hindsight that explains why it's so simple and fast to extract

• masklinn 6y ago
  > although in hindsight that explains why it's so simple and fast to extract and/or modify only a part of a .zip archive, even on old computers. That is also because zips have a « central directory », so to modify or add one of the files you just need to add a new record then update the central directory. If you don’t care too much for size you can literally just append them to the existing zip file and leave both the old record (for updates) and the old central directory.