Heavy file while empty

Hi everyone,

I wanted to get my file lighter but i noticed that when I supress all the sheets, the file still has a 324kb memory.

I spent a lot of time on forums to look out why and none of the techniques described have worked with my file. To recap, I already tried to supress all lines and columns, formats, names and hidden names. I also emptied the clipboard and the working memory of the file as so as macros.

You can find attached the file I'm talking about.

Thank you very very much in advance,

Have a great day,

Xta