Language settings
In the General panel of Zotero Settings, you can change the language of your Zotero library. Click on Edit → Settings → General.
Some of the citation styles are available in several languages. Go to Document Preferences in the Zotero tab in your word processor to change the language of your citation style (when available).
Change the font size
You can change the font size in your Zotero Library. Click on View → Font Size.
