When you click Download, the ZIP file lands in your default downloads folder. After you unzip it and install the TTF files, the actual fonts get copied into your system's fonts directory: /Library/Fonts on Mac or C:\Windows\Fonts on Windows.
Find the font and click Download
Browse the Google Fonts library, click any font tile to land on its detail page, then click the Download button at the top of that page. You’ll get a ZIP file containing TTF files for every weight in the family, plus a copy of the SIL Open Font License.



