If you are on Ubuntu, Debian, or Linux Mint, you don't need to download files from random websites. Use to install the fonts-sangam-tamil package.
sudo apt install fonts-sangam-tamil fonts-lohit-tamil fonts-taml-tscii apt sangam tamil fonts top
and drag the file in, or right-click the file and select "Install". If you are on Ubuntu, Debian, or Linux
fonts), APT Sangam was part of the early wave of fonts that allowed Tamil typing in applications like MS Word and Photoshop. Top 3 Reasons to Use APT Sangam (or similar legacy fonts) Document Preservation If you are on Ubuntu
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