Android: Copy the .ttf file to Internal Storage > Fonts (requires third-party apps like zFont or iFont).
iOS: Non-unicodes like Tm Heera are not natively supported. Use apps like iFont or AnyFont for specific design apps.
4. Troubleshooting
Font not showing up: Restart the application (Word, Photoshop, etc.) after installing the font. If it still doesn't show, restart your computer.
Square Boxes appearing: If you see squares (□□□) instead of letters, your computer might be missing the necessary Tamil language support. Go to Settings > Time & Language > Language and add Tamil to your preferred languages.
For macOS:
Download the font file.
Double-click the .ttf file.
Click Install Font in the Font Book application.
Tm Heera will then be available in apps like Pages, Word for Mac, or Adobe Suite.
For Windows (10/11)
Extract the downloaded ZIP file.
Right-click the .ttf file and select Install.
Alternative: Double-click the font file, then click the Install button.