Define the font face
Use @font-face with the WOFF2 URL, a unique family name, the correct weight, and font-display: swap. Then apply that family to Kannada content with a fallback such as 'Noto Sans Kannada', sans-serif.
Use the catalog CDN path
Each font detail page provides a direct hosted WOFF2 path and a ready-to-copy CSS block. On this site the public origin is https://lipi.rvanveshana.com, so relative asset paths can be prefixed with that origin for use on another website.
Keep performance predictable
Load only the families and weights the page actually uses. WOFF2 reduces transfer size, while caching lets returning visitors reuse the downloaded font. Ensure your own deployment and usage comply with the license noted for each font.