| Platform | Availability | Video Quality | Price | | :--- | :--- | :--- | :--- | | | India & Worldwide (with VPN) | 4K Ultra HD | Included with subscription (₹299/month or ₹1499/year) | | Sun NXT | Tamil Nadu & Global | HD 1080p | Free trial, then ₹399/month | | YouTube (Rented) | Select regions | 1080p | ₹50-100 rental |

Karnan was released worldwide on April 9, 2021, coinciding with the Tamil New Year. The film featured Dhanush in a career-defining role as a fierce village protector. With a budget of approximately ₹50 crore, the film relied heavily on box office collections, especially since theatrical windows were still recovering from the COVID-19 pandemic.