The AI upscaling performs better with higher internet speeds, and the system uses adaptive bitrate to adjust quality.
The platform utilizes the WebGLShader API to take 1080P content and upscale it to 4K resolutions, allowing users with 4K monitors or TVs to view higher-fidelity content. 4k_crunchyroll.txt
or devices for using the WebGLShader AI upscaler? How To Increase Quality on Crunchyroll The AI upscaling performs better with higher internet
While some content might be upscaled, the majority of anime produced today and currently on the platform is capped at 1080P. Platform & Subscription Changes (2026) 4k_crunchyroll.txt
Crunchyroll does not natively stream in 4K for most content. Instead, they use a real-time AI upscaling algorithm called Anime4K within the browser/client-side.