Cast your desktop and its sound to any Chromecast – up to 4K at 60 fps, hardware-accelerated, with no accounts and no tracking.
Version 1.0.1 · Free edition included · About 1.5–2 s delay – great for movies, photos and presentations, not for games.
CastScreen does the heavy lifting on your graphics card, so your PC stays responsive while the picture stays crisp.
HEVC video encoded by your graphics card (AMD, NVIDIA or Intel). Native resolution, 4K, or a lighter 1080p – your call.
Everything you hear on your PC plays on the TV, kept in sync with the picture – even through device changes.
Tuned and measured on a real Google TV Streamer: about 1.5 seconds, close to the floor of the Chromecast's built-in player. A live lag readout shows you the number.
No account, no analytics, no cloud. Your screen goes straight to your TV over your own network, to that one device only.
Cast the monitor you choose. Pro lets you pick any display on multi-monitor setups.
Pick your TV, pick a quality, press Start. Settings are remembered. Plain installer, plain uninstaller.
No cables, no extra hardware, no browser tab to keep open.
Unlock the full picture: native resolution and 4K at 60 fps. Pay once, keep it forever.
Unlocks inside the app · instant licence key · no subscription
Honest answers, including the limits.
The standard Chromecast player buffers incoming video before it shows it. Testing on a Google TV Streamer, we measured 1.4–2.0 seconds no matter how the stream is packaged, so we tuned everything else (capture, encoder, network) to add as little as possible on top. That is fine for movies, slideshows, browsing and presentations. It is not suited to fast games or video calls.
Chromecast with Google TV, Google TV Streamer and Chromecast Ultra handle 4K HEVC. Older Chromecasts are limited to 1080p H.264, which CastScreen switches to automatically (30 fps). Most testing so far has been on an AMD graphics card with a Google TV Streamer; NVIDIA and Intel encoders are supported through the same interface and may need more polish.
The installer isn't code-signed yet, which is what triggers Windows SmartScreen. Click More info, then Run anyway. You can check the installer's SHA-256 checksum on the download page.
Allow CastScreen on private networks. The TV needs to fetch the video from your PC. While casting, the stream uses a random secret address and only answers the Chromecast you selected.
Copy-protected video is deliberately blocked from screen capture by Windows and your browser. Use the app's own cast button for those services.
None. No account, no telemetry. The only network requests are to your Chromecast, and once to activate a purchased Pro key. See the privacy statement.