Twitch2x

twitch2x enhances Twitch live streams in real time using your GPU.

It captures each video frame, runs it through a small neural-network upscaler that adds detail and reduces compression artifacts, and paints the result
back over the player. The whole pipeline runs locally inside your browser on WebGPU. Nothing is uploaded, no servers are involved, no data is collected.

The extension was built because Twitch's source bitrate is capped — even on 1080p60 channels you can see banding in dark scenes, mosquito noise around HUD
text, and softness in fast motion. twitch2x doesn't recover what the encoder threw away (nothing can), but it cleans the artifacts and produces a
noticeably sharper image, particularly on game streams with crisp UI overlays.

WHAT IT DOES

• Overlays an enhanced canvas on the Twitch player while leaving the video element intact (so chat overlays, controls, and ads keep working).
• Adapts to your monitor's refresh rate — the canvas presents at native display rate by duplicating enhanced frames when the GPU is briefly busy, so the
picture stays smooth even when enhancement runs slower than the source video.
• Provides side-by-side compare: drag a vertical handle across the player to see the original on the left and the enhanced output on the right.

CONTROLS

A floating toolbar appears at the top of the Twitch player:
• Enhance — toggles enhancement on/off.
• Standard / Ultra — switches between a fast 2x preset (60fps real-time on most discrete GPUs) and a heavier 3x preset that adds an extra cleanup pass.
• Compare — opens a side-by-side splitter.
• Stats — shows FPS, GPU time per frame, and dropped-frame counts.

PRIVACY

twitch2x makes zero network calls. All ML inference runs locally on your GPU. Your settings persist via browser storage and never leave your device.

REQUIREMENTS

• Brave or Chrome with WebGPU enabled.
• A GPU. Integrated graphics work but the Ultra preset will not be real-time. RX 6000 / RTX 3000 series or better is recommended for Ultra.
• Linux on Wayland: launch your browser with the flags shown in the About panel — Wayland's hardware video overlay otherwise hides the video pixels from
the renderer and the extension shows a one-time setup notice.

CREDITS

Upscaling networks from Anime4K (bloc97 et al.) and the WebGPU port by the Anime4KWebBoost team. Both MIT-licensed and credited inside the extension.

This extension is independent and not affiliated with Twitch.