twitch2x

Real-time GPU video upscaling via WebGPU.

PixelLift sharpens live video playback in real time, entirely on your GPU. It captures each video frame, runs it through a small neural-network upscaler that adds detail and reduces compression artifacts, then paints the result back over the player. The whole pipeline runs locally inside your browser via WebGPU — nothing is uploaded, no servers, no data collection. WHAT IT DOES • Overlays an enhanced canvas over the page's video element while leaving the original intact, so existing controls, chat, 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. • Side-by-side compare: drag a vertical handle across the player to see the original on one side and the enhanced output on the other. CONTROLS A floating toolbar appears at the top of the video player: • Enhance — toggles enhancement on/off. • Standard / Ultra — switches between a fast preset (60fps real-time on most discrete GPUs) and a heavier preset with an extra cleanup pass. • Compare — opens the side-by-side splitter. • Stats — shows FPS, GPU time per frame, and dropped-frame counts. PERFORMANCE • Standard: roughly 10–20 ms per frame on a modern discrete GPU. • Ultra: roughly 50–70 ms per frame; GPU-bound on most hardware. A built-in stats overlay shows actual numbers on your machine. PRIVACY PixelLift makes zero network calls. All inference runs locally on your GPU. Settings persist via browser storage and never leave your device. REQUIREMENTS • Chromium-based browser with WebGPU enabled. • A GPU. Integrated graphics will work but the Ultra preset will not be real-time. RX 6000 / RTX 3000 series or better is recommended for Ultra. • Currently supports twitch.tv channel pages; additional sites planned. CREDITS The upscaling networks are from Anime4K (bloc97 et al.) and the WebGPU port by the Anime4KWebBoost team — both MIT-licensed and credited inside the extension.