Free Online Image Upscaler (RealCUGAN) - ATools

Free online image upscaler with 2×/3× enlargement. Uses RealCUGAN (WASM local CPU) when available, otherwise falls back to high-quality resize.

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Image upscaler: uses RealCUGAN (WebAssembly, local CPU) when available (no uploads). If unsupported, it falls back to high-quality resize.

Mode

Cross-Origin Isolation required (COOP/COEP)

RealCUGAN (threads) requires SharedArrayBuffer. Open under Cross-Origin Isolation (set COOP/COEP response headers). Otherwise switch to “High-quality resize”.

ScaleDenoise / restore

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Note

AI upscaling can be CPU- and memory-intensive. Desktop browsers are recommended. Everything runs locally with no uploads.

AI engine: RealCUGAN-ncnn-webassembly (MIT)

Original

Output

No output yet