Upscale Image to HD Quality

We use the HTML5 Canvas API with bicubic interpolation and a custom unsharp mask convolution kernel. This recovers perceived sharpness lost during enlargement — similar to how professional photo editors work.

Technically unlimited, but we recommend under 4 MP for 4× scale (e.g. 1000×1000 → 4000×4000) to avoid browser memory limits. Large images may take a few seconds to process.

Balanced works for most images. Use Smooth for portraits and skin tones. Use Crisp for screenshots, text, logos, or illustrations where sharp edges matter.

Output is saved as a high-quality PNG to preserve every detail. PNG is lossless, so there is no quality degradation from the download process.