Double an image's resolution with AI enhancement — processed on your device, never uploaded.
Drop an image and click Upscale 2×. A Real-ESRGAN AI model runs 100% in your browser; your image never leaves your device. On first use the AI engine (about 18 MB) downloads once and is cached. Large images are processed in tiles; very large photos are first reduced to a 2000 px working size, which is noted below when it happens.
Double an image's width and height with Real-ESRGAN AI enhancement that runs entirely in your browser. No upload, no sign-up: drop an image, click Upscale 2x, and download a sharper PNG at exactly twice the size.
A small 480 × 320 web image becomes a noticeably cleaner 960 × 640 PNG: edges are reconstructed rather than just stretched, so logos, product shots and screenshots stay crisp instead of going soft and blurry.
The open Real-ESRGAN model (realesr-general-x4v3) analyses each 256-pixel tile of your image in your browser and synthesises plausible fine detail at four times the size; neighbouring tiles overlap so no seams appear. The enhanced result is then resampled with high-quality smoothing to exactly 2x your image's dimensions. Transparent images are processed on a white background, as the model works with opaque photos.
No. The Real-ESRGAN model downloads to your browser once and all enhancement runs on your device. Your images never leave it.
A normal resize stretches the pixels you have, which goes soft. The AI model was trained on millions of photos and predicts the fine detail that a real larger photo would contain — edges, textures and gradients come out visibly sharper.
Any image up to a 2000 px working size on its longest side; bigger photos are reduced to that working size first (the page tells you when this happens) and the result is 2x the working size. Output is always exactly double the processed dimensions.
PNG is lossless, so the detail the AI just rebuilt is not immediately softened by JPEG compression. If you need a smaller file afterwards, run the PNG through our Image Compressor.
It sharpens and enlarges, and mild blur improves — but it cannot invent detail that was never recorded. Severely blurred, noisy or tiny images will look better than a plain resize, not magically perfect.