Free Online AI Image Upscaler
Enhance photos and graphics with Real-CUGAN super-resolution running locally on your device. No upload, no watermark, or use Fast Canvas mode for quick 3× exports.
If your photo, scan, screenshot or small social export is too tiny for a layout, you need more pixels before you crop, print or reuse it. AI super-resolution does more than stretch the image: it predicts sharper edges and texture from the low-resolution input.
GrepCut’s AI mode runs Real-CUGAN locally with TensorFlow.js. That means you can upscale an image without sending the file to a cloud queue, creating an account or adding a watermark.
A 4x upscale gives your file many more pixels, but it cannot recover information that was never captured. If your original image has unreadable text, heavy JPEG blocks or motion blur, the AI may sharpen the shape of the problem rather than reveal the true detail.
For cleaner results, start from the least-compressed version you have. If you are comparing modes, export both AI and Fast Canvas versions and choose the one that looks more natural for your image.
Can you upscale an image without uploading it?
Yes. GrepCut processes your image locally in your browser, including AI mode. Your file does not leave your device.
Is this true AI upscaling or just resizing?
AI mode uses Real-CUGAN super-resolution. Fast Canvas mode is different: it uses browser Canvas scaling for quick 2x, 3x and 4x exports without neural-network reconstruction.
Should you use 2x or 4x AI upscaling?
Use 2x when you need a modest resolution boost with fewer artifacts. Use 4x when the source is clean enough and you need a much larger image for design, print prep or close cropping.
Will AI upscaling fix blurry text or faces?
It can make edges look sharper, but it cannot guarantee accurate missing detail. If your original text or face is too blurred, inspect the result carefully before treating it as factual or print-ready.
What image formats can you upload?
You can upload JPG, PNG or WebP images. The export is saved as PNG or JPEG depending on what the browser can preserve for your file.
Why is AI mode slower than Fast Canvas?
AI mode runs a neural network on your device, so processing depends on your image size, browser and GPU support. Fast Canvas mode skips the AI model, so it is quicker but less detailed.
Can you upscale anime art or game images?
Yes. Real-CUGAN is especially relevant for illustrations, anime-style art and sharp graphic edges. For pixel art, compare AI with Fast Canvas because some artwork looks better when the original pixel structure is preserved.