Upscale an image with AI
Enlarge photos, scans and screenshots 2× or 4× with real super-resolution — reconstructed detail instead of blur. Runs on your own device: free, private, no watermark, no credits.
How it works
- Drop an image. JPG, PNG or WEBP, up to 1024 px on the long side (bigger images are downscaled first so the 4× output stays manageable).
- Pick engine and scale. "Fast" loads in a second and runs anywhere; "Max quality" (Real-ESRGAN) is better on photos and shines with a WebGPU browser. 2× or 4×.
- Compare and download. A before/after slider shows the difference; the result downloads as PNG.
Frequently asked questions
Is my photo uploaded?
No. The super-resolution network runs inside your browser — the photo never leaves your device.
How is this better than plain resizing?
Resizing interpolates, so edges blur. Super-resolution reconstructs plausible detail — edges, textures and text stay crisp at sizes where classic resizing turns soft.
Fast vs Max quality?
Fast is a compact SPAN network — instant load, runs on any device. Max quality is Real-ESRGAN: better photo detail, bigger model, and it really wants WebGPU (recent Chrome/Edge) to be quick.
Why the 1024 px input cap?
A 4× upscale of 1024 px is a 16-megapixel image — about the practical memory ceiling for browser tabs on ordinary hardware. Crop first if you only need part of the picture sharper.