Double an image's resolution with a real super-resolution neural network (ESRGAN) running locally via WebGL — not a server farm looking at your photos.
A before/after slider shows exactly what the model added. Best on small-to-medium images; there's a sensible size cap so your tab stays alive.
AI super-resolution, locally
Doubling an image’s resolution with a real super-resolution network (ESRGAN) adds detail rather than just scaling pixels — and it runs on your device via WebGL, not a server farm looking at your photos. A before/after slider shows exactly what the model added.
It works best on small-to-medium images; there is a sensible size cap so your tab stays responsive. For simply making an image bigger without AI, use Resize.
How it works
Drop an image and open Upscale.
Run the 2× upscale (first run downloads the small model).
Compare before/after and download.
Like every pixelpix tool, this runs 100% in your browser: your file is never uploaded to a server, never leaves your device, and works even offline once the page has loaded.
Frequently asked questions
How much bigger does it make the image?
It upscales 2×, doubling width and height, using an AI model to reconstruct detail.
Is my photo sent to a server?
No. The model runs locally in your browser with WebGL; the first run downloads the small model file, then everything stays on-device.
Why is there a size limit?
Run time scales with pixel count, so very large inputs are refused to keep your browser responsive — resize first if needed.