Image Upscaler — Enlarge Photos 2× and 4×
Make small or blurry images larger and sharper with a Real-ESRGAN model that runs right in your browser. The model is only about 5 MB, and your pictures are never uploaded.
Your files stay on your device: they are processed in this browser tab’s memory and never uploaded.
The model is about 5 MB and is downloaded once. A GPU browser (recent Chrome / Edge) is much faster.
How it works
The image is split into overlapping tiles and each tile is enlarged by the model, which fills in detail instead of simply stretching pixels. The tiles are then blended back together, so no seams show.
Best results
The model removes noise and JPEG blocks while it enlarges, so it suits photos, screenshots and artwork that have lost quality. Start with 2× and compare with the slider. A recent Chrome or Edge with a GPU is much faster.
FAQ
How large is the model?
About 5 MB. It downloads once and your browser then keeps it in its cache.
How long does it take?
A few seconds with a GPU. Without one, a large photo can take a few minutes.
Does it keep transparency?
Yes. Transparent PNG and WebP images stay transparent, with the outline enlarged too. JPG has no transparency, so those areas become white.
Are my images uploaded?
No. The model runs on your device.
Can it recover faces or text perfectly?
It sharpens what is there and makes plausible guesses. Very small faces and text may come out looking slightly different from the real thing.
What can you do with an image upscaler?
Editors rescue a low-resolution logo or photo for a 4K timeline; designers enlarge reference images and old artwork for print; online sellers sharpen product photos; and creators bring old pictures and small web images up to a size that holds up on a modern screen.