Enlarge 2× or 4× with an on-device super-resolution model — sharp results, and the photo never leaves your browser.
Enlarge 2× or 4× with an on-device super-resolution model — sharp results, and the photo never leaves your browser.
Enlarge a photo 2× or 4× without the blur of simple stretching. GhostImage runs Swin2SR — a real-world super-resolution model — on your device through ONNX Runtime WebAssembly, reconstructing detail as it scales. The model (~50 MB) downloads once and is cached; your image is processed locally in tiles and never uploaded. Ideal for upscaling small logos, old photos, or web images for print. It's the counterpart to Resize: Resize scales down, Upscale intelligently scales up.
Drop your image
Drag a photo onto the page or click to browse. It opens in the GhostImage studio with Upscale pre-selected.
Choose 2× or 4×
Pick the scale factor. On first use the model downloads (~50 MB, cached afterwards); then the image is upscaled tile by tile on your device.
Download the enlarged image
Save the result — JPG in, JPG out; PNG in, PNG out. Nothing was uploaded at any point.
How can I enlarge an image without it getting blurry?
Use AI super-resolution instead of plain resampling. GhostImage's upscaler runs the Swin2SR model, trained to reconstruct plausible detail — edges stay sharp where classic bicubic scaling smears them.
Is my photo uploaded to a server for the AI?
No. The model runs in your browser via ONNX Runtime WebAssembly. The one-time ~50 MB download is the model coming to you — your photo never goes the other way.
Why does it take a while?
Super-resolution is heavy: the image is processed in tiles through a neural network on your own hardware. A large photo at 4× can take a few minutes on an older machine — the progress bar keeps you posted.
What's the difference between Upscale and Resize?
Resize scales an image down (fast, exact). Upscale makes it larger using AI reconstruction. They stack: upscale an old photo, then resize or crop the result.
Does it work on drawings and logos?
Yes — the real-world Swin2SR model handles photos, art, and logos. Crisp geometric logos often benefit the most at 4×.
Every GhostImage tool runs entirely in your browser. Your file is never uploaded — there's no upload endpoint to send it to.