AI Image Upscaler
Make a small or low-resolution image bigger and sharper using an AI super-resolution model (Swin2SR) that runs entirely in your browser. Unlike plain resizing, which just blurs, the AI reconstructs detail to enlarge by 2x or 4x. The model downloads once on first use; your image is processed locally and never uploaded.
How to upscale an image with AI
- Drop an image in, or click to browse.
- Choose 2x or 4x and let the AI enhance it (a few seconds).
- Compare the result and download the larger image.
Examples
Enlarge a thumbnail
A 400x300 photo at 2x
An 800x600 image with reconstructed detail, not just stretched
Frequently asked questions
Is my image uploaded anywhere?
No. The AI model runs in your browser with WebAssembly. The image is processed on your device and never uploaded. Only the model downloads, once.
How is this different from resizing?
Resizing stretches the existing pixels, which looks blurry when you enlarge. This uses an AI super-resolution model that reconstructs fine detail and edges, so the larger image stays sharp.
What do 2x and 4x mean?
2x doubles the width and height (4x the pixels); 4x quadruples each side. 4x runs the model twice, so it takes longer and uses more memory.
Why is the first run slow?
The AI model downloads the first time you use the tool, then is cached. Large images and 4x also take longer because there is more to process.
What works best?
Clean images without heavy compression artifacts upscale best. Very large inputs may be slow or run out of memory, so start with smaller images for 4x.
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