Image Upscaler
Enlarge an image up to 4x with sharper detail, right in your browser.
Drop an image here
PNG, JPG, or WebP, or paste from clipboard
Choose a fileDrop in an image and an AI model enlarges it 4x with sharper detail than a plain resize. The model runs on your own device.
Your image stays on your device. It is never uploaded or stored anywhere.
Overview
Increases the resolution of an image using AI super-resolution, adding detail rather than just stretching pixels. Useful for enlarging small photos, sharpening low-resolution images, and preparing pictures for larger displays or print. It runs in your browser, so your image is never uploaded.
How it works
The tool uses Real-ESRGAN, a super-resolution model that reconstructs fine detail when it scales an image up, which looks far sharper than ordinary resizing. To handle large images within a browser's memory limits, it processes the picture in tiles and stitches them back together. It runs locally through ONNX Runtime Web, using your GPU (WebGPU) where available and falling back to CPU (WebAssembly) when needed, so the image stays on your device.
How to use it
- Upload or drag in the image you want to enlarge.
- Wait while the model loads and processes the image tile by tile.
- Compare the upscaled result with the original.
- Download the higher-resolution image.
Examples
Enlarge a small photo
Take a low-resolution image and scale it up for a banner or a larger screen without the soft, blocky look of plain resizing.
Sharpen an old picture
Improve the clarity of a small or dated photo so faces and edges read more cleanly.
FAQ
Is my image uploaded?
How much can it enlarge an image?
Why does a large image take a while?
Can it fix a very blurry or tiny image?
What formats can I use?
Related tools
Embed this tool
Paste this snippet to put the tool on your own site. It runs entirely in the visitor's browser, the same as it does here.