AI Image Upscaler
Make small, blurry photos big and sharp. Upscale images 2× or 4× with the Real-ESRGAN AI model, running privately on your own device.
The AI already removes most blur, noise and JPEG artefacts. Use these sliders for a final touch: sharpen for crisper edges, reduce noise for a smoother, cleaner look.
How to use AI Image Upscaler
- 1
Add your image
Drop, choose or paste a JPG, PNG or WEBP image. Small and low-resolution pictures improve the most.
- 2
Choose 2× or 4×
Pick the upscale factor. The AI rebuilds detail tile by tile with a live progress bar and time estimate.
- 3
Compare and download
Drag the slider and hover to zoom in on the details, fine-tune sharpness, then download PNG, JPG or WEBP.
A free AI image upscaler that runs in your browser
Classic resizing stretches pixels, so an enlarged photo looks soft and blocky. An AI image upscaler works differently: a neural network trained on millions of image pairs predicts the missing detail, rebuilding sharp edges, textures and clean lines while removing blur, noise and JPEG compression artefacts. This tool uses Real-ESRGAN (realesr-general-x4v3), a well-known open-source super-resolution model, and runs it entirely in your browser with WebAssembly.
Upscale image 4× or 2×
- 4× multiplies width and height by four (16 times the pixels). A 500 × 500 image becomes 2000 × 2000. It is ideal for small images, thumbnails, old photos and web graphics.
- 2× doubles the size. In Best quality mode the AI runs at full strength and the result is scaled down smoothly, which gives the crispest 2× result. Fast mode is about four times quicker for large photos.
Private by design
Most online upscalers upload your photo to a server. Here the AI model (about 5 MB) is downloaded once and cached by your browser, and every pixel is processed on your own computer or phone. Your images are never uploaded, stored or seen by anyone, so it is safe for personal photos, client work and confidential documents.
How to increase image resolution without losing quality
- Start from the best source you have. The AI cannot invent information that was never captured, but it is remarkably good at cleaning up compression and restoring edges.
- Use 4× for tiny images and 2× for photos that are already medium-sized.
- Fine-tune afterwards. Add a little sharpening for crisp text and edges, or reduce noise for a smoother look.
- Save as PNG for the highest quality, or WEBP and JPG for smaller files.
- Transparent PNGs are supported. The transparency is kept and scaled smoothly.
Great for
Printing small photos larger, improving product images for online shops, enlarging logos and artwork, restoring old scans, making wallpapers from small pictures, and preparing images for presentations and social media.
Speed
Processing time depends on your device and the size of the result. Large images are processed in small tiles so they fit in memory, and a time estimate is shown as it works. A modern laptop upscales a typical 800 × 600 photo 4× in about a minute; you can cancel at any time.