Upscale Image
Enlarge images with AI super-resolution. Detail enhancement, sharper edges.
Coming soon
We're polishing this tool — read on to learn what it'll do, or try one of our working tools above.
Upscaling enlarges images without the blurry results you get from naive resizing. Converterzilla's upscaler will use a small neural network running on WebAssembly in your browser to add plausible detail when scaling 2× or 4× — all without uploading your photos to a cloud GPU.
How to use Upscale Image in your browser
- Drop your image. Upload a JPG or PNG.
- Pick the scale factor. 2× for a moderate boost, 4× for a dramatic enlargement.
- Click Upscale. The model processes the image entirely in your browser. Output is downloaded as a new file.
Why use Converterzilla for Upscale Image
AI in your browser
We use ONNX-Runtime-Web with a small upscaling model. Your photos never reach a cloud GPU.
Sharper edges
Unlike bicubic interpolation, AI upscaling restores edges and textures plausibly.
2× and 4× modes
Pick the scale that fits your use case — print, web hero, or thumbnail enlargement.
Frequently asked questions about Upscale Image
We're shipping the WebAssembly model loader. It needs careful memory tuning to handle large photos in low-end browsers.
Browser AI is slower than cloud GPUs — expect 5-30 seconds per image at 2×. We trade speed for privacy.
AI upscalers vary by training data. Our default model is general-purpose and works well on most everyday photos.