Enhance and upscale images using AI super-resolution. Runs entirely in your browser -- your images stay private.
Drag & drop an image here, or click to browse
Supports PNG, JPG, WebP (max 2048px recommended)Initializing...
This AI Image Upscaler uses machine learning super-resolution to enlarge and enhance your images directly in the browser. Unlike simple resizing that creates blurry results, AI upscaling reconstructs fine details, sharpens edges, and produces high-quality enlarged images. Choose between 2x and 4x upscaling factors to get the size you need.
The tool uses a deep learning super-resolution model (Swin2SR) powered by Transformers.js to run inference entirely in your browser using WebAssembly. When you upload an image and click Upscale, the model analyzes the image and generates new pixels that reconstruct lost detail. For 4x upscaling, the model runs two passes of 2x super-resolution for the best quality. The first time you use the tool, the AI model will be downloaded and cached in your browser for future use.
For most images, 2x upscaling provides excellent results with fast processing. Use 2x when you need a moderate size increase with maximum sharpness. Choose 4x when you need a significantly larger image, such as preparing a small web image for print, or enlarging a thumbnail to a usable size. Keep in mind that 4x takes longer to process since it runs two passes.
For optimal results, start with the highest quality source image available. Images up to 2048 pixels on the longest side work well. Very large images may be slow to process since the AI model runs on your device. JPEG compression artifacts in the source image may be amplified during upscaling, so PNG or high-quality JPEG sources produce the best output.
If your browser does not support the AI model or if the model fails to load, the tool automatically falls back to high-quality canvas-based upscaling with Lanczos-style interpolation and sharpening filters. While not true AI super-resolution, this fallback produces noticeably better results than simple browser resizing.
All processing happens locally in your browser. Your images are never uploaded to any server. The AI model runs on your device using WebAssembly, so your photos and graphics remain completely private. The upscaled result can be downloaded as a PNG file ready for use in your projects.