Free — AI-powered upscalingAI Image Upscaler
Upscale images 2x or 4x with enhanced sharpening. Increase resolution while preserving quality.
Drop an image or click to upload
PNG, JPG, WebP — up to 20MB
2x & 4x Upscale
Double or quadruple your image resolution with enhanced quality.
Smart Sharpening
Unsharp mask filter preserves edges and detail after upscaling.
Private
Everything runs locally. Images never leave your browser.
Frequently asked questions
How does the upscaling work?
The tool uses multi-step bicubic interpolation with an unsharp mask filter for enhanced edge detail. For 4x, it performs two passes of 2x scaling for better results.
What's the maximum image size?
Input images up to 20MB. The output canvas is limited to 8192x8192 pixels (browser limit). For large images, use 2x instead of 4x.
Will it work on any image?
Yes — photos, illustrations, screenshots, logos, and more. Results are best on images that are slightly blurry or low-resolution.
Is my image uploaded anywhere?
No. All processing happens locally in your browser using the Canvas API. Nothing is sent to any server.