Upscale your images with high quality using Lanczos resampling and unsharp mask sharpening for crisp results.
Drag or click to upload image
JPG, PNG, WebPClick the upload area or drag an image to upload. Supports JPG, PNG, and WebP formats.
Choose scale factor (2x, 4x) and quality preset. Best quality takes longer but provides the sharpest results.
Click "Start Upscaling" to begin processing. Progress bar shows the current status.
Drag the slider to compare original and upscaled images. Download if satisfied with the result.
Fast Processing uses Bilinear interpolation for speed but may be slightly blurry. High Quality uses Lanczos resampling for sharper results. Best Quality applies Lanczos + unsharp mask sharpening for the crispest output but takes the longest time.
Due to browser memory limits, we recommend images under 20MB. Very large images may slow down your browser when upscaling 4x, so try 2x first.
This tool uses traditional upscaling with Canvas API and mathematical interpolation (Lanczos). No machine learning AI is used, but Lanczos algorithm provides excellent quality.
Useful for enlarging low-resolution images for printing, scaling up thumbnails for websites, or restoring old photos. Note that very blurry originals will have limited improvement.
Lanczos resampling and sharpening calculate each pixel precisely, so time depends on image size and quality settings. 4x upscaling increases pixel count by 16x, requiring more time.