Image Upscaler
Upscale images 2x, 3x or 4x with smart sharpening, noise reduction and a split comparison
上传图片
点击或拖拽上传图片
支持 JPG / PNG / WebP，建议 ≤ 2000px
放大设置
画质增强
无轻中强
对比预览
上传图片即可预览并自动处理
💡 处理完成后可拖拽绿色分隔线对比原图细节
About this tool
The upscaler raises resolution and perceived quality, turning a small image into a larger, cleaner one:
- 2x, 3x and 4x: enlarge low resolution images to a larger size
- Stepwise sampling: bicubic interpolation applied in stages keeps more detail than a single jump
- Smart sharpening: an adaptive unsharp mask strengthens edges and texture
- Noise reduction: a median filter pass removes grain and compression artifacts first
- Detail boost: local contrast enhancement brings out shadow and highlight detail
- Split comparison: drag the divider to compare the original and the result
- One-click download: export the upscaled image as a high quality PNG
When to use it
- Enlarge a low resolution photo for print or a large display
- Improve the clarity of an image pulled from the web
- Restore an old, soft photo
- Upscale game assets or UI icons
Everything runs locally in the browser; images are never uploaded.