Upscale Image
Enlarge your images 2x or 4x while maintaining quality using advanced scaling algorithms.
Overview
The Upscale Image tool allows you to:
- Double (2x) image dimensions
- Quadruple (4x) image dimensions
- Apply HD sharpening enhancement
- Maintain image quality during enlargement
Supported Formats
- JPG / JPEG
- PNG
- WebP
How to Use
- Select the Tool - Click on "Upscale Image" from the Images category
- Upload Your Image - Drag and drop or click to browse
- Choose Scale Factor:
- 2x - Double the dimensions
- 4x - Quadruple the dimensions
- HD Mode - Enable for additional sharpening
- Process - Click "Process Now"
- Download - Save your upscaled image
Scale Options
2x Upscale
- Doubles width and height
- 4x total pixel count
- Best for moderate enlargement
4x Upscale
- Quadruples width and height
- 16x total pixel count
- Best for significant enlargement
HD Mode
When enabled, applies a sharpening filter after upscaling to:
- Enhance edge definition
- Reduce blur from scaling
- Improve overall clarity
Example
| Original | 2x Upscale | 4x Upscale |
|---|---|---|
| 500x500 | 1000x1000 | 2000x2000 |
| 1920x1080 | 3840x2160 | 7680x4320 |
Technical Details
- Uses high-quality bicubic interpolation
- Multi-step scaling for 4x (2x → 2x)
- Sharpening kernel for HD mode
- Canvas-based processing
Best Practices
- Start with the highest quality source image
- 2x is recommended for most use cases
- HD mode works best with photos
- Avoid upscaling already upscaled images
Limitations
- Results depend on original image quality
- Very small images may appear pixelated
- Large upscales require more processing time
Privacy
All upscaling happens locally in your browser. Your images are never uploaded to any server.