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Upscale Image

Increase image resolution using bicubic interpolation

What is Image Upscaling?

Image upscaling is the process of increasing the resolution and dimensions of an image while maintaining or improving visual quality. Our tool uses bicubic interpolation, an advanced algorithm that creates smooth transitions between pixels when enlarging images.

Unlike simple stretching that creates pixelated results, bicubic interpolation analyzes surrounding pixels to intelligently fill in new data, resulting in sharper, cleaner upscaled images.

How to Upscale Images

  1. Upload your image by dragging and dropping or clicking to browse
  2. Select your desired scale factor: 2x, 3x, or 4x
  3. Click "Upscale" to process your image
  4. Download the high-resolution result in PNG format

Upscaling Features

⬆️ Multiple Scale Options

Choose from 2x, 3x, or 4x scaling to increase your image dimensions

🎯 Bicubic Interpolation

Advanced algorithm for smooth, high-quality upscaling

🖼️ All Formats Supported

Works with JPG, PNG, WebP, and other common image formats

⚡ Fast Processing

Quick upscaling without quality loss or watermarks

Common Use Cases

  • Preparing low-resolution images for large format printing
  • Improving social media image quality
  • Creating high-res versions of product photos
  • Upscaling graphics for presentations and displays
  • Enhancing old or small photos for digital archiving
  • Preparing images for 4K or retina displays

Frequently Asked Questions

What's the difference between 2x, 3x, and 4x scaling?

These numbers represent the multiplication factor for your image dimensions. 2x doubles both width and height, 3x triples them, and 4x quadruples them. A 100×100 image becomes 200×200 at 2x, 300×300 at 3x, or 400×400 at 4x.

Will upscaling improve a blurry image?

Upscaling increases size but cannot add details that weren't in the original. It can make images larger while maintaining existing quality, but won't fix blur or poor focus in the source image.

What is bicubic interpolation?

Bicubic interpolation is a sophisticated resampling method that considers the 16 nearest pixels when creating new pixels. This produces smoother results than simpler methods like nearest-neighbor or bilinear interpolation.

What format is the output?

The upscaled image is saved as PNG format, which preserves quality without compression artifacts and supports transparency.

Is there a file size limit?

The tool accepts most standard image files. Very large files (over 50MB) may take longer to process or exceed server limits.

Are my images stored or shared?

No. All processing happens securely and your images are automatically deleted after conversion. We don't store or access your files.

Tips for Best Results

  • Start with the highest quality source image available
  • Use 2x or 3x scaling for most purposes - 4x works best with simple graphics
  • Sharp, well-lit original images upscale better than blurry ones
  • For photos, consider upscaling before applying filters or effects
  • Test different scale factors to find the best balance for your use case