Free Online Image Upscaler

Upscale images up to 4x using high-fidelity bicubic interpolation and unsharp masking.

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Upload Image to Upscale (2x / 4x)

Multi-pass bicubic canvas interpolation with unsharp mask sharpening

Client-Side Guarantee: Processed 100% locally in your browser. No files or data are uploaded.

How to Use the Image Upscaler

  1. Upload the photo you wish to upscale.
  2. Select 2x or 4x magnification factor.
  3. Click Upscale Image.
  4. Compare before/after and download.

Key Features

✓ 2x and 4x upscaling modes
✓ Edge-preserving unsharp mask
✓ Noise reduction smoothing
✓ High-res output download

About Image Upscaler

Increase photo resolution 2x or 4x directly in your browser. Utilizes multi-pass canvas smoothing and edge-preserving sharpening algorithms.

Frequently Asked Questions

Does this require an external AI server?

No. It uses client-side algorithmic bicubic sampling and unsharp filtering entirely in browser memory.

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