Image Upscaler

Upscale images up to 4x using bicubic resampling. Free online tool to enlarge photos, icons, and graphics — all in your browser.

How It Works

  1. Upload your image by clicking the upload area or dragging and dropping it directly.
  2. Choose your desired upscale factor — 2x, 3x, or 4x.
  3. Click the 'Upscale' button to start processing.
  4. Preview the enlarged result instantly in your browser.
  5. Download the upscaled image to your device.

Example

Input: Image 600 x 400 px, scale 2x
Result: Upscaled image 1200 x 800 px

FAQ

Absolutely. All processing happens entirely client-side in your browser — no data is sent to any server. Your images never leave your device.

The tool supports PNG, JPEG, WEBP, and BMP formats.

You can upscale an image up to 4x its original size using bicubic resampling.

Bicubic resampling produces smooth, high-quality results, but very small source images may still appear slightly blurry at high magnification.

No account or registration is required. The tool is completely free to use.