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Image Enlarger & Upscaler

Upscale photos 2x or 4x using bicubic resampling and edge sharpening.
Local-first

Upload small image to enlarge & upscale

Upscale 2x, 3x, or 4x with bicubic resampling and edge sharpening

How this tool works

What it accepts, how to use it, and where your input is processed.

200% & 400% Resolution Boost

Upscales small avatars, graphics, and low-res photos by 2x, 3x, or 4x without pixelation using high-order bicubic polynomial interpolation.

Edge Sharpness Enhancement

Applies an adaptive unsharp mask convolution pass to restore contrast along silhouettes and details, counteracting interpolation softening.

100% In-Browser & Private

Raster expansion and matrix convolutions run entirely on your local CPU/GPU via Canvas. No file uploads or cloud processing limits.

Need an extra feature or found an edge case?Send Feedback

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