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Pixel Sharp Image Upscaler - Online Nearest‑Neighbour Enlarge

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Pixel Sharp Upscaler

Perfect nearest-neighbour enlargement for pixel art, icons, and retro graphics. No blur, no AI artifacts.

Drop your image here

or click to browse

PNG, JPG, GIF, WEBP – Max 10MB

Frequently Asked Questions

Nearest-neighbour interpolation is the simplest image scaling method. When enlarging, each pixel of the original image becomes a block of pixels of the same color. This preserves hard edges and pixel art appearance perfectly, with zero blur or smoothing.

AI upscalers often add “hallucinated” details or smooth edges, which destroys the aesthetic of pixel art, icons, or retro graphics. This tool keeps every pixel sharp and mathematically exact – ideal for pixel-perfect enlargements.

No, nearest-neighbor upscaling only works correctly with integer factors (2x, 3x, 4x…). Fractional scaling would cause uneven pixel sizes and distortion. The tool restricts input to whole numbers.

Any common web image format: PNG, JPEG, GIF, WEBP. The output is always a crisp PNG to ensure pixel-perfect quality.

The input file is limited to 10MB. Also, resulting canvas dimensions must fit within browser limits (typically around 16384×16384px). If the upscaled image would be too large, an error will be shown.

No. Everything happens locally in your browser. Your files are never sent anywhere – privacy guaranteed.
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