Nearest‑Neighbour is a simple interpolation method that copies the nearest original pixel when enlarging an image. It preserves sharp edges and blocky appearances, making it the best choice for pixel art, retro games sprites, and any graphic where you want to avoid blurring.

Typical upscalers (bilinear, bicubic, or AI‑based) add smoothing which ruins the crisp, grid‑based look of pixel art. They create muddy transitions between pixels. Our tool uses pure Nearest‑Neighbour to keep every square exactly as you intended.

No. Everything happens directly in your browser. Your image never leaves your device. We use the HTML5 Canvas API to process the scaling locally, ensuring total privacy and speed.

You can upload PNG, JPEG, GIF, and WebP files. For best results, use lossless formats like PNG or GIF. The maximum file size is 10 MB. Because the tool is optimized for pixel art, we recommend images under 2048×2048 pixels. Larger images may be refused or cause performance issues.

Currently the tool supports integer scale factors from 2x to 8x. Fractional scaling with Nearest‑Neighbour often causes uneven pixel sizes and distortion, which is why we stick to whole numbers for the cleanest result.

You can, but the result will look blocky and pixelated. This tool is specifically designed for pixel art. For photographs, we recommend tools that use bicubic or AI‑based upscaling.