Your files stay on your device

# Pixel-art upscaler

Make pixel art and sprites 2, 3, or 4 times bigger with sharp edges.

Drop your images here

or click to browse from your device
Select Files

Supports: JPG, JPEG, PNG, WEBP, AVIF, GIF, BMP, TIFF, JXL, QOI
How it worksEvery file is decoded locally, transformed ( HQX 2× pixel-art scale ), and re-encoded as PNG , output signature and dimensions are verified before a row counts as done. Animated inputs keep their first frame only (flagged on the row). HQX reads edges in YUV space and interpolates only inside a shape, so sprites stay sharp where a smoothing resampler would blur them. Sources up to 4096 px per side and 4,000,000 pixels. Larger art is out of this algorithm's league. Output is PNG with dimensions verified: no quality knob, nothing recompressed twice.Factor2 ×3 ×4 ×TransformDownload all (0)Clear queuePaste, drop, or type to begin. Everything stays on this device.

## More image tools

- [Resize images](/images/resize)
- [Convert images](/images/convert)
[All image tools](/images)

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Markdown version: https://nutter.tools/images/hqx/index.md
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