Online Tool Store
Pixel Art Upscaler
Upload a small pixel-art image and enlarge it using nearest-neighbor scaling so every pixel stays crisp instead of blurring, at 2x-8x sizes.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Sample sprite shown below — choose your own low-resolution image to replace it. Files never leave your browser.
Source ()
Upscaled ()
How it works
- Choose a low-resolution pixel art image — a small sample sprite is processed automatically so you see the effect immediately.
- Adjust the scale factor slider from 2× to 16×.
- The output canvas re-renders with image smoothing disabled, so each source pixel becomes a crisp block; download the result as a PNG.
Why nearest-neighbor scaling
Nearest-neighbor scaling assigns each output pixel the color of the single
nearest source pixel, with no blending — the opposite of bilinear/bicubic
scaling, which averages neighboring pixels to smooth the result. For pixel
art, that averaging is exactly what ruins the crisp, blocky look the artist
intended, so this tool sets imageSmoothingEnabled = false before
drawing the upscaled image.
FAQ
Why not just resize the image in any photo editor?
Most photo editors default to smooth (bilinear/bicubic) resizing, which blurs pixel art's hard edges into a fuzzy mess. This tool disables that smoothing on the canvas, so every source pixel is scaled into a crisp, sharp-edged block — the correct way to enlarge pixel art.
What scale factors are supported?
2× to 16×, in whole-number steps — whole numbers keep every source pixel mapping to a perfectly even block of output pixels, with no half-pixel blending at the edges.
Will this add detail to a low-resolution image?
No — it enlarges existing pixels cleanly without inventing new detail or smoothing. If you want an AI-upscaled result with invented detail for a photo, use a dedicated photo upscaler instead; this tool is specifically for preserving pixel art's exact blocky look at a larger size.
How we compare
| Feature | Online Tool Store | Resizing in a generic photo editor | AI photo upscaler |
|---|---|---|---|
| Keeps pixel edges crisp, not blurred | ✓ | ✗ | ✗ |
| No invented/hallucinated detail | ✓ | ✓ | ✗ |
| Free, no sign-up | ✓ | ✗ | ✗ |
A generic photo editor's default resize blurs pixel art; an AI upscaler invents detail that changes the art. This does the one correct thing for pixel art — clean, blocky nearest-neighbor scaling — free and instantly.