Pixel Art Upscaler Online
Enlarge pixel art sprites and retro game textures by exact integer scales (2× to 32×) with zero blur and sharp edges. 100% private.
How to Upscale Pixel Art without Blurring
Upload Sprite
Select your 16x16, 32x32, or 64x64 pixel art sprite or tileset.
Choose Multiplier
Pick an integer scale factor (such as 4x or 8x) to avoid distortion artifacts.
Select Algorithm
Use Nearest Neighbor for classic sharp pixels or Scale2x/EPX for smoothed retro edges, then download your PNG.
Understanding Pixel Art Scaling Algorithms
When displaying retro assets on modern 4K and Retina displays, choosing the right scaling method is key:
- Nearest Neighbor: The gold standard for preserving exact pixel aesthetics. Each original pixel is cloned into an exact NxN square block with 100% crisp color accuracy.
- Scale2x / AdvMAME2x: Originally created for arcade emulators (MAME), this algorithm detects adjacent color relationships to fill corners smoothly without introducing anti-aliased blur.
- EPX: Expands pixel resolution by analyzing 4-connected neighbors, ideal for organic character sprites.
Frequently Asked Questions
Does upscaling add blurry anti-aliasing?
Never. Standard image editors blur edges using linear interpolation. Our tool is purpose-built to preserve hard, clean pixel boundaries.
Does it support transparent backgrounds?
Yes. Alpha transparency channels are preserved perfectly across all integer scaling multipliers.
Can I upscale tilesets and sprite sheets?
Yes, since integer multipliers scale every tile evenly, your grid alignments remain 100% mathematically aligned.
🔎 Verify it yourself: nothing uploads
Open your browser DevTools (F12 → Network tab). Pixel art upscaling algorithms execute 100% locally in your browser.