What is Pixel Refiner?

Pixel Refiner is a free online tool for optimizing AI-generated pixel art. It features anti-aliasing removal, background transparency, and automatic grid detection to create production-ready game assets.

Are images uploaded to a server?

No, all image processing is done locally within your browser. Your images are never sent to a server, ensuring complete privacy.

What image formats are supported?

We support common browser-compatible formats like PNG, JPEG, GIF, and WebP. The output is in PNG format, which supports transparency.

Yes, it is completely free to use. No registration is required.

Pixel Refiner | AI Pixel Art Optimizer & Background Remover

Input Image

Size: -

Drag & drop image here
or Click to select

Color Reduction

Reduction Mode ?

Color Count ?

Dithering Dither Strength ?

Outline

Style

Color

Grid Detection

Grid Detection Mode ?

Quantization Step ?

Sample Window ?

Force Width (px) ? Force Height (px) ? Fast Mode ?

Background Removal

Extraction Method ?

Background Color (RGB) ?

Color Tolerance ?

Pre-process Transparency ? Post-process Transparency ? Background Removal Scope ? Connectivity ? Max Noise Size (%) ?

Trimming

Auto Trim ? Make Square ?

Processing

Auto Process ?

Presets

Result

Size: -

Processed result will appear here

Pixel Refiner Features

Automatically clean up AI-generated pixel art

Remove anti-aliasing for crisp pixel art

One-click background transparency

Automatic grid detection for optimal pixel size

Fully browser-based, images are not uploaded to server

Completely free and no registration required

High-quality PNG download, supports up to 32x upscaling

Recommended For

Users who create pixel art with AI tools (Stable Diffusion, Midjourney, etc.)

Indie game developers needing sprite assets

People tired of manually removing anti-aliasing

Those wanting to automate background transparency for game assets