PixelScale Studio

PixelScale upscales pixel art sprites and tilesets without blurring — in batch, at speed, with the right algorithms.

Drop a folder of 500 sprites. Get them back at 2×, 4×, or 16× in seconds. No bilinear smearing. No color bleeding. No artefacts.

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Algorithms

Nearest Neighbor
Perfect pixel replication. Zero color changes. Zero blurring.
Gold standard for tilesets, UI elements and font sprites.

xBRZ 2× / 4× — Zenju, 2012
Advanced edge detection with superior alpha transparency handling.
No edge bleeding. Best choice for character sprites.

HQ2x / HQ4x — Maxim Stepin, 2003
Smooth anti-aliased curves in YUV color space.
Best for portraits and cutscene art.

Scale2x / Scale3x — Andrea Mazzoleni, 2001
Palette-safe. No new colors introduced. Fast and deterministic.
Ideal for tilesets and backgrounds.

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Quick Algorithm Guide

• Hero / character sprites → xBRZ 4×
• Enemy sprites → xBRZ 2×
• Tilesets / backgrounds → Nearest Neighbor 4×
• UI elements / HUD → Nearest Neighbor 2×
• Character portraits → HQ4x
• Steam capsule art → HQ4x 16×
• Aseprite 1.3.18 import → xBRZ 2× (PNG, alpha on)
• Godot 4.6 texture → xBRZ 2× or Nearest 4×
• Unity 6.1 sprite atlas → Nearest Neighbor 4×

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Features

• Batch mode — drop entire folders, process 500+ sprites at once
• Scale factors: 2× · 3× · 4× · 8× · 16×
• Export: PNG (lossless) and WebP (lossless)
• Alpha channel preservation — no edge bleeding
• 7 built-in presets: Game Export · Aseprite Compat · Godot 4.6 Atlas · Unity 6.1 Sprite · Steam Capsule Art · GameMaker 2024 · Quick Preview
• Before / After live preview with zoom
• Export history log — persistent across sessions
• 100% offline — no upload, no account, no telemetry

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Compatible With

Aseprite 1.3.18  ·  Godot 4.6  ·  Unity 6.1  ·  GameMaker 2024  ·  Tiled 1.11  ·  LibGDX  ·  Phaser 3  ·  LÖVE 12

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System Requirements

• Windows 10 / 11 (64-bit)
• macOS 12 Monterey or later — Apple Silicon + Intel (universal binary)
• RAM: 256 MB  ·  Storage: 30 MB  ·  No GPU required

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Free · No Limits

No file count limit. No watermarks. No subscription.
No account. No internet required. No telemetry. Ever.

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Source & Documentation

• GitHub: https://github.com/tunahan-codes/pixelscale

Bug reports and feature requests welcome on GitHub.