Sprite Atlas Tool

https://commanderfoo.github.io/sprite-atlas-tool/

A browser based sprite packing utility designed for game developers. This tool allows you to pack multiple individual images into a single optimized texture atlas and generates the necessary data for integration into various game engines.

Features

• Multiple Packing Algorithms: MaxRects, Shelf, Guillotine, Skyline, and Grid.
• Advanced Heuristics: Short Side, Long Side, Area, and Bottom-Left rules for MaxRects.
• Auto-Size & Auto-Trim: Support for Power of Two (PoT) and Tight trimming to minimize texture waste.
• Advanced Sorting: Organize assets by Width, Height, Max Side, or Aspect Ratio.
• Export Formats: Support for PNG, WebP, and JPEG images.
• Data Formats: JSON, Unity, and TexturePacker compatible exports.
• Visual Debugging: Toggleable overlays for sprite bounds, padding, and rotation indicators.
• User-Friendly UI: Dark theme, drag-and-drop support, real-time packing updates, and an interactive pan/zoom canvas.

Keyboard Shortcuts

• Ctrl + E: Export Atlas
• Ctrl + Z: Undo
• Ctrl + Y: Redo
• F: Fit Atlas to View
• G: Toggle Grid
• • / -: Zoom In / Out
• 0: Reset Zoom to 100%
• Delete: Remove Selected Assets
• Middle Mouse: Pan View

Performance Tips

• The MaxRects algorithm generally provides the highest packing density for varied sprite sizes.
• Use "Auto-Trim Atlas" if your game engine supports non-fixed texture sizes to save memory.
• Enable "Allow Rotation" to allow the packer to orient sprites for better fitment.

License

MIT License - See LICENSE file for details.