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A Complete Optimization Pipeline for Spine2D JSON files

Flexible node-based architecture covering every aspect of Spine 2D optimization.

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Up to 35% File Size Reduction

Don't let heavy JSON files slow down your game loading times. re-polish significantly reduces data payload by eliminating redundancy and optimizing curve mathematics.
⚡ Faster Parsing Time
💾 Lower Memory Usage
🎮 Optimized for Mobile & Web

⚠️ Built for Spine 4.2

This tool is engineered specifically for the modern Spine 4.2 JSON format. We leverage the latest runtime features to ensure maximum compatibility and stability for your projects.
Note: Please ensure your project is exported using Spine 4.2.x.

Key Features

Flexible node-based architecture covering every aspect of Spine 2D optimization.

Modular Node System
Build custom optimization pipelines by connecting specialized nodes. Each node handles a specific task - from data parsing to compression.
Real-time Preview
See your changes instantly in the integrated Spine viewer. Compare before and after results side by side.
Atlas Optimization
Repack atlases with advanced algorithms. Remove unused regions, optimize packing efficiency, and reduce texture memory.
Curve Optimization
Reduce animation file sizes by optimizing bezier curves while maintaining visual quality.
Flexible Export
Export optimized files in various formats. Control output quality and compression settings.

A Complete Optimization Pipeline

Flexible node-based architecture covering every aspect of Spine 2D optimization.

Re-Key: Smart Keyframe Reduction

Automatically identify and remove redundant keyframes. The algorithm analyzes linear segments and static tracks, cleaning up your timeline while preserving the original motion integrity.

Drastically cleaner JSON files.

Re-Curve: Advanced Curve Fitting

Transform dense, baked keyframe sequences into smooth Bezier curves. Utilizing advanced algorithms (like Schneider), it reconstructs natural motion paths with minimal control points.

Smoother animations and reduced runtime calculation overhead.

Re-Pack: Intelligent Atlas Packing

Unpack and repack your texture atlases with higher efficiency. Features polygon-based packing and mesh cropping to eliminate wasted transparency and reduce texture memory footprint.

Save VRAM and reduce draw calls.

Re-Scale: Precision Skeleton Resizing

Rescale your entire skeleton data, including bones, attachments, and animations, by a specific factor. Perfect for porting assets between different resolutions or game engines.

Adapt assets without re-exporting from the source.

Simple, Transparent Pricing

Choose the plan that fits your needs. All plans include core optimization features.

Free

$0 forever

Perfect for trying out the editor

  • Basic Node Graph
  • JSON Viewer
  • Limited Optimizations
  • Community Support
Get Started

Plus

$5/month

For indie developers

  • All Free Features
  • Optimization toolkit covering keys, curves, and textures
  • Full node catalog is available on the Wiki page
  • Bake physics into keyframes
  • Clean baked keys into curves
  • Graph Presets
  • Priority Support
Subscribe on Patreon

Pro

Coming Soon

Advanced features in development

  • All Plus Features
  • Batch Processing (multiple files at once)
  • Spine versions: 4.3, 4.1, 4.0, 3.8, 3.7

We Value Your Feedback

Found a bug? Have a feature request for a new Node? Let us know.