Toon Boom Harmony plugins and extensions function as specialized add-ons that expand the software's core animation capabilities. Designed for technical directors, riggers, and professional animators, these tools automate repetitive tasks, enhance line quality, and integrate external assets into 2D pipelines. They bridge the gap between standard software features and the specific, high-efficiency needs of modern production studios.
Top Toon Boom Harmony Plugins
- Toon Boom Ember (2025 Add-on): A new AI-powered extension introduced with Harmony 25, Ember focuses on assisting rather than replacing artists. It offers tools for automatic script breakdowns and upscaling art resolution, allowing studios to accelerate pre-production and asset preparation phases without compromising creative control.
- Lazy Nezumi Pro: While technically a system-wide hook, this Windows-exclusive utility is essential for Harmony users seeking precise line work. It provides advanced weighted smoothing, pressure curve adjustments, and perspective rulers that often outperform Harmony's native stabilizer, particularly for tablet users on Windows 10 and 11.
- OpenHarmony: An open-source scripting framework that acts as a foundational library for developers and technical animators. It simplifies the creation of custom tools by wrapping Harmony's complex internal API into a more accessible structure, enabling the rapid development of studio-specific automation scripts.
Features and Capabilities
The functionality of these plugins varies significantly, ranging from interface enhancements to deep pipeline integration. Toon Boom Ember integrates directly into the Harmony 25 ecosystem, utilizing local AI processing to handle labor-intensive tasks like increasing the fidelity of bitmap assets or organizing production data from scripts. This aligns with the industry's shift towards assistive tools that respect the artist's hand.
Lazy Nezumi Pro offers a specialized "hook window" feature that attaches directly to the Harmony canvas. Its primary strength lies in its customizable physics-based processing, which cleans up jittery input from older tablet drivers or unsteady hands before the data ever reaches the brush tool. For technical users, OpenHarmony provides the architecture to build custom nodes and batch processors, effectively allowing studios to write their own "plugins" for scene management, palette operations, and rig controls.
System Requirements
Compatibility is a critical factor when selecting extensions for a production pipeline. The tools listed below are optimized for the following specifications:
- Operating System: Windows 10 and Windows 11 (64-bit builds required).
- Host Software: Toon Boom Harmony 24 or Harmony 25 (Premium recommended for full scripting support).
- Hardware: Minimum 16GB RAM recommended for Ember's AI processing; Wacom or compatible WinTab/Windows Ink tablets for Lazy Nezumi Pro.
Best Use Cases
Professional Studios: Large production teams benefit most from Toon Boom Ember and OpenHarmony. Ember reduces the manual labor involved in asset management, while OpenHarmony allows pipeline directors to deploy custom scripts that standardize rigging and compositing workflows across dozens of workstations.
Freelance Animators and Illustrators: Individual artists focusing on traditional paperless animation will find Lazy Nezumi Pro indispensable. It provides immediate visual improvement to line art and cleanup stages, making it a vital tool for those who rely on precise, hand-drawn aesthetics on Windows platforms.
