Model Optimization

Model Optimization is an online geometry and structure optimization tool provided by iCraft. It significantly reduces model complexity and improves real-time rendering performance while preserving visual quality as much as possible.With Model Optimization, you can:

• Reduce triangle count
• Merge meshes
• Clean up redundant hierarchical structures
• Perform automatic decimation
• Correct scaling
• Unify materials and geometry structure
• Improve frame rate and loading speed
• Prepare models for deployment on the web, mobile, digital twin, and presentation scenes

This tool supports direct in-browser model processing with no additional software installation, and is completely free and public to all users.All optimization processes run locally in the user’s browser; model files are not uploaded to official servers, ensuring user data privacy and security. It is both convenient and reliable.

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Model Optimization Workflow

1

Import Model

Click the Import button or drag-and-drop to upload GLB/GLTF files. Once imported, the page displays a 3D preview and model structure information.

2

Review Performance Data

Focus on the following metrics to determine whether optimization is needed and whether bottlenecks stem from geometry or structure:

• Is the triangle count excessively high?
• Is the FPS low?
• Is the number of geometries too large?
• Are the draw call counts abnormal?
• Is memory usage too high?

3

Perform Optimization

The recommended order is:

1. Hierarchy Optimization: Clean up redundant empty nodes and merge meaningless groups for a cleaner structure.
2. Merge Meshes: Combine fragmented geometries to reduce draw calls and improve rendering efficiency.
3. Automatic Decimation: Intelligently reduce polygon count while preserving overall contours.
4. Scale Correction: Unify model scale to avoid abnormally large or small models.

4

Check Optimization Results

After optimization, the system updates the model preview in real time and refreshes performance metrics.At this stage, carefully verify:

Visual Integrity

Check for missing geometry, broken faces, local collapse, obvious aliasing, misaligned components, over-simplified details, abnormal materials, or flickering.

Performance Metrics

Compare pre- and post-optimization data in the bottom-left corner of the preview window:

• Reduced triangle count
• Fewer geometries
• Lower draw calls
• Higher FPS
• Lower memory usage

5

Export Model

Once finished, click Export in the top-right corner. You may enable Fast Compress Model during export, then download the optimized file locally.

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Practical Tips

• Start with hierarchy optimization + mesh merging, then use automatic decimation.
• Compare results during optimization by monitoring FPS, memory usage, and triangle count.
• For engineering models, prioritize structural cleanup.
• Optimize carefully; avoid excessive decimation on critical components.
• Always keep a backup of the original file.
• For extremely large models, perform basic simplification first before optimization or compression.