EasyMesh Batch Exporter
EasyMesh Batch Exporter
A professional-grade Blender addon that streamlines 3D asset workflows by batch exporting multiple meshes with automatic LOD generation, intelligent texture optimisation, and industry-standard format support, all whilst handling massive polygon counts without crashes.
What it does
Multi-Format Batch Export
- Export multiple selected meshes simultaneously
- Supports FBX, OBJ, glTF/GLB, USD, and STL formats
- Format-specific optimisations (Draco compression for glTF, embedded textures for GLB)
- Customisable file naming with prefixes and suffixes for organised asset libraries
Precision Transform & Coordinate Control
- Configure Forward and Up axes for different target applications (Unity, Unreal, etc.)
- Global scale adjustment with format-specific handling
- Units conversion: seamless switching between metres and centimetres
- Zero object location before export for consistent positioning
- Automatic transform application with memory-safe processing
Advanced Mesh Processing
- Modifier Control: Choose which modifiers to apply (None/Visible/Render) for performance vs. quality balance
- Triangulation: Multiple methods (Beauty, Fixed, Alternate, Shortest Diagonal) with normal preservation
- Smoothing: Format-specific smoothing options (Face, Edge, Off) for optimal results
- Memory Optimisation: Handles 2+ million polygon meshes without crashes
Automatic LOD Generation
- Creates up to 4 LOD levels using progressive decimation
- Each LOD built from the previous level (60% less memory usage)
- Preserves symmetry along X, Y, or Z axis during decimation
- Individual decimation ratios for each level (e.g., LOD1: 75%, LOD2: 50%)
Intelligent Texture Management
- Automatic Resizing: Textures scaled per LOD level (default: LOD1: 2K, LOD2: 1K, LOD3: 512px, LOD4: 256px)
- Format Preservation: Maintains PNG for alpha channels, JPEG for RGB, HDR for high dynamic range
- Normal Map Quality: Option to keep normal maps at higher resolution for visual quality
- Compression Control: Adjustable lossy compression quality (0-100%) for size optimisation
- Embed vs. External: Choose to embed textures in supported formats or save as external files
- Aspect Ratio Protection: Maintains proportions to prevent texture distortion
Export Workflow & Feedback
- Visual Indicators: Track recently exported objects with viewport colour coding
- Green: Exported within the last minute (fresh)
- Yellow: Exported within the last 5 minutes (stale)
- Recent Exports Panel: Interactive list of exported objects with one-click selection
- Memory Management: Automatic garbage collection for large mesh operations
Performance & Memory Optimisation
- Automatically optimises for large meshes (>500K polygons)
- Handles 2+ million polygon meshes without crashes
- Progressive cleanup every 3 modifiers during heavy operations
- Smart processing strategies based on mesh complexity
Common Use Cases
- Game Development: Asset pipelines with LODs for Unreal Engine, Unity (coordinate system presets)
- Architectural Visualisation: Batch export with consistent naming and scale conversion
- 3D Printing: STL export with precise scale control and unit conversion
- Asset Libraries: Organised exports with prefix/suffix naming and texture optimisation
- Performance Optimisation: Multiple LOD levels with progressive texture downscaling
The addon preserves your original files whilst creating optimised exports, giving you full control over quality vs. file size trade-offs across multiple industry-standard formats.
What's New
1.2.2 May 30th, 2025
🚀 Performance & Stability Update
Major Performance Improvement: Optimised Scaling for Large Meshes
Problem: Users reported crashes and extremely long export times when using scale values (especially scale: 100) with large meshes (1M+ polygons). The addon was applying scale transformations to all vertex data in memory before export, causing massive memory usage and potential crashes.
Solution:
- FBX, OBJ, STL formats: Scale is now passed directly to the export operators via
global_scaleparameter, avoiding memory-intensive vertex transformations - GLTF, USD formats: Scale is disabled for these formats as they don't support global scaling and would require vertex transformation
Changes:
Memory Optimisation:
- No longer applies scale transforms to mesh vertices for FBX, OBJ, STL
- Significantly reduces memory usage for large meshes
- Faster export times, especially with high scale values
Format-Specific Handling:
- FBX, OBJ, STL: Full scale support via export operator parameters
- GLTF, USD: Scale is ignored with warning message to prevent crashes
User Warnings:
- Clear logging when scale is ignored for GLTF/USD formats
- Users are advised to apply scale manually before export for these formats
Impact
- ✅ Prevents crashes when exporting large meshes with scale
- ✅ Significantly faster export times for scaled meshes
- ✅ Reduced memory usage during export
- ⚠️ GLTF and USD formats no longer support scale parameter (for stability)
Technical Details
- Modified
setup_export_object()to return scale factor without applying transforms - Updated
export_object()to pass scale to export operators - Added format-specific scale handling logic
- Improved memory management for large mesh operations
Bug Fix: Negative Axis Values for OBJ/STL/USD Export
Problem: When using negative axis values (e.g., "-Z" for forward or up axis), OBJ, STL, and USD exports would fail because these formats expect "NEGATIVE_Z" instead of "-Z".
Solution: Added automatic conversion of axis values for OBJ, STL, and USD formats:
- Converts "-X", "-Y", "-Z" to "NEGATIVE_X", "NEGATIVE_Y", "NEGATIVE_Z" respectively
- FBX format continues to use the original "-Z" format as expected
- No changes needed for positive axis values
Impact
- ✅ Fixed export failures when using negative axis orientations with OBJ/STL/USD
- ✅ Maintains compatibility with all export formats
- ✅ Seamless conversion happens automatically
This update prioritises stability and performance for users working with large meshes. If you need scaling for GLTF/USD formats, please apply the scale manually in Blender before export. I'd love to hear about your experience with the new features! Report issues or suggest improvements on GitHub. 🙏
it's helped me a lot
This plugin is very practical and has helped me resolve many issues when exporting files. Thank you for your thoughtful design during development. The plugin is already quite user-friendly, but it would be even more convenient if you could add features to delete all materials and set whether to apply modifiers
Thank you, it has sped up my model processing workflow.
I noticed an issue with the axis inversion—Blender seems to have changed the axis identifiers. They're no longer -X, -Y, -Z but now appear as NEGATIVE_X and so on.