Help & Information

Learn about compression methods and settings to get the best results

Compression Methods

Choose between two industry-standard compression algorithms based on your use case. Each method has its strengths depending on your model type and target platform.

Draco

Google's open-source library for compressing 3D geometric meshes.

Best compression ratio (smallest files)
Widely supported in browsers
Great for static models
Ideal for web delivery

Does NOT compress animations

Meshopt

Meshoptimizer's GPU-friendly compression format.

Faster GPU decoding
Compresses animations & morph targets
Supports streaming
Better for interactive apps

Full animation support

Feature	Draco	Meshopt
Compression Ratio	Excellent	Good
Decode Speed	Average	Fast
Animation Support	No	Yes
Morph Targets	No	Yes
Best For	Static models, web delivery	Animated characters, games

Compression Levels

The compression level determines how aggressively your model is compressed. Higher compression means smaller files but may introduce subtle quality changes.

Level	Quality	File Size	Best For
Low	Maximum quality preserved	Larger files	When quality is critical (product visualization, CAD)
Medium	Balanced quality	Good reduction	Most use cases - recommended default
High	Minor quality trade-offs	Smallest files	When file size is critical (mobile, slow networks)

💡 Tip: Start with "Medium" compression. If you need smaller files, try "High" and compare the visual quality in a 3D viewer.

Texture Compression

Textures often make up 70-90% of a GLB file's size. Enabling texture compression converts images to WebP format, dramatically reducing file size while maintaining visual quality.

Setting	When to Use
OFF	Keep original textures (PNG/JPEG). Use when you need exact texture preservation.
ON	Convert to WebP. Recommended for 50-80% texture size reduction with minimal quality loss.

Texture Quality Settings

Quality	Description	Use Case
90%	Excellent - Nearly lossless	High-end visualization
80%	Good - Recommended balance	Most web applications
75%	Balanced - Good compression	Mobile apps, games
60-70%	Compressed - Visible artifacts possible	Low bandwidth situations
50%	High compression - Some quality loss	Thumbnails, previews

Texture Size (Resolution)

Reducing texture resolution is one of the most effective ways to reduce file size. Textures larger than needed waste bandwidth and VRAM.

Max Size	Typical Reduction	Best For
Original	No resize	When original resolution is required
4096px (4K)	Minimal if already 4K	High-end displays, close-up views
2048px (2K)	~75% reduction from 4K	Desktop web, most use cases
1024px (1K)	~93% reduction from 4K	Mobile, performance-critical apps
512px	~98% reduction from 4K	Distant objects, thumbnails, LODs

⚠️ Note: Texture resizing is permanent. If you need high-resolution textures later, keep your original file.

Smart Presets

When you select a compression method and level, the optional settings are automatically configured for optimal results. You can still customize them if needed.

Preset	Texture Compression	Quality	Max Size
* + Low	Off	90%	Original
* + Medium	On (WebP)	80%	2048px
* + High	On (WebP)	75%	1024px

🎯 Maximum Compression Recipe:

For the smallest file size (e.g., 150MB → ~20MB), use:
Draco + High + Textures ON + Quality 75% + Size 1024px