Compression
Texture compression
WebP, JPEG, PNG, quality, and max resolution
Texture compression can save a lot of space. It can also make a good model look cheap very quickly. Watch labels, decals, logos, and transparent areas.
Open Advanced > Texture to control image compression.
Enable texture compression
When enabled, Convert3D re-encodes supported texture images.
Normal maps are skipped when their names include normal or nrm. Normal maps are not ordinary images. Compress them aggressively and lighting can start looking wrong.
Disable texture compression when:
- you need exact texture pixels
- fine labels, linework, or decals become blurry
- you plan to process textures in another tool
Format
| Format | Use when | Notes |
|---|---|---|
| WebP | You want a good default for web use. | Supports transparency and usually gives smaller files than PNG. |
| JPEG | Textures are fully opaque and file size matters most. | Does not support alpha. Transparent pixels become white. |
| PNG | You need lossless output or exact transparency. | The quality slider does not work like WebP or JPEG. Files may be larger. |
Quality
Quality controls lossy image compression for WebP and JPEG.
| Range | Use when |
|---|---|
90%-100% | Text, labels, decals, UI panels, or inspection assets. |
75%-85% | Most product models and web previews. |
50%-70% | Small files matter more than texture detail. |
If the file size barely changes, textures may already be small, the model may be geometry-heavy, or PNG may be preserving more data than expected.
Max Resolution
Max Resolution limits the longest side of each texture.
| Setting | Use when |
|---|---|
| No limit | You need to preserve source texture dimensions. |
| 512px | Small previews, thumbnails, or very small embedded models. |
| 1024px | Mobile-first sharing and small files. |
| 2048px | Balanced web display. |
| 4096px | Close inspection or high-quality product detail. |
Downscaling only applies when a texture is larger than the selected limit.
Common fixes
Textures are blurry
Increase Texture Quality and Max Resolution. For labels, decals, and line art, use PNG or high-quality WebP.
Transparent areas turned white
Use WebP or PNG. JPEG has no alpha channel, so Convert3D fills transparent pixels with white when writing JPEG textures.
The file is still large
If textures dominate the file size, lower Max Resolution or use WebP/JPEG. If geometry dominates, texture settings will not do much.