textureCompress

Optimizes images, optionally resizing or converting to JPEG, PNG, WebP, or AVIF formats.

Requires sharp, and is available only in Node.js environments.

Example:

import { textureCompress } from '@gltf-transform/functions';
import sharp from 'sharp';

// (A) Optimize without conversion.
await document.transform(
    textureCompress({encoder: sharp})
);

// (B) Optimize and convert images to WebP.
await document.transform(
    textureCompress({
        encoder: sharp,
        targetFormat: 'webp',
        slots: /^(?!normalTexture).*$/ // exclude normal maps
    })
);