Optimize 3D assets for the web

Make models small and fast without wrecking the look. Always keep the original; write optimized output to a new file; report before/after sizes.

Step 0 — Inspect

npx @gltf-transform/cli inspect model.glb

Note: file size, mesh/primitive count, texture count + resolutions, draw call estimate, whether it already uses Draco/KTX2.

Step 1 — One-shot optimize (start here)

npx @gltf-transform/cli optimize model.glb model.opt.glb \
  --compress draco \
  --texture-compress ktx2

This prunes unused data, dedups, welds, instances, Draco-compresses geometry, and KTX2-compresses textures.