Why convert PLY to GLB?
PLY is the default output of many scanners and photogrammetry tools. The files are often enormous — millions of vertices with per-vertex color but no PBR materials — and nothing on the web loads PLY directly.
GLB makes scan data viewable in browsers and AR, at a fraction of the size.
What Zlim optimizes
Zlim reads binary and ASCII PLY, preserves vertex colors, decimates over-dense scan meshes within a tolerance you control, quantizes attributes, and Draco-compresses the geometry. For raw scans this is frequently a 90%+ reduction before you lose any perceptible detail.
zlim optimize scan.ply -o scan.glb -p maximum # dense scan → lean GLBFAQ
Are vertex colors kept?
Yes. Per-vertex colors from scans and photogrammetry are carried through to the GLB.
My scan is hundreds of MB — can Zlim handle it?
Large meshes are supported up to your plan's file-size limit (250 MB on Pro, 1 GB on Studio and Enterprise). Decimation is where the biggest wins come from on scan data.
Convert PLY to GLB now
Start free — 25 optimizations a month. No card required.