Tiếng Việt
Jun
Open Decimify Online (free, no install) →
Polygon reduction is the problem 3D workflows hit every day — online mesh simplifiers fill this gap without requiring any install – game engines need a triangle budget, web 3D and AR load faster with fewer polygons, and slicers choke on dense scans. Decimify reduces polygon count in your browser — a free online 3D mesh simplifier — while keeping UV seams and material boundaries clean. Free for basic use; a free 3dshouse sign-in is required to use it — even on the free tier. Upgrade to Pro to remove the limit.
Decimify Online Mesh Simplifier Features
- Real-time slider – the whole LOD pyramid is computed once, then scrubbed instantly with no rebuild.
- Attributes stay intact – UV seams, normals, and material boundaries survive every reduction level. This works because the collapse cost is a quadric extended past XYZ into the UV channel, so a seam vertex carries a far higher merge penalty and is the last thing to go – that is why textures don’t tear at aggressive reduction the way they do in geometry-only decimators.
- GLB / STL – GLB keeps materials and textures; STL for 3D printing.
- Off the main thread – WebAssembly + a background worker keep the UI responsive on million-triangle models.
- Private by design – files are parsed in-browser; no upload; the free tier just needs a free 3dshouse account.
Install
Nothing to install – it runs in any modern browser. Sign in with your 3dshouse account to unlock Decimify Pro. One purchase covers both surfaces — the SketchUp plugin and the web app.
Requirements
- Any modern browser (Chrome, Edge, Firefox, Safari).
- WebAssembly support (standard on current browsers).
Supported formats
| Format | Materials | UVs | Notes |
|---|---|---|---|
| GLB (glTF) | Preserved | Preserved | Recommended. Single file with geometry, materials and textures. |
| STL | — | — | Geometry only – no UVs, no normals, no shared vertices. Best for 3D printing. |
For any other format, convert to GLB first using Blender (File → Export → glTF Binary).
Two real gotchas on the format edges: STL has no vertex sharing – every triangle stores its three corners independently – so a clean reduction often shrinks the file far more than the triangle count alone suggests, and re-welding on import is what lets the decimator actually collapse anything. And if a GLB won’t load, check whether it was exported with Draco mesh compression — Decimify’s loader has no Draco decoder built in, so any Draco-compressed GLB fails to load; re-export without Draco compression (a plain, uncompressed GLB) before uploading.
Typical uses
- Reducing a photogrammetry scan before 3D printing.
- Generating LODs for a Three.js or Babylon.js scene.
- Shaving file size off a glTF before uploading to Sketchfab or a model viewer.
- Hitting a polycount budget for a game asset without reopening Blender.
FAQ
What formats can I use?
Import GLB or STL; export GLB (with textures) or STL. Convert other formats to GLB in Blender first.
Is my model uploaded?
No – everything runs in your browser. No upload; the free tier just needs a free 3dshouse account.
Is there a SketchUp polygon reducer version?
Yes – the Decimify SketchUp plugin simplifies geometry in place while keeping groups, components, and soft edges.
Is my model uploaded to a server?
No. Files are parsed in your browser — no upload; a free 3dshouse account is required. The reduction runs on WebAssembly off the main thread, so the UI stays responsive even on million-triangle models.
